<?xml version="1.0" encoding="us-ascii"?>
<!--Generated by EDGARfilings PROfile 5.0.0.0 Broadridge-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:t1="http://xbrl.org/2005/xbrldt">
  <link:roleRef roleURI="http://firstcitizensbank.com/role/FairValueMeasurementsByBalanceSheetGroupingDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#FairValueMeasurementsByBalanceSheetGroupingDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/FairValueMeasurementsQuantitativeInformationDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#FairValueMeasurementsQuantitativeInformationDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/FairValueMeasurementsMeasuredOnRecurringAndNonrecurringBasisDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#FairValueMeasurementsMeasuredOnRecurringAndNonrecurringBasisDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/AccumulatedComprehensiveLossReclassificationDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#AccumulatedComprehensiveLossReclassificationDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/AccumulatedComprehensiveLossDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#AccumulatedComprehensiveLossDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/EmployeeBenefitPlansRestrictedStockPlanDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#EmployeeBenefitPlansRestrictedStockPlanDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/EmployeeBenefitPlansNoncontributoryDefinedBenefitPensionPlanDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#EmployeeBenefitPlansNoncontributoryDefinedBenefitPensionPlanDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RepurchaseAgreementsDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#RepurchaseAgreementsDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/GoodwillAndOtherIntangibleAssetsDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#GoodwillAndOtherIntangibleAssetsDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansForeclosedAssetsHeldForSaleDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansForeclosedAssetsHeldForSaleDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansAllowanceForLoanLossesByPortfolioSegmentDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansAllowanceForLoanLossesByPortfolioSegmentDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansAllowanceForLoanLossesDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansAllowanceForLoanLossesDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansTroubleDebtRestructuringDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansTroubleDebtRestructuringDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansPastDueDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansPastDueDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansCreditQualityIndicatorDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansCreditQualityIndicatorDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansImpairedFinancingReceivableDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansImpairedFinancingReceivableDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansPrimarySegmentsPortfolioAndAccretableYieldForPciLoansDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansPrimarySegmentsPortfolioAndAccretableYieldForPciLoansDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/InvestmentsDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#InvestmentsDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#EarningsPerShareDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RevenueRecognitionDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#RevenueRecognitionDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/BasisOfPresentationDetails" xlink:type="simple" xlink:href="czfs-20180930.xsd#BasisOfPresentationDetails" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/FairValueMeasurementsTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#FairValueMeasurementsTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/AccumulatedComprehensiveLossTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#AccumulatedComprehensiveLossTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/EmployeeBenefitPlansTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#EmployeeBenefitPlansTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RepurchaseAgreementsTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#RepurchaseAgreementsTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/GoodwillAndOtherIntangibleAssetsTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#GoodwillAndOtherIntangibleAssetsTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LoansTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#LoansTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/InvestmentsTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#InvestmentsTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/EarningsPerShareTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#EarningsPerShareTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RevenueRecognitionTables" xlink:type="simple" xlink:href="czfs-20180930.xsd#RevenueRecognitionTables" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RecentAccountingPronouncementsPolicies" xlink:type="simple" xlink:href="czfs-20180930.xsd#RecentAccountingPronouncementsPolicies" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RevenueRecognitionPolicies" xlink:type="simple" xlink:href="czfs-20180930.xsd#RevenueRecognitionPolicies" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/BasisOfPresentationPolicies" xlink:type="simple" xlink:href="czfs-20180930.xsd#BasisOfPresentationPolicies" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RecentAccountingPronouncements" xlink:type="simple" xlink:href="czfs-20180930.xsd#RecentAccountingPronouncements" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/LegalAndRegulatoryProceedings" xlink:type="simple" xlink:href="czfs-20180930.xsd#LegalAndRegulatoryProceedings" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/FairValueMeasurements" xlink:type="simple" xlink:href="czfs-20180930.xsd#FairValueMeasurements" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/AccumulatedComprehensiveLoss" xlink:type="simple" xlink:href="czfs-20180930.xsd#AccumulatedComprehensiveLoss" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/EmployeeBenefitPlans" xlink:type="simple" xlink:href="czfs-20180930.xsd#EmployeeBenefitPlans" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RepurchaseAgreements" xlink:type="simple" xlink:href="czfs-20180930.xsd#RepurchaseAgreements" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/GoodwillAndOtherIntangibleAssets" xlink:type="simple" xlink:href="czfs-20180930.xsd#GoodwillAndOtherIntangibleAssets" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/Loans" xlink:type="simple" xlink:href="czfs-20180930.xsd#Loans" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/Investments" xlink:type="simple" xlink:href="czfs-20180930.xsd#Investments" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/EarningsPerShare" xlink:type="simple" xlink:href="czfs-20180930.xsd#EarningsPerShare" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/RevenueRecognition" xlink:type="simple" xlink:href="czfs-20180930.xsd#RevenueRecognition" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/BasisOfPresentation" xlink:type="simple" xlink:href="czfs-20180930.xsd#BasisOfPresentation" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/ConsolidatedStatementOfCashFlowsUnaudited" xlink:type="simple" xlink:href="czfs-20180930.xsd#ConsolidatedStatementOfCashFlowsUnaudited" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/ConsolidatedStatementOfComprehensiveIncomeUnaudited" xlink:type="simple" xlink:href="czfs-20180930.xsd#ConsolidatedStatementOfComprehensiveIncomeUnaudited" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/ConsolidatedStatementOfIncomeUnaudited" xlink:type="simple" xlink:href="czfs-20180930.xsd#ConsolidatedStatementOfIncomeUnaudited" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/ConsolidatedBalanceSheetUnauditedParenthetical" xlink:type="simple" xlink:href="czfs-20180930.xsd#ConsolidatedBalanceSheetUnauditedParenthetical" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/ConsolidatedBalanceSheetUnaudited" xlink:type="simple" xlink:href="czfs-20180930.xsd#ConsolidatedBalanceSheetUnaudited" />
  <link:roleRef roleURI="http://firstcitizensbank.com/role/DocumentAndEntityInformation" xlink:type="simple" xlink:href="czfs-20180930.xsd#DocumentAndEntityInformation" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/DocumentAndEntityInformation" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/ConsolidatedBalanceSheetUnaudited" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/ConsolidatedBalanceSheetUnauditedParenthetical" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/ConsolidatedStatementOfIncomeUnaudited">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_NonInterestIncomesAbstract" xlink:label="NonInterestIncomesAbstract" xlink:title="NonInterestIncomesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="NonInterestIncomesAbstract" xlink:title="definition: StatementLineItems to NonInterestIncomesAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="RevenueFromContractWithCustomerExcludingAssessedTax" xlink:title="RevenueFromContractWithCustomerExcludingAssessedTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="StatementLineItems" xlink:to="RevenueFromContractWithCustomerExcludingAssessedTax" xlink:title="definition: StatementLineItems to RevenueFromContractWithCustomerExcludingAssessedTax" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="StatementLineItems" xlink:to="StatementTable" xlink:title="definition: StatementLineItems to StatementTable" order="3.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="ProductOrServiceAxis" xlink:title="ProductOrServiceAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="StatementTable" xlink:to="ProductOrServiceAxis" xlink:title="definition: StatementTable to ProductOrServiceAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="ProductsAndServicesDomain" xlink:title="ProductsAndServicesDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProductOrServiceAxis" xlink:to="ProductsAndServicesDomain" xlink:title="definition: ProductOrServiceAxis to ProductsAndServicesDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="ProductsAndServicesDomain_2" xlink:title="ProductsAndServicesDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProductOrServiceAxis" xlink:to="ProductsAndServicesDomain_2" xlink:title="definition: ProductOrServiceAxis to ProductsAndServicesDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ServiceChargesOnDepositAccountsMember" xlink:label="ServiceChargesOnDepositAccountsMember" xlink:title="ServiceChargesOnDepositAccountsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="ServiceChargesOnDepositAccountsMember" xlink:title="definition: ProductsAndServicesDomain to ServiceChargesOnDepositAccountsMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_TrustFeesMember" xlink:label="TrustFeesMember" xlink:title="TrustFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="TrustFeesMember" xlink:title="definition: ProductsAndServicesDomain to TrustFeesMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_BrokerageAndInsuranceMember" xlink:label="BrokerageAndInsuranceMember" xlink:title="BrokerageAndInsuranceMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="BrokerageAndInsuranceMember" xlink:title="definition: ProductsAndServicesDomain to BrokerageAndInsuranceMember" order="3.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/ConsolidatedStatementOfComprehensiveIncomeUnaudited" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/ConsolidatedStatementOfCashFlowsUnaudited" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/BasisOfPresentation" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RevenueRecognition" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/EarningsPerShare" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/Investments" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/Loans" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/GoodwillAndOtherIntangibleAssets" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RepurchaseAgreements" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/EmployeeBenefitPlans" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/AccumulatedComprehensiveLoss" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/FairValueMeasurements" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LegalAndRegulatoryProceedings" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RecentAccountingPronouncements" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/BasisOfPresentationPolicies" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RevenueRecognitionPolicies" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RecentAccountingPronouncementsPolicies" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RevenueRecognitionTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/EarningsPerShareTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/InvestmentsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/GoodwillAndOtherIntangibleAssetsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RepurchaseAgreementsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/EmployeeBenefitPlansTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/AccumulatedComprehensiveLossTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/FairValueMeasurementsTables" />
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/BasisOfPresentationDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:title="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:label="NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:title="NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:title="definition: NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems to NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:title="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:title="definition: NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems to CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="LaborAndRelatedExpense" xlink:title="LaborAndRelatedExpense" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="LaborAndRelatedExpense" xlink:title="definition: NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems to LaborAndRelatedExpense" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoninterestExpense" xlink:label="OtherNoninterestExpense" xlink:title="OtherNoninterestExpense" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="OtherNoninterestExpense" xlink:title="definition: NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems to OtherNoninterestExpense" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:title="NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:title="definition: NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems to NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" order="5.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="AdjustmentsForNewAccountingPronouncementsAxis" xlink:title="AdjustmentsForNewAccountingPronouncementsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="AdjustmentsForNewAccountingPronouncementsAxis" xlink:title="definition: NewAccountingPronouncementsOrChangeInAccountingPrincipleTable to AdjustmentsForNewAccountingPronouncementsAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="TypeOfAdoptionMember" xlink:title="TypeOfAdoptionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="TypeOfAdoptionMember" xlink:title="definition: AdjustmentsForNewAccountingPronouncementsAxis to TypeOfAdoptionMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="TypeOfAdoptionMember_2" xlink:title="TypeOfAdoptionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="TypeOfAdoptionMember_2" xlink:title="definition: AdjustmentsForNewAccountingPronouncementsAxis to TypeOfAdoptionMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201601Member" xlink:label="AccountingStandardsUpdate201601Member" xlink:title="AccountingStandardsUpdate201601Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypeOfAdoptionMember" xlink:to="AccountingStandardsUpdate201601Member" xlink:title="definition: TypeOfAdoptionMember to AccountingStandardsUpdate201601Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201707Member" xlink:label="AccountingStandardsUpdate201707Member" xlink:title="AccountingStandardsUpdate201707Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TypeOfAdoptionMember" xlink:to="AccountingStandardsUpdate201707Member" xlink:title="definition: TypeOfAdoptionMember to AccountingStandardsUpdate201707Member" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="StatementEquityComponentsAxis" xlink:title="definition: NewAccountingPronouncementsOrChangeInAccountingPrincipleTable to StatementEquityComponentsAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain_2" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain_2" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="AccumulatedOtherComprehensiveIncomeMember" xlink:title="AccumulatedOtherComprehensiveIncomeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AccumulatedOtherComprehensiveIncomeMember" xlink:title="definition: EquityComponentDomain to AccumulatedOtherComprehensiveIncomeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="RetainedEarningsMember" xlink:title="RetainedEarningsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="RetainedEarningsMember" xlink:title="definition: EquityComponentDomain to RetainedEarningsMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RevenueRecognitionDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="DisaggregationOfRevenueLineItems" xlink:title="DisaggregationOfRevenueLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ConcentrationRiskAbstract" xlink:label="ConcentrationRiskAbstract" xlink:title="ConcentrationRiskAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DisaggregationOfRevenueLineItems" xlink:to="ConcentrationRiskAbstract" xlink:title="definition: DisaggregationOfRevenueLineItems to ConcentrationRiskAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisaggregationOfRevenueAbstract" xlink:label="DisaggregationOfRevenueAbstract" xlink:title="DisaggregationOfRevenueAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DisaggregationOfRevenueLineItems" xlink:to="DisaggregationOfRevenueAbstract" xlink:title="definition: DisaggregationOfRevenueLineItems to DisaggregationOfRevenueAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="RevenueFromContractWithCustomerExcludingAssessedTax" xlink:title="RevenueFromContractWithCustomerExcludingAssessedTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DisaggregationOfRevenueLineItems" xlink:to="RevenueFromContractWithCustomerExcludingAssessedTax" xlink:title="definition: DisaggregationOfRevenueLineItems to RevenueFromContractWithCustomerExcludingAssessedTax" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="ConcentrationRiskPercentage1" xlink:title="ConcentrationRiskPercentage1" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DisaggregationOfRevenueLineItems" xlink:to="ConcentrationRiskPercentage1" xlink:title="definition: DisaggregationOfRevenueLineItems to ConcentrationRiskPercentage1" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="DisaggregationOfRevenueTable" xlink:title="DisaggregationOfRevenueTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="DisaggregationOfRevenueLineItems" xlink:to="DisaggregationOfRevenueTable" xlink:title="definition: DisaggregationOfRevenueLineItems to DisaggregationOfRevenueTable" order="5.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="ConcentrationRiskByBenchmarkAxis" xlink:title="ConcentrationRiskByBenchmarkAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DisaggregationOfRevenueTable" xlink:to="ConcentrationRiskByBenchmarkAxis" xlink:title="definition: DisaggregationOfRevenueTable to ConcentrationRiskByBenchmarkAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="ConcentrationRiskBenchmarkDomain" xlink:title="ConcentrationRiskBenchmarkDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ConcentrationRiskByBenchmarkAxis" xlink:to="ConcentrationRiskBenchmarkDomain" xlink:title="definition: ConcentrationRiskByBenchmarkAxis to ConcentrationRiskBenchmarkDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="ConcentrationRiskBenchmarkDomain_2" xlink:title="ConcentrationRiskBenchmarkDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ConcentrationRiskByBenchmarkAxis" xlink:to="ConcentrationRiskBenchmarkDomain_2" xlink:title="definition: ConcentrationRiskByBenchmarkAxis to ConcentrationRiskBenchmarkDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SalesRevenueNetMember" xlink:label="SalesRevenueNetMember" xlink:title="SalesRevenueNetMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ConcentrationRiskBenchmarkDomain" xlink:to="SalesRevenueNetMember" xlink:title="definition: ConcentrationRiskBenchmarkDomain to SalesRevenueNetMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="ConcentrationRiskByTypeAxis" xlink:title="ConcentrationRiskByTypeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DisaggregationOfRevenueTable" xlink:to="ConcentrationRiskByTypeAxis" xlink:title="definition: DisaggregationOfRevenueTable to ConcentrationRiskByTypeAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="ConcentrationRiskTypeDomain" xlink:title="ConcentrationRiskTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ConcentrationRiskByTypeAxis" xlink:to="ConcentrationRiskTypeDomain" xlink:title="definition: ConcentrationRiskByTypeAxis to ConcentrationRiskTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="ConcentrationRiskTypeDomain_2" xlink:title="ConcentrationRiskTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ConcentrationRiskByTypeAxis" xlink:to="ConcentrationRiskTypeDomain_2" xlink:title="definition: ConcentrationRiskByTypeAxis to ConcentrationRiskTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductConcentrationRiskMember" xlink:label="ProductConcentrationRiskMember" xlink:title="ProductConcentrationRiskMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ConcentrationRiskTypeDomain" xlink:to="ProductConcentrationRiskMember" xlink:title="definition: ConcentrationRiskTypeDomain to ProductConcentrationRiskMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="ProductOrServiceAxis" xlink:title="ProductOrServiceAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="DisaggregationOfRevenueTable" xlink:to="ProductOrServiceAxis" xlink:title="definition: DisaggregationOfRevenueTable to ProductOrServiceAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="ProductsAndServicesDomain" xlink:title="ProductsAndServicesDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProductOrServiceAxis" xlink:to="ProductsAndServicesDomain" xlink:title="definition: ProductOrServiceAxis to ProductsAndServicesDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="ProductsAndServicesDomain_2" xlink:title="ProductsAndServicesDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProductOrServiceAxis" xlink:to="ProductsAndServicesDomain_2" xlink:title="definition: ProductOrServiceAxis to ProductsAndServicesDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ProductsAndServicesNotWithinScopeOfASC606Member" xlink:label="ProductsAndServicesNotWithinScopeOfASC606Member" xlink:title="ProductsAndServicesNotWithinScopeOfASC606Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="ProductsAndServicesNotWithinScopeOfASC606Member" xlink:title="definition: ProductsAndServicesDomain to ProductsAndServicesNotWithinScopeOfASC606Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ServiceMember" xlink:label="ServiceMember" xlink:title="ServiceMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="ServiceMember" xlink:title="definition: ProductsAndServicesDomain to ServiceMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_TrustFeesMember" xlink:label="TrustFeesMember" xlink:title="TrustFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="TrustFeesMember" xlink:title="definition: ProductsAndServicesDomain to TrustFeesMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_BrokerageAndInsuranceMember" xlink:label="BrokerageAndInsuranceMember" xlink:title="BrokerageAndInsuranceMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="BrokerageAndInsuranceMember" xlink:title="definition: ProductsAndServicesDomain to BrokerageAndInsuranceMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancialServiceOtherMember" xlink:label="FinancialServiceOtherMember" xlink:title="FinancialServiceOtherMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ProductsAndServicesDomain" xlink:to="FinancialServiceOtherMember" xlink:title="definition: ProductsAndServicesDomain to FinancialServiceOtherMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OverdraftFeesMember" xlink:label="OverdraftFeesMember" xlink:title="OverdraftFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ServiceMember" xlink:to="OverdraftFeesMember" xlink:title="definition: ServiceMember to OverdraftFeesMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_StatementFeesMember" xlink:label="StatementFeesMember" xlink:title="StatementFeesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ServiceMember" xlink:to="StatementFeesMember" xlink:title="definition: ServiceMember to StatementFeesMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_InterchangeRevenueMember" xlink:label="InterchangeRevenueMember" xlink:title="InterchangeRevenueMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ServiceMember" xlink:to="InterchangeRevenueMember" xlink:title="definition: ServiceMember to InterchangeRevenueMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AutomatedTellerMachineIncomeMember" xlink:label="AutomatedTellerMachineIncomeMember" xlink:title="AutomatedTellerMachineIncomeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ServiceMember" xlink:to="AutomatedTellerMachineIncomeMember" xlink:title="definition: ServiceMember to AutomatedTellerMachineIncomeMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ServiceChargesOnDepositAccountsOtherMember" xlink:label="ServiceChargesOnDepositAccountsOtherMember" xlink:title="ServiceChargesOnDepositAccountsOtherMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ServiceMember" xlink:to="ServiceChargesOnDepositAccountsOtherMember" xlink:title="definition: ServiceMember to ServiceChargesOnDepositAccountsOtherMember" order="5.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/EarningsPerShareDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AntidilutiveSecuritiesAbstract" xlink:label="AntidilutiveSecuritiesAbstract" xlink:title="AntidilutiveSecuritiesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="AntidilutiveSecuritiesAbstract" xlink:title="definition: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to AntidilutiveSecuritiesAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="definition: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ShareBasedPaymentAwardFairValueAssumptionsExercisePrice" xlink:label="ShareBasedPaymentAwardFairValueAssumptionsExercisePrice" xlink:title="ShareBasedPaymentAwardFairValueAssumptionsExercisePrice" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="ShareBasedPaymentAwardFairValueAssumptionsExercisePrice" xlink:title="definition: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to ShareBasedPaymentAwardFairValueAssumptionsExercisePrice" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:title="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:title="definition: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems to ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" order="4.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:to="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:title="definition: ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable to AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="AntidilutiveSecuritiesNameDomain" xlink:title="AntidilutiveSecuritiesNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="AntidilutiveSecuritiesNameDomain" xlink:title="definition: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis to AntidilutiveSecuritiesNameDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="AntidilutiveSecuritiesNameDomain_2" xlink:title="AntidilutiveSecuritiesNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="AntidilutiveSecuritiesNameDomain_2" xlink:title="definition: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis to AntidilutiveSecuritiesNameDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="RestrictedStockMember" xlink:title="RestrictedStockMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AntidilutiveSecuritiesNameDomain" xlink:to="RestrictedStockMember" xlink:title="definition: AntidilutiveSecuritiesNameDomain to RestrictedStockMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:to="RangeAxis" xlink:title="definition: ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable to RangeAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RangeAxis" xlink:to="RangeMember" xlink:title="definition: RangeAxis to RangeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember_2" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RangeAxis" xlink:to="RangeMember_2" xlink:title="definition: RangeAxis to RangeMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MinimumMember" xlink:title="definition: RangeMember to MinimumMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MaximumMember" xlink:title="definition: RangeMember to MaximumMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/InvestmentsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:title="ScheduleOfAvailableForSaleSecuritiesLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract" xlink:label="AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract" xlink:title="AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AvailableForSaleSecuritiesEquitySecuritiesAbstract" xlink:label="AvailableForSaleSecuritiesEquitySecuritiesAbstract" xlink:title="AvailableForSaleSecuritiesEquitySecuritiesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesEquitySecuritiesAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesEquitySecuritiesAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_SecuritiesAvailableForSaleAbstract" xlink:label="SecuritiesAvailableForSaleAbstract" xlink:title="SecuritiesAvailableForSaleAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="SecuritiesAvailableForSaleAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to SecuritiesAvailableForSaleAbstract" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1" xlink:label="AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1" xlink:title="AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AvailableForSaleDebtSecuritiesContinuousUnrealizedLossPositionFairValueAndUnrealizedLossesAbstract" xlink:label="AvailableForSaleDebtSecuritiesContinuousUnrealizedLossPositionFairValueAndUnrealizedLossesAbstract" xlink:title="AvailableForSaleDebtSecuritiesContinuousUnrealizedLossPositionFairValueAndUnrealizedLossesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleDebtSecuritiesContinuousUnrealizedLossPositionFairValueAndUnrealizedLossesAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleDebtSecuritiesContinuousUnrealizedLossPositionFairValueAndUnrealizedLossesAbstract" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:label="ProceedsFromSaleOfAvailableForSaleSecurities" xlink:title="ProceedsFromSaleOfAvailableForSaleSecurities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="ProceedsFromSaleOfAvailableForSaleSecurities" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to ProceedsFromSaleOfAvailableForSaleSecurities" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossAbstract" xlink:label="AvailableForSaleSecuritiesGrossRealizedGainLossAbstract" xlink:title="AvailableForSaleSecuritiesGrossRealizedGainLossAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesGrossRealizedGainLossAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesGrossRealizedGainLossAbstract" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesFvNiGainLossAbstract" xlink:label="EquitySecuritiesFvNiGainLossAbstract" xlink:title="EquitySecuritiesFvNiGainLossAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="EquitySecuritiesFvNiGainLossAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to EquitySecuritiesFvNiGainLossAbstract" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged" xlink:label="PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged" xlink:title="PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" order="15.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" order="16.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="AvailableForSaleSecuritiesDebtSecurities" xlink:title="AvailableForSaleSecuritiesDebtSecurities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtSecurities" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtSecurities" order="17.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" order="18.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" order="19.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" order="20.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" order="21.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:label="AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:title="AvailableForSaleDebtSecuritiesAmortizedCostBasis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleDebtSecuritiesAmortizedCostBasis" order="22.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesFvNiGainLoss" xlink:label="EquitySecuritiesFvNiGainLoss" xlink:title="EquitySecuritiesFvNiGainLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="EquitySecuritiesFvNiGainLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to EquitySecuritiesFvNiGainLoss" order="23.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesFvNiRealizedGainLoss" xlink:label="EquitySecuritiesFvNiRealizedGainLoss" xlink:title="EquitySecuritiesFvNiRealizedGainLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="EquitySecuritiesFvNiRealizedGainLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to EquitySecuritiesFvNiRealizedGainLoss" order="24.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss" xlink:label="EquitySecuritiesFvNiUnrealizedGainLoss" xlink:title="EquitySecuritiesFvNiUnrealizedGainLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="EquitySecuritiesFvNiUnrealizedGainLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to EquitySecuritiesFvNiUnrealizedGainLoss" order="25.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGain" xlink:label="DebtSecuritiesAvailableForSaleRealizedGain" xlink:title="DebtSecuritiesAvailableForSaleRealizedGain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleRealizedGain" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleRealizedGain" order="26.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss" xlink:label="DebtSecuritiesAvailableForSaleRealizedLoss" xlink:title="DebtSecuritiesAvailableForSaleRealizedLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleRealizedLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleRealizedLoss" order="27.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleGainLoss" xlink:label="DebtSecuritiesAvailableForSaleGainLoss" xlink:title="DebtSecuritiesAvailableForSaleGainLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleGainLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleGainLoss" order="28.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" order="29.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" order="30.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" order="31.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" order="32.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" order="33.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" order="34.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:label="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:title="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" order="35.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:label="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:title="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger" order="36.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition" xlink:label="DebtSecuritiesAvailableForSaleUnrealizedLossPosition" xlink:title="DebtSecuritiesAvailableForSaleUnrealizedLossPosition" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleUnrealizedLossPosition" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleUnrealizedLossPosition" order="37.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:label="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:title="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" order="38.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:label="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:title="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" order="39.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss" xlink:label="DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss" xlink:title="DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss" order="40.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="AvailableForSaleSecuritiesAmortizedCost" xlink:title="AvailableForSaleSecuritiesAmortizedCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesAmortizedCost" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesAmortizedCost" order="41.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" order="42.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" order="43.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="AvailableForSaleSecurities" xlink:title="AvailableForSaleSecurities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecurities" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecurities" order="44.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis" xlink:label="AvailableForSaleEquitySecuritiesAmortizedCostBasis" xlink:title="AvailableForSaleEquitySecuritiesAmortizedCostBasis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleEquitySecuritiesAmortizedCostBasis" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleEquitySecuritiesAmortizedCostBasis" order="45.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax" order="46.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax" order="47.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesEquitySecurities" xlink:label="AvailableForSaleSecuritiesEquitySecurities" xlink:title="AvailableForSaleSecuritiesEquitySecurities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleSecuritiesEquitySecurities" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleSecuritiesEquitySecurities" order="48.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" order="49.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" order="50.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="ScheduleOfAvailableForSaleSecuritiesTable" xlink:title="ScheduleOfAvailableForSaleSecuritiesTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:to="ScheduleOfAvailableForSaleSecuritiesTable" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesLineItems to ScheduleOfAvailableForSaleSecuritiesTable" order="51.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="FinancialInstrumentAxis" xlink:title="FinancialInstrumentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfAvailableForSaleSecuritiesTable" xlink:to="FinancialInstrumentAxis" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesTable to FinancialInstrumentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:title="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancialInstrumentAxis" xlink:to="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:title="definition: FinancialInstrumentAxis to TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2" xlink:title="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancialInstrumentAxis" xlink:to="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2" xlink:title="definition: FinancialInstrumentAxis to TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="USGovernmentAgenciesDebtSecuritiesMember" xlink:title="USGovernmentAgenciesDebtSecuritiesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="USGovernmentAgenciesDebtSecuritiesMember" xlink:title="definition: TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to USGovernmentAgenciesDebtSecuritiesMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USTreasurySecuritiesMember" xlink:label="USTreasurySecuritiesMember" xlink:title="USTreasurySecuritiesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="USTreasurySecuritiesMember" xlink:title="definition: TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to USTreasurySecuritiesMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="USStatesAndPoliticalSubdivisionsMember" xlink:title="USStatesAndPoliticalSubdivisionsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="USStatesAndPoliticalSubdivisionsMember" xlink:title="definition: TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to USStatesAndPoliticalSubdivisionsMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="CorporateDebtSecuritiesMember" xlink:title="CorporateDebtSecuritiesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="CorporateDebtSecuritiesMember" xlink:title="definition: TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to CorporateDebtSecuritiesMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" xlink:label="MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" xlink:title="MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" xlink:title="definition: TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="EquitySecuritiesMember" xlink:title="EquitySecuritiesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="EquitySecuritiesMember" xlink:title="definition: TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to EquitySecuritiesMember" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfAvailableForSaleSecuritiesTable" xlink:to="RangeAxis" xlink:title="definition: ScheduleOfAvailableForSaleSecuritiesTable to RangeAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RangeAxis" xlink:to="RangeMember" xlink:title="definition: RangeAxis to RangeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember_2" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RangeAxis" xlink:to="RangeMember_2" xlink:title="definition: RangeAxis to RangeMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MinimumMember" xlink:title="definition: RangeMember to MinimumMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansPrimarySegmentsPortfolioAndAccretableYieldForPciLoansDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAbstract" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAbstract" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAbstract" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodTable" xlink:label="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodTable" xlink:title="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems" xlink:to="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodTable" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodLineItems to CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodTable" order="8.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="CounterpartyNameAxis" xlink:title="CounterpartyNameAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodTable" xlink:to="CounterpartyNameAxis" xlink:title="definition: CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodTable to CounterpartyNameAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="RepurchaseAgreementCounterpartyNameDomain" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="CounterpartyNameAxis" xlink:to="RepurchaseAgreementCounterpartyNameDomain" xlink:title="definition: CounterpartyNameAxis to RepurchaseAgreementCounterpartyNameDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="RepurchaseAgreementCounterpartyNameDomain_2" xlink:title="RepurchaseAgreementCounterpartyNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="CounterpartyNameAxis" xlink:to="RepurchaseAgreementCounterpartyNameDomain_2" xlink:title="definition: CounterpartyNameAxis to RepurchaseAgreementCounterpartyNameDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FirstNationalBankOfFredericksburgMember" xlink:label="FirstNationalBankOfFredericksburgMember" xlink:title="FirstNationalBankOfFredericksburgMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RepurchaseAgreementCounterpartyNameDomain" xlink:to="FirstNationalBankOfFredericksburgMember" xlink:title="definition: RepurchaseAgreementCounterpartyNameDomain to FirstNationalBankOfFredericksburgMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems" xlink:label="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:title="FinancingReceivableAllowanceForCreditLossesLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_SegmentsOfLoanPortfolioAndAllowanceForLoanLossesAbstract" xlink:label="SegmentsOfLoanPortfolioAndAllowanceForLoanLossesAbstract" xlink:title="SegmentsOfLoanPortfolioAndAllowanceForLoanLossesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="SegmentsOfLoanPortfolioAndAllowanceForLoanLossesAbstract" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to SegmentsOfLoanPortfolioAndAllowanceForLoanLossesAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_PeriodOfMortgageOnRealEstate" xlink:label="PeriodOfMortgageOnRealEstate" xlink:title="PeriodOfMortgageOnRealEstate" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="PeriodOfMortgageOnRealEstate" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to PeriodOfMortgageOnRealEstate" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_NumberOfDaysPastDueForLoanToBeConsideredImpaired" xlink:label="NumberOfDaysPastDueForLoanToBeConsideredImpaired" xlink:title="NumberOfDaysPastDueForLoanToBeConsideredImpaired" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="NumberOfDaysPastDueForLoanToBeConsideredImpaired" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to NumberOfDaysPastDueForLoanToBeConsideredImpaired" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:label="LoansAndLeasesReceivableGrossCarryingAmount" xlink:title="LoansAndLeasesReceivableGrossCarryingAmount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="LoansAndLeasesReceivableGrossCarryingAmount" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to LoansAndLeasesReceivableGrossCarryingAmount" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment" xlink:label="FinancingReceivableIndividuallyEvaluatedForImpairment" xlink:title="FinancingReceivableIndividuallyEvaluatedForImpairment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableIndividuallyEvaluatedForImpairment" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableIndividuallyEvaluatedForImpairment" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableLoansAcquiredWithDeterioratedCreditQuality" xlink:label="FinancingReceivableLoansAcquiredWithDeterioratedCreditQuality" xlink:title="FinancingReceivableLoansAcquiredWithDeterioratedCreditQuality" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableLoansAcquiredWithDeterioratedCreditQuality" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableLoansAcquiredWithDeterioratedCreditQuality" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment" xlink:label="FinancingReceivableCollectivelyEvaluatedForImpairment" xlink:title="FinancingReceivableCollectivelyEvaluatedForImpairment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableCollectivelyEvaluatedForImpairment" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableCollectivelyEvaluatedForImpairment" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="LoansAndLeasesReceivableAllowance" xlink:title="LoansAndLeasesReceivableAllowance" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="LoansAndLeasesReceivableAllowance" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to LoansAndLeasesReceivableAllowance" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:label="FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:title="FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_LoansAndLeasesReceivableAllowanceRelatedToLoansAcquiredWithDeterioratedCreditQuality" xlink:label="LoansAndLeasesReceivableAllowanceRelatedToLoansAcquiredWithDeterioratedCreditQuality" xlink:title="LoansAndLeasesReceivableAllowanceRelatedToLoansAcquiredWithDeterioratedCreditQuality" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="LoansAndLeasesReceivableAllowanceRelatedToLoansAcquiredWithDeterioratedCreditQuality" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to LoansAndLeasesReceivableAllowanceRelatedToLoansAcquiredWithDeterioratedCreditQuality" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:label="FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:title="FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="LoansAndLeasesReceivableNetReportedAmount" xlink:title="LoansAndLeasesReceivableNetReportedAmount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="LoansAndLeasesReceivableNetReportedAmount" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to LoansAndLeasesReceivableNetReportedAmount" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_LoansAndLeasesReceivableNetReportedAmountRelatedToIndividuallyEvaluatedForImpairment" xlink:label="LoansAndLeasesReceivableNetReportedAmountRelatedToIndividuallyEvaluatedForImpairment" xlink:title="LoansAndLeasesReceivableNetReportedAmountRelatedToIndividuallyEvaluatedForImpairment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="LoansAndLeasesReceivableNetReportedAmountRelatedToIndividuallyEvaluatedForImpairment" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to LoansAndLeasesReceivableNetReportedAmountRelatedToIndividuallyEvaluatedForImpairment" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_LoansAndLeasesReceivableNetReportedAmountRelatedToLoansAcquiredWithDeterioratedCreditQuality" xlink:label="LoansAndLeasesReceivableNetReportedAmountRelatedToLoansAcquiredWithDeterioratedCreditQuality" xlink:title="LoansAndLeasesReceivableNetReportedAmountRelatedToLoansAcquiredWithDeterioratedCreditQuality" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="LoansAndLeasesReceivableNetReportedAmountRelatedToLoansAcquiredWithDeterioratedCreditQuality" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to LoansAndLeasesReceivableNetReportedAmountRelatedToLoansAcquiredWithDeterioratedCreditQuality" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_LoansAndLeasesReceivableNetReportedAmountRelatedToCollectivelyEvaluatedForImpairment" xlink:label="LoansAndLeasesReceivableNetReportedAmountRelatedToCollectivelyEvaluatedForImpairment" xlink:title="LoansAndLeasesReceivableNetReportedAmountRelatedToCollectivelyEvaluatedForImpairment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="LoansAndLeasesReceivableNetReportedAmountRelatedToCollectivelyEvaluatedForImpairment" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to LoansAndLeasesReceivableNetReportedAmountRelatedToCollectivelyEvaluatedForImpairment" order="15.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:label="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:title="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" order="16.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to FinancingReceivablePortfolioSegmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_RealEstateLoansMember" xlink:label="RealEstateLoansMember" xlink:title="RealEstateLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="RealEstateLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to RealEstateLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsumerPortfolioSegmentMember" xlink:label="ConsumerPortfolioSegmentMember" xlink:title="ConsumerPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="ConsumerPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to ConsumerPortfolioSegmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember" xlink:label="CommercialPortfolioSegmentMember" xlink:title="CommercialPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="CommercialPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to CommercialPortfolioSegmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherAgriculturalLoansMember" xlink:label="OtherAgriculturalLoansMember" xlink:title="OtherAgriculturalLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="OtherAgriculturalLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to OtherAgriculturalLoansMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_StateAndPoliticalSubdivisionLoansMember" xlink:label="StateAndPoliticalSubdivisionLoansMember" xlink:title="StateAndPoliticalSubdivisionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="StateAndPoliticalSubdivisionLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to StateAndPoliticalSubdivisionLoansMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="ResidentialRealEstateMember" xlink:title="ResidentialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ResidentialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ResidentialRealEstateMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="CommercialRealEstateMember" xlink:title="CommercialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="CommercialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to CommercialRealEstateMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AgriculturalMember" xlink:label="AgriculturalMember" xlink:title="AgriculturalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="AgriculturalMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to AgriculturalMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="ConstructionLoansMember" xlink:title="ConstructionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ConstructionLoansMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ConstructionLoansMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" xlink:label="MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" xlink:title="MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MortgageLoansOnRealEstateLoanCategoryDomain" xlink:label="MortgageLoansOnRealEstateLoanCategoryDomain" xlink:title="MortgageLoansOnRealEstateLoanCategoryDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" xlink:to="MortgageLoansOnRealEstateLoanCategoryDomain" xlink:title="definition: MortgageLoansOnRealEstateDescriptionLoanCategoryAxis to MortgageLoansOnRealEstateLoanCategoryDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MortgageLoansOnRealEstateLoanCategoryDomain" xlink:label="MortgageLoansOnRealEstateLoanCategoryDomain_2" xlink:title="MortgageLoansOnRealEstateLoanCategoryDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" xlink:to="MortgageLoansOnRealEstateLoanCategoryDomain_2" xlink:title="definition: MortgageLoansOnRealEstateDescriptionLoanCategoryAxis to MortgageLoansOnRealEstateLoanCategoryDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FirstMortgageMember" xlink:label="FirstMortgageMember" xlink:title="FirstMortgageMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="MortgageLoansOnRealEstateLoanCategoryDomain" xlink:to="FirstMortgageMember" xlink:title="definition: MortgageLoansOnRealEstateLoanCategoryDomain to FirstMortgageMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SecondMortgageMember" xlink:label="SecondMortgageMember" xlink:title="SecondMortgageMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="MortgageLoansOnRealEstateLoanCategoryDomain" xlink:to="SecondMortgageMember" xlink:title="definition: MortgageLoansOnRealEstateLoanCategoryDomain to SecondMortgageMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="RangeAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to RangeAxis" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RangeAxis" xlink:to="RangeMember" xlink:title="definition: RangeAxis to RangeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember_2" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RangeAxis" xlink:to="RangeMember_2" xlink:title="definition: RangeAxis to RangeMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MinimumMember" xlink:title="definition: RangeMember to MinimumMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MaximumMember" xlink:title="definition: RangeMember to MaximumMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansImpairedFinancingReceivableDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableImpairedLineItems" xlink:label="FinancingReceivableImpairedLineItems" xlink:title="FinancingReceivableImpairedLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ImpairedFinancingReceivableAbstract" xlink:label="ImpairedFinancingReceivableAbstract" xlink:title="ImpairedFinancingReceivableAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableAbstract" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance" xlink:label="ImpairedFinancingReceivableUnpaidPrincipalBalance" xlink:title="ImpairedFinancingReceivableUnpaidPrincipalBalance" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableUnpaidPrincipalBalance" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableUnpaidPrincipalBalance" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:label="ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:title="ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:label="ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:title="ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableRecordedInvestment" xlink:label="ImpairedFinancingReceivableRecordedInvestment" xlink:title="ImpairedFinancingReceivableRecordedInvestment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableRecordedInvestment" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableRecordedInvestment" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableRelatedAllowance" xlink:label="ImpairedFinancingReceivableRelatedAllowance" xlink:title="ImpairedFinancingReceivableRelatedAllowance" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableRelatedAllowance" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableRelatedAllowance" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment" xlink:label="ImpairedFinancingReceivableAverageRecordedInvestment" xlink:title="ImpairedFinancingReceivableAverageRecordedInvestment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableAverageRecordedInvestment" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableAverageRecordedInvestment" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:label="ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:title="ImpairedFinancingReceivableInterestIncomeAccrualMethod" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableInterestIncomeAccrualMethod" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod" xlink:label="ImpairedFinancingReceivableInterestIncomeCashBasisMethod" xlink:title="ImpairedFinancingReceivableInterestIncomeCashBasisMethod" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ImpairedFinancingReceivableInterestIncomeCashBasisMethod" xlink:title="definition: FinancingReceivableImpairedLineItems to ImpairedFinancingReceivableInterestIncomeCashBasisMethod" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfImpairedFinancingReceivableTable" xlink:label="ScheduleOfImpairedFinancingReceivableTable" xlink:title="ScheduleOfImpairedFinancingReceivableTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableImpairedLineItems" xlink:to="ScheduleOfImpairedFinancingReceivableTable" xlink:title="definition: FinancingReceivableImpairedLineItems to ScheduleOfImpairedFinancingReceivableTable" order="10.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfImpairedFinancingReceivableTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfImpairedFinancingReceivableTable to FinancingReceivablePortfolioSegmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_RealEstateLoansMember" xlink:label="RealEstateLoansMember" xlink:title="RealEstateLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="RealEstateLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to RealEstateLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsumerPortfolioSegmentMember" xlink:label="ConsumerPortfolioSegmentMember" xlink:title="ConsumerPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="ConsumerPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to ConsumerPortfolioSegmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember" xlink:label="CommercialPortfolioSegmentMember" xlink:title="CommercialPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="CommercialPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to CommercialPortfolioSegmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherAgriculturalLoansMember" xlink:label="OtherAgriculturalLoansMember" xlink:title="OtherAgriculturalLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="OtherAgriculturalLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to OtherAgriculturalLoansMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_StateAndPoliticalSubdivisionLoansMember" xlink:label="StateAndPoliticalSubdivisionLoansMember" xlink:title="StateAndPoliticalSubdivisionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="StateAndPoliticalSubdivisionLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to StateAndPoliticalSubdivisionLoansMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfImpairedFinancingReceivableTable" xlink:to="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="definition: ScheduleOfImpairedFinancingReceivableTable to FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResidentialMortgageMember" xlink:label="ResidentialMortgageMember" xlink:title="ResidentialMortgageMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ResidentialMortgageMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ResidentialMortgageMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HomeEquityMember" xlink:label="HomeEquityMember" xlink:title="HomeEquityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="HomeEquityMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to HomeEquityMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="CommercialRealEstateMember" xlink:title="CommercialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="CommercialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to CommercialRealEstateMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AgriculturalMember" xlink:label="AgriculturalMember" xlink:title="AgriculturalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="AgriculturalMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to AgriculturalMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="ConstructionLoansMember" xlink:title="ConstructionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ConstructionLoansMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ConstructionLoansMember" order="5.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansCreditQualityIndicatorDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems" xlink:label="FinancingReceivableRecordedInvestmentLineItems" xlink:title="FinancingReceivableRecordedInvestmentLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableAbstract" xlink:label="FinancingReceivableAbstract" xlink:title="FinancingReceivableAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="FinancingReceivableAbstract" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to FinancingReceivableAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableByCreditExposureAbstract" xlink:label="FinancingReceivableByCreditExposureAbstract" xlink:title="FinancingReceivableByCreditExposureAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="FinancingReceivableByCreditExposureAbstract" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to FinancingReceivableByCreditExposureAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesReceivableNet" xlink:label="NotesReceivableNet" xlink:title="NotesReceivableNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="NotesReceivableNet" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to NotesReceivableNet" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_PercentageOfCommercialLoanPortfolioToBeReviewed" xlink:label="PercentageOfCommercialLoanPortfolioToBeReviewed" xlink:title="PercentageOfCommercialLoanPortfolioToBeReviewed" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="PercentageOfCommercialLoanPortfolioToBeReviewed" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to PercentageOfCommercialLoanPortfolioToBeReviewed" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AmountOverWhichAllNewLoansToBeReviewedMinimum" xlink:label="AmountOverWhichAllNewLoansToBeReviewedMinimum" xlink:title="AmountOverWhichAllNewLoansToBeReviewedMinimum" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="AmountOverWhichAllNewLoansToBeReviewedMinimum" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to AmountOverWhichAllNewLoansToBeReviewedMinimum" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AmountOverWhichAllRelationshipToBeReviewed" xlink:label="AmountOverWhichAllRelationshipToBeReviewed" xlink:title="AmountOverWhichAllRelationshipToBeReviewed" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="AmountOverWhichAllRelationshipToBeReviewed" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to AmountOverWhichAllRelationshipToBeReviewed" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AmountWhichIs30DaysPastDueToBeReviewedForAllAggregateLoanRelationships" xlink:label="AmountWhichIs30DaysPastDueToBeReviewedForAllAggregateLoanRelationships" xlink:title="AmountWhichIs30DaysPastDueToBeReviewedForAllAggregateLoanRelationships" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="AmountWhichIs30DaysPastDueToBeReviewedForAllAggregateLoanRelationships" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to AmountWhichIs30DaysPastDueToBeReviewedForAllAggregateLoanRelationships" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:label="ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:title="ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableRecordedInvestmentLineItems" xlink:to="ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:title="definition: FinancingReceivableRecordedInvestmentLineItems to ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" order="8.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InternalCreditAssessmentAxis" xlink:label="InternalCreditAssessmentAxis" xlink:title="InternalCreditAssessmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:to="InternalCreditAssessmentAxis" xlink:title="definition: ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable to InternalCreditAssessmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InternalCreditAssessmentDomain" xlink:label="InternalCreditAssessmentDomain" xlink:title="InternalCreditAssessmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="InternalCreditAssessmentAxis" xlink:to="InternalCreditAssessmentDomain" xlink:title="definition: InternalCreditAssessmentAxis to InternalCreditAssessmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InternalCreditAssessmentDomain" xlink:label="InternalCreditAssessmentDomain_2" xlink:title="InternalCreditAssessmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="InternalCreditAssessmentAxis" xlink:to="InternalCreditAssessmentDomain_2" xlink:title="definition: InternalCreditAssessmentAxis to InternalCreditAssessmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PassMember" xlink:label="PassMember" xlink:title="PassMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="PassMember" xlink:title="definition: InternalCreditAssessmentDomain to PassMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SpecialMentionMember" xlink:label="SpecialMentionMember" xlink:title="SpecialMentionMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="SpecialMentionMember" xlink:title="definition: InternalCreditAssessmentDomain to SpecialMentionMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubstandardMember" xlink:label="SubstandardMember" xlink:title="SubstandardMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="SubstandardMember" xlink:title="definition: InternalCreditAssessmentDomain to SubstandardMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DoubtfulMember" xlink:label="DoubtfulMember" xlink:title="DoubtfulMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="DoubtfulMember" xlink:title="definition: InternalCreditAssessmentDomain to DoubtfulMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnlikelyToBeCollectedFinancingReceivableMember" xlink:label="UnlikelyToBeCollectedFinancingReceivableMember" xlink:title="UnlikelyToBeCollectedFinancingReceivableMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="UnlikelyToBeCollectedFinancingReceivableMember" xlink:title="definition: InternalCreditAssessmentDomain to UnlikelyToBeCollectedFinancingReceivableMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_InternallyAssignedGrade1Member" xlink:label="InternallyAssignedGrade1Member" xlink:title="InternallyAssignedGrade1Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="InternallyAssignedGrade1Member" xlink:title="definition: InternalCreditAssessmentDomain to InternallyAssignedGrade1Member" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformingFinancingReceivableMember" xlink:label="PerformingFinancingReceivableMember" xlink:title="PerformingFinancingReceivableMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="PerformingFinancingReceivableMember" xlink:title="definition: InternalCreditAssessmentDomain to PerformingFinancingReceivableMember" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonperformingFinancingReceivableMember" xlink:label="NonperformingFinancingReceivableMember" xlink:title="NonperformingFinancingReceivableMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="NonperformingFinancingReceivableMember" xlink:title="definition: InternalCreditAssessmentDomain to NonperformingFinancingReceivableMember" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_PurchasedCreditImpairedLoanMember" xlink:label="PurchasedCreditImpairedLoanMember" xlink:title="PurchasedCreditImpairedLoanMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InternalCreditAssessmentDomain" xlink:to="PurchasedCreditImpairedLoanMember" xlink:title="definition: InternalCreditAssessmentDomain to PurchasedCreditImpairedLoanMember" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable to FinancingReceivablePortfolioSegmentAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_RealEstateLoansMember" xlink:label="RealEstateLoansMember" xlink:title="RealEstateLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="RealEstateLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to RealEstateLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsumerPortfolioSegmentMember" xlink:label="ConsumerPortfolioSegmentMember" xlink:title="ConsumerPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="ConsumerPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to ConsumerPortfolioSegmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember" xlink:label="CommercialPortfolioSegmentMember" xlink:title="CommercialPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="CommercialPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to CommercialPortfolioSegmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherAgriculturalLoansMember" xlink:label="OtherAgriculturalLoansMember" xlink:title="OtherAgriculturalLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="OtherAgriculturalLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to OtherAgriculturalLoansMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_StateAndPoliticalSubdivisionLoansMember" xlink:label="StateAndPoliticalSubdivisionLoansMember" xlink:title="StateAndPoliticalSubdivisionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="StateAndPoliticalSubdivisionLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to StateAndPoliticalSubdivisionLoansMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:to="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="definition: ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable to FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="CommercialRealEstateMember" xlink:title="CommercialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="CommercialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to CommercialRealEstateMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AgriculturalMember" xlink:label="AgriculturalMember" xlink:title="AgriculturalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="AgriculturalMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to AgriculturalMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="ConstructionLoansMember" xlink:title="ConstructionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ConstructionLoansMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ConstructionLoansMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResidentialMortgageMember" xlink:label="ResidentialMortgageMember" xlink:title="ResidentialMortgageMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ResidentialMortgageMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ResidentialMortgageMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HomeEquityMember" xlink:label="HomeEquityMember" xlink:title="HomeEquityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="HomeEquityMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to HomeEquityMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:to="RangeAxis" xlink:title="definition: ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable to RangeAxis" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RangeAxis" xlink:to="RangeMember" xlink:title="definition: RangeAxis to RangeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember_2" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RangeAxis" xlink:to="RangeMember_2" xlink:title="definition: RangeAxis to RangeMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MinimumMember" xlink:title="definition: RangeMember to MinimumMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansPastDueDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:label="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:title="FinancingReceivableRecordedInvestmentPastDueLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract" xlink:label="FinancingReceivableRecordedInvestmentAgingAbstract" xlink:title="FinancingReceivableRecordedInvestmentAgingAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentAgingAbstract" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentAgingAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivablesOnNonaccrualStatusAbstract" xlink:label="FinancingReceivablesOnNonaccrualStatusAbstract" xlink:title="FinancingReceivablesOnNonaccrualStatusAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivablesOnNonaccrualStatusAbstract" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivablesOnNonaccrualStatusAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivablesOnAccrualStatusAbstract" xlink:label="FinancingReceivablesOnAccrualStatusAbstract" xlink:title="FinancingReceivablesOnAccrualStatusAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivablesOnAccrualStatusAbstract" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivablesOnAccrualStatusAbstract" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableRecordedInvestmentTotalPastDueAndStillAccruing" xlink:label="FinancingReceivableRecordedInvestmentTotalPastDueAndStillAccruing" xlink:title="FinancingReceivableRecordedInvestmentTotalPastDueAndStillAccruing" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentTotalPastDueAndStillAccruing" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentTotalPastDueAndStillAccruing" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableRecordedInvestmentCurrentAndStillAccruing" xlink:label="FinancingReceivableRecordedInvestmentCurrentAndStillAccruing" xlink:title="FinancingReceivableRecordedInvestmentCurrentAndStillAccruing" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentCurrentAndStillAccruing" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentCurrentAndStillAccruing" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_PurchasedCreditImpairedLoansAndStillAccruing" xlink:label="PurchasedCreditImpairedLoansAndStillAccruing" xlink:title="PurchasedCreditImpairedLoansAndStillAccruing" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="PurchasedCreditImpairedLoansAndStillAccruing" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to PurchasedCreditImpairedLoansAndStillAccruing" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableRecordedInvestmentTotalAndStillAccruing" xlink:label="FinancingReceivableRecordedInvestmentTotalAndStillAccruing" xlink:title="FinancingReceivableRecordedInvestmentTotalAndStillAccruing" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentTotalAndStillAccruing" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentTotalAndStillAccruing" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableRecordedInvestmentTotalPastDueAndNonAccrual" xlink:label="FinancingReceivableRecordedInvestmentTotalPastDueAndNonAccrual" xlink:title="FinancingReceivableRecordedInvestmentTotalPastDueAndNonAccrual" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentTotalPastDueAndNonAccrual" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentTotalPastDueAndNonAccrual" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableRecordedInvestmentCurrentAndNonAccrual" xlink:label="FinancingReceivableRecordedInvestmentCurrentAndNonAccrual" xlink:title="FinancingReceivableRecordedInvestmentCurrentAndNonAccrual" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentCurrentAndNonAccrual" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentCurrentAndNonAccrual" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_PurchasedCreditImpairedLoansNonAccrual" xlink:label="PurchasedCreditImpairedLoansNonAccrual" xlink:title="PurchasedCreditImpairedLoansNonAccrual" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="PurchasedCreditImpairedLoansNonAccrual" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to PurchasedCreditImpairedLoansNonAccrual" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:label="FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:title="FinancingReceivableRecordedInvestmentNonaccrualStatus" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentNonaccrualStatus" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_PeriodPastDueAfterWhichLoansConsideredAsNonAccrual" xlink:label="PeriodPastDueAfterWhichLoansConsideredAsNonAccrual" xlink:title="PeriodPastDueAfterWhichLoansConsideredAsNonAccrual" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="PeriodPastDueAfterWhichLoansConsideredAsNonAccrual" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to PeriodPastDueAfterWhichLoansConsideredAsNonAccrual" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:label="FinancingReceivableRecordedInvestmentPastDue" xlink:title="FinancingReceivableRecordedInvestmentPastDue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentPastDue" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentPastDue" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:label="FinancingReceivableRecordedInvestmentCurrent" xlink:title="FinancingReceivableRecordedInvestmentCurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestmentCurrent" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestmentCurrent" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_PurchasedCreditImpairedLoans" xlink:label="PurchasedCreditImpairedLoans" xlink:title="PurchasedCreditImpairedLoans" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="PurchasedCreditImpairedLoans" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to PurchasedCreditImpairedLoans" order="15.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:label="LoansAndLeasesReceivableGrossCarryingAmount" xlink:title="LoansAndLeasesReceivableGrossCarryingAmount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="LoansAndLeasesReceivableGrossCarryingAmount" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to LoansAndLeasesReceivableGrossCarryingAmount" order="16.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing" xlink:label="FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing" xlink:title="FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing" order="17.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFinancingReceivablesPastDueTable" xlink:label="ScheduleOfFinancingReceivablesPastDueTable" xlink:title="ScheduleOfFinancingReceivablesPastDueTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:to="ScheduleOfFinancingReceivablesPastDueTable" xlink:title="definition: FinancingReceivableRecordedInvestmentPastDueLineItems to ScheduleOfFinancingReceivablesPastDueTable" order="18.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivablesPastDueTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfFinancingReceivablesPastDueTable to FinancingReceivablePortfolioSegmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_RealEstateLoansMember" xlink:label="RealEstateLoansMember" xlink:title="RealEstateLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="RealEstateLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to RealEstateLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsumerPortfolioSegmentMember" xlink:label="ConsumerPortfolioSegmentMember" xlink:title="ConsumerPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="ConsumerPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to ConsumerPortfolioSegmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember" xlink:label="CommercialPortfolioSegmentMember" xlink:title="CommercialPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="CommercialPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to CommercialPortfolioSegmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherAgriculturalLoansMember" xlink:label="OtherAgriculturalLoansMember" xlink:title="OtherAgriculturalLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="OtherAgriculturalLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to OtherAgriculturalLoansMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_StateAndPoliticalSubdivisionLoansMember" xlink:label="StateAndPoliticalSubdivisionLoansMember" xlink:title="StateAndPoliticalSubdivisionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="StateAndPoliticalSubdivisionLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to StateAndPoliticalSubdivisionLoansMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivablesPastDueTable" xlink:to="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="definition: ScheduleOfFinancingReceivablesPastDueTable to FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResidentialMortgageMember" xlink:label="ResidentialMortgageMember" xlink:title="ResidentialMortgageMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ResidentialMortgageMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ResidentialMortgageMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HomeEquityMember" xlink:label="HomeEquityMember" xlink:title="HomeEquityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="HomeEquityMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to HomeEquityMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="CommercialRealEstateMember" xlink:title="CommercialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="CommercialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to CommercialRealEstateMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AgriculturalMember" xlink:label="AgriculturalMember" xlink:title="AgriculturalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="AgriculturalMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to AgriculturalMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="ConstructionLoansMember" xlink:title="ConstructionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ConstructionLoansMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ConstructionLoansMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis" xlink:label="FinancingReceivablesPeriodPastDueAxis" xlink:title="FinancingReceivablesPeriodPastDueAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivablesPastDueTable" xlink:to="FinancingReceivablesPeriodPastDueAxis" xlink:title="definition: ScheduleOfFinancingReceivablesPastDueTable to FinancingReceivablesPeriodPastDueAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain" xlink:label="FinancingReceivablesPeriodPastDueDomain" xlink:title="FinancingReceivablesPeriodPastDueDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablesPeriodPastDueAxis" xlink:to="FinancingReceivablesPeriodPastDueDomain" xlink:title="definition: FinancingReceivablesPeriodPastDueAxis to FinancingReceivablesPeriodPastDueDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain" xlink:label="FinancingReceivablesPeriodPastDueDomain_2" xlink:title="FinancingReceivablesPeriodPastDueDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablesPeriodPastDueAxis" xlink:to="FinancingReceivablesPeriodPastDueDomain_2" xlink:title="definition: FinancingReceivablesPeriodPastDueAxis to FinancingReceivablesPeriodPastDueDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:label="FinancingReceivables30To59DaysPastDueMember" xlink:title="FinancingReceivables30To59DaysPastDueMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablesPeriodPastDueDomain" xlink:to="FinancingReceivables30To59DaysPastDueMember" xlink:title="definition: FinancingReceivablesPeriodPastDueDomain to FinancingReceivables30To59DaysPastDueMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:label="FinancingReceivables60To89DaysPastDueMember" xlink:title="FinancingReceivables60To89DaysPastDueMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablesPeriodPastDueDomain" xlink:to="FinancingReceivables60To89DaysPastDueMember" xlink:title="definition: FinancingReceivablesPeriodPastDueDomain to FinancingReceivables60To89DaysPastDueMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" xlink:label="FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" xlink:title="FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablesPeriodPastDueDomain" xlink:to="FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" xlink:title="definition: FinancingReceivablesPeriodPastDueDomain to FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivablesPastDueTable" xlink:to="RangeAxis" xlink:title="definition: ScheduleOfFinancingReceivablesPastDueTable to RangeAxis" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RangeAxis" xlink:to="RangeMember" xlink:title="definition: RangeAxis to RangeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember_2" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RangeAxis" xlink:to="RangeMember_2" xlink:title="definition: RangeAxis to RangeMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MinimumMember" xlink:title="definition: RangeMember to MinimumMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansTroubleDebtRestructuringDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableModificationsLineItems" xlink:label="FinancingReceivableModificationsLineItems" xlink:title="FinancingReceivableModificationsLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FinancingReceivableModificationsAbstract" xlink:label="FinancingReceivableModificationsAbstract" xlink:title="FinancingReceivableModificationsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="FinancingReceivableModificationsAbstract" xlink:title="definition: FinancingReceivableModificationsLineItems to FinancingReceivableModificationsAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_SubsequentDefaultAbstract" xlink:label="SubsequentDefaultAbstract" xlink:title="SubsequentDefaultAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="SubsequentDefaultAbstract" xlink:title="definition: FinancingReceivableModificationsLineItems to SubsequentDefaultAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1" xlink:label="FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1" xlink:title="FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1" xlink:title="definition: FinancingReceivableModificationsLineItems to FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1" xlink:label="FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1" xlink:title="FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1" xlink:title="definition: FinancingReceivableModificationsLineItems to FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableModificationsNumberOfContracts2" xlink:label="FinancingReceivableModificationsNumberOfContracts2" xlink:title="FinancingReceivableModificationsNumberOfContracts2" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="FinancingReceivableModificationsNumberOfContracts2" xlink:title="definition: FinancingReceivableModificationsLineItems to FinancingReceivableModificationsNumberOfContracts2" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2" xlink:label="FinancingReceivableModificationsPreModificationRecordedInvestment2" xlink:title="FinancingReceivableModificationsPreModificationRecordedInvestment2" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="FinancingReceivableModificationsPreModificationRecordedInvestment2" xlink:title="definition: FinancingReceivableModificationsLineItems to FinancingReceivableModificationsPreModificationRecordedInvestment2" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2" xlink:label="FinancingReceivableModificationsPostModificationRecordedInvestment2" xlink:title="FinancingReceivableModificationsPostModificationRecordedInvestment2" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="FinancingReceivableModificationsPostModificationRecordedInvestment2" xlink:title="definition: FinancingReceivableModificationsLineItems to FinancingReceivableModificationsPostModificationRecordedInvestment2" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:label="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:title="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:title="definition: FinancingReceivableModificationsLineItems to ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" order="8.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable to FinancingReceivablePortfolioSegmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_RealEstateLoansMember" xlink:label="RealEstateLoansMember" xlink:title="RealEstateLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="RealEstateLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to RealEstateLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember" xlink:label="CommercialPortfolioSegmentMember" xlink:title="CommercialPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="CommercialPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to CommercialPortfolioSegmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherAgriculturalLoansMember" xlink:label="OtherAgriculturalLoansMember" xlink:title="OtherAgriculturalLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="OtherAgriculturalLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to OtherAgriculturalLoansMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:to="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="definition: ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable to FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HomeEquityMember" xlink:label="HomeEquityMember" xlink:title="HomeEquityMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="HomeEquityMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to HomeEquityMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResidentialMortgageMember" xlink:label="ResidentialMortgageMember" xlink:title="ResidentialMortgageMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ResidentialMortgageMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ResidentialMortgageMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="CommercialRealEstateMember" xlink:title="CommercialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="CommercialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to CommercialRealEstateMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AgriculturalMember" xlink:label="AgriculturalMember" xlink:title="AgriculturalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="AgriculturalMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to AgriculturalMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoanRestructuringModificationAxis" xlink:label="LoanRestructuringModificationAxis" xlink:title="LoanRestructuringModificationAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:to="LoanRestructuringModificationAxis" xlink:title="definition: ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable to LoanRestructuringModificationAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoanRestructuringModificationDomain" xlink:label="LoanRestructuringModificationDomain" xlink:title="LoanRestructuringModificationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LoanRestructuringModificationAxis" xlink:to="LoanRestructuringModificationDomain" xlink:title="definition: LoanRestructuringModificationAxis to LoanRestructuringModificationDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoanRestructuringModificationDomain" xlink:label="LoanRestructuringModificationDomain_2" xlink:title="LoanRestructuringModificationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="LoanRestructuringModificationAxis" xlink:to="LoanRestructuringModificationDomain_2" xlink:title="definition: LoanRestructuringModificationAxis to LoanRestructuringModificationDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_InterestModificationMember" xlink:label="InterestModificationMember" xlink:title="InterestModificationMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LoanRestructuringModificationDomain" xlink:to="InterestModificationMember" xlink:title="definition: LoanRestructuringModificationDomain to InterestModificationMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_TermModificationMember" xlink:label="TermModificationMember" xlink:title="TermModificationMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LoanRestructuringModificationDomain" xlink:to="TermModificationMember" xlink:title="definition: LoanRestructuringModificationDomain to TermModificationMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansAllowanceForLoanLossesDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems" xlink:label="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:title="FinancingReceivableAllowanceForCreditLossesLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract" xlink:label="FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract" xlink:title="FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:label="FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:title="FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:label="FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:title="FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:label="FinancingReceivableAllowanceForCreditLosses" xlink:title="FinancingReceivableAllowanceForCreditLosses" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLosses" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLosses" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:label="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:title="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" order="5.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to FinancingReceivablePortfolioSegmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_RealEstateLoansMember" xlink:label="RealEstateLoansMember" xlink:title="RealEstateLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="RealEstateLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to RealEstateLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsumerPortfolioSegmentMember" xlink:label="ConsumerPortfolioSegmentMember" xlink:title="ConsumerPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="ConsumerPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to ConsumerPortfolioSegmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember" xlink:label="CommercialPortfolioSegmentMember" xlink:title="CommercialPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="CommercialPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to CommercialPortfolioSegmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherAgriculturalLoansMember" xlink:label="OtherAgriculturalLoansMember" xlink:title="OtherAgriculturalLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="OtherAgriculturalLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to OtherAgriculturalLoansMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_StateAndPoliticalSubdivisionLoansMember" xlink:label="StateAndPoliticalSubdivisionLoansMember" xlink:title="StateAndPoliticalSubdivisionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="StateAndPoliticalSubdivisionLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to StateAndPoliticalSubdivisionLoansMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnallocatedFinancingReceivablesMember" xlink:label="UnallocatedFinancingReceivablesMember" xlink:title="UnallocatedFinancingReceivablesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="UnallocatedFinancingReceivablesMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to UnallocatedFinancingReceivablesMember" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="ResidentialRealEstateMember" xlink:title="ResidentialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ResidentialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ResidentialRealEstateMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="CommercialRealEstateMember" xlink:title="CommercialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="CommercialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to CommercialRealEstateMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AgriculturalMember" xlink:label="AgriculturalMember" xlink:title="AgriculturalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="AgriculturalMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to AgriculturalMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="ConstructionLoansMember" xlink:title="ConstructionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ConstructionLoansMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ConstructionLoansMember" order="4.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansAllowanceForLoanLossesByPortfolioSegmentDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems" xlink:label="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:title="FinancingReceivableAllowanceForCreditLossesLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward" xlink:label="FinancingReceivableAllowanceForCreditLossesRollForward" xlink:title="FinancingReceivableAllowanceForCreditLossesRollForward" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossesRollForward" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossesRollForward" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:label="FinancingReceivableAllowanceForCreditLosses" xlink:title="FinancingReceivableAllowanceForCreditLosses" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLosses" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLosses" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs" xlink:label="FinancingReceivableAllowanceForCreditLossesWriteOffs" xlink:title="FinancingReceivableAllowanceForCreditLossesWriteOffs" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossesWriteOffs" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossesWriteOffs" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery" xlink:label="FinancingReceivableAllowanceForCreditLossesRecovery" xlink:title="FinancingReceivableAllowanceForCreditLossesRecovery" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="FinancingReceivableAllowanceForCreditLossesRecovery" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to FinancingReceivableAllowanceForCreditLossesRecovery" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="ProvisionForLoanAndLeaseLosses" xlink:title="ProvisionForLoanAndLeaseLosses" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="ProvisionForLoanAndLeaseLosses" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to ProvisionForLoanAndLeaseLosses" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:label="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:title="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableAllowanceForCreditLossesLineItems" xlink:to="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:title="definition: FinancingReceivableAllowanceForCreditLossesLineItems to ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" order="6.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to FinancingReceivablePortfolioSegmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_RealEstateLoansMember" xlink:label="RealEstateLoansMember" xlink:title="RealEstateLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="RealEstateLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to RealEstateLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsumerPortfolioSegmentMember" xlink:label="ConsumerPortfolioSegmentMember" xlink:title="ConsumerPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="ConsumerPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to ConsumerPortfolioSegmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPortfolioSegmentMember" xlink:label="CommercialPortfolioSegmentMember" xlink:title="CommercialPortfolioSegmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="CommercialPortfolioSegmentMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to CommercialPortfolioSegmentMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherAgriculturalLoansMember" xlink:label="OtherAgriculturalLoansMember" xlink:title="OtherAgriculturalLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="OtherAgriculturalLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to OtherAgriculturalLoansMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_StateAndPoliticalSubdivisionLoansMember" xlink:label="StateAndPoliticalSubdivisionLoansMember" xlink:title="StateAndPoliticalSubdivisionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="StateAndPoliticalSubdivisionLoansMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to StateAndPoliticalSubdivisionLoansMember" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnallocatedFinancingReceivablesMember" xlink:label="UnallocatedFinancingReceivablesMember" xlink:title="UnallocatedFinancingReceivablesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="UnallocatedFinancingReceivablesMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to UnallocatedFinancingReceivablesMember" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:to="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:title="definition: ScheduleOfFinancingReceivableAllowanceForCreditLossesTable to FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" xlink:title="definition: FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis to FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="ResidentialRealEstateMember" xlink:title="ResidentialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ResidentialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ResidentialRealEstateMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="CommercialRealEstateMember" xlink:title="CommercialRealEstateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="CommercialRealEstateMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to CommercialRealEstateMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AgriculturalMember" xlink:label="AgriculturalMember" xlink:title="AgriculturalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="AgriculturalMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to AgriculturalMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="ConstructionLoansMember" xlink:title="ConstructionLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="ConstructionLoansMember" xlink:title="definition: FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain to ConstructionLoansMember" order="4.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/LoansForeclosedAssetsHeldForSaleDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableModificationsLineItems" xlink:label="FinancingReceivableModificationsLineItems" xlink:title="FinancingReceivableModificationsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherRealEstateAndForeclosedAssetsAbstract" xlink:label="OtherRealEstateAndForeclosedAssetsAbstract" xlink:title="OtherRealEstateAndForeclosedAssetsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="OtherRealEstateAndForeclosedAssetsAbstract" xlink:title="definition: FinancingReceivableModificationsLineItems to OtherRealEstateAndForeclosedAssetsAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherRealEstateAndForeclosedAssets" xlink:label="OtherRealEstateAndForeclosedAssets" xlink:title="OtherRealEstateAndForeclosedAssets" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="OtherRealEstateAndForeclosedAssets" xlink:title="definition: FinancingReceivableModificationsLineItems to OtherRealEstateAndForeclosedAssets" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MortgageLoansInProcessOfForeclosureAmount" xlink:label="MortgageLoansInProcessOfForeclosureAmount" xlink:title="MortgageLoansInProcessOfForeclosureAmount" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="MortgageLoansInProcessOfForeclosureAmount" xlink:title="definition: FinancingReceivableModificationsLineItems to MortgageLoansInProcessOfForeclosureAmount" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:label="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:title="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FinancingReceivableModificationsLineItems" xlink:to="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:title="definition: FinancingReceivableModificationsLineItems to ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" order="4.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="FinancingReceivablePortfolioSegmentAxis" xlink:title="FinancingReceivablePortfolioSegmentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable" xlink:to="FinancingReceivablePortfolioSegmentAxis" xlink:title="definition: ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable to FinancingReceivablePortfolioSegmentAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentDomain" xlink:label="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="FinancingReceivablePortfolioSegmentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancingReceivablePortfolioSegmentAxis" xlink:to="FinancingReceivablePortfolioSegmentDomain_2" xlink:title="definition: FinancingReceivablePortfolioSegmentAxis to FinancingReceivablePortfolioSegmentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ConsumerResidentialMortgagesMember" xlink:label="ConsumerResidentialMortgagesMember" xlink:title="ConsumerResidentialMortgagesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FinancingReceivablePortfolioSegmentDomain" xlink:to="ConsumerResidentialMortgagesMember" xlink:title="definition: FinancingReceivablePortfolioSegmentDomain to ConsumerResidentialMortgagesMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/GoodwillAndOtherIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="FiniteLivedIntangibleAssetsLineItems" xlink:title="FiniteLivedIntangibleAssetsLineItems" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_GrossCarryingValueOfIntangibleAssetsAndAccumulatedAmortizationAbstract" xlink:label="GrossCarryingValueOfIntangibleAssetsAndAccumulatedAmortizationAbstract" xlink:title="GrossCarryingValueOfIntangibleAssetsAndAccumulatedAmortizationAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="GrossCarryingValueOfIntangibleAssetsAndAccumulatedAmortizationAbstract" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to GrossCarryingValueOfIntangibleAssetsAndAccumulatedAmortizationAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:label="FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:title="FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="AmortizationOfIntangibleAssets" xlink:title="AmortizationOfIntangibleAssets" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="AmortizationOfIntangibleAssets" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to AmortizationOfIntangibleAssets" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" xlink:label="FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" xlink:title="FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract" xlink:label="FiniteLivedIntangibleAssetsNetAbstract" xlink:title="FiniteLivedIntangibleAssetsNetAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsNetAbstract" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsNetAbstract" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_IndefiniteLivedIntangibleAssetsNetAbstract" xlink:label="IndefiniteLivedIntangibleAssetsNetAbstract" xlink:title="IndefiniteLivedIntangibleAssetsNetAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="IndefiniteLivedIntangibleAssetsNetAbstract" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to IndefiniteLivedIntangibleAssetsNetAbstract" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="Goodwill" xlink:title="Goodwill" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="Goodwill" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to Goodwill" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="FiniteLivedIntangibleAssetsGross" xlink:title="FiniteLivedIntangibleAssetsGross" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsGross" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsGross" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsAccumulatedAmortization" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="FiniteLivedIntangibleAssetsNet" xlink:title="FiniteLivedIntangibleAssetsNet" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="FiniteLivedIntangibleAssetsNet" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to FiniteLivedIntangibleAssetsNet" order="15.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:title="ScheduleOfFiniteLivedIntangibleAssetsTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FiniteLivedIntangibleAssetsLineItems" xlink:to="ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:title="definition: FiniteLivedIntangibleAssetsLineItems to ScheduleOfFiniteLivedIntangibleAssetsTable" order="16.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="definition: ScheduleOfFiniteLivedIntangibleAssetsTable to FiniteLivedIntangibleAssetsByMajorClassAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="definition: FiniteLivedIntangibleAssetsByMajorClassAxis to FiniteLivedIntangibleAssetsMajorClassNameDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="FiniteLivedIntangibleAssetsMajorClassNameDomain_2" xlink:title="FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="FiniteLivedIntangibleAssetsMajorClassNameDomain_2" xlink:title="definition: FiniteLivedIntangibleAssetsByMajorClassAxis to FiniteLivedIntangibleAssetsMajorClassNameDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ServicingContractsMember" xlink:label="ServicingContractsMember" xlink:title="ServicingContractsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="ServicingContractsMember" xlink:title="definition: FiniteLivedIntangibleAssetsMajorClassNameDomain to ServicingContractsMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CoreDepositsMember" xlink:label="CoreDepositsMember" xlink:title="CoreDepositsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="CoreDepositsMember" xlink:title="definition: FiniteLivedIntangibleAssetsMajorClassNameDomain to CoreDepositsMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncompeteAgreementsMember" xlink:label="NoncompeteAgreementsMember" xlink:title="NoncompeteAgreementsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="NoncompeteAgreementsMember" xlink:title="definition: FiniteLivedIntangibleAssetsMajorClassNameDomain to NoncompeteAgreementsMember" order="3.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/RepurchaseAgreementsDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems" xlink:label="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems" xlink:title="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseAbstract" xlink:label="SecuritiesSoldUnderAgreementsToRepurchaseAbstract" xlink:title="SecuritiesSoldUnderAgreementsToRepurchaseAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems" xlink:to="SecuritiesSoldUnderAgreementsToRepurchaseAbstract" xlink:title="definition: TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems to SecuritiesSoldUnderAgreementsToRepurchaseAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseGross" xlink:label="SecuritiesSoldUnderAgreementsToRepurchaseGross" xlink:title="SecuritiesSoldUnderAgreementsToRepurchaseGross" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems" xlink:to="SecuritiesSoldUnderAgreementsToRepurchaseGross" xlink:title="definition: TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems to SecuritiesSoldUnderAgreementsToRepurchaseGross" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchase" xlink:label="SecuritiesSoldUnderAgreementsToRepurchase" xlink:title="SecuritiesSoldUnderAgreementsToRepurchase" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems" xlink:to="SecuritiesSoldUnderAgreementsToRepurchase" xlink:title="definition: TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems to SecuritiesSoldUnderAgreementsToRepurchase" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable" xlink:label="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable" xlink:title="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems" xlink:to="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable" xlink:title="definition: TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsLineItems to TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable" order="4.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis" xlink:label="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis" xlink:title="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable" xlink:to="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis" xlink:title="definition: TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable to AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:label="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:title="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis" xlink:to="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:title="definition: AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis to AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:label="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_2" xlink:title="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis" xlink:to="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_2" xlink:title="definition: AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis to AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_MaturityOvernightAndContinuousMember" xlink:label="MaturityOvernightAndContinuousMember" xlink:title="MaturityOvernightAndContinuousMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:to="MaturityOvernightAndContinuousMember" xlink:title="definition: AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain to MaturityOvernightAndContinuousMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaturityUpTo30DaysMember" xlink:label="MaturityUpTo30DaysMember" xlink:title="MaturityUpTo30DaysMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:to="MaturityUpTo30DaysMember" xlink:title="definition: AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain to MaturityUpTo30DaysMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Maturity30To90DaysMember" xlink:label="Maturity30To90DaysMember" xlink:title="Maturity30To90DaysMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:to="Maturity30To90DaysMember" xlink:title="definition: AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain to Maturity30To90DaysMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaturityOver90DaysMember" xlink:label="MaturityOver90DaysMember" xlink:title="MaturityOver90DaysMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain" xlink:to="MaturityOver90DaysMember" xlink:title="definition: AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain to MaturityOver90DaysMember" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="FinancialInstrumentAxis" xlink:title="FinancialInstrumentAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable" xlink:to="FinancialInstrumentAxis" xlink:title="definition: TransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable to FinancialInstrumentAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:title="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FinancialInstrumentAxis" xlink:to="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:title="definition: FinancialInstrumentAxis to TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2" xlink:title="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FinancialInstrumentAxis" xlink:to="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2" xlink:title="definition: FinancialInstrumentAxis to TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="USGovernmentAgenciesDebtSecuritiesMember" xlink:title="USGovernmentAgenciesDebtSecuritiesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="USGovernmentAgenciesDebtSecuritiesMember" xlink:title="definition: TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to USGovernmentAgenciesDebtSecuritiesMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/EmployeeBenefitPlansNoncontributoryDefinedBenefitPensionPlanDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="DefinedBenefitPlanDisclosureLineItems" xlink:title="DefinedBenefitPlanDisclosureLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:title="DefinedBenefitPlanNetPeriodicBenefitCostAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to DefinedBenefitPlanNetPeriodicBenefitCostAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="DefinedBenefitPlanContributionsByEmployer" xlink:title="DefinedBenefitPlanContributionsByEmployer" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="DefinedBenefitPlanContributionsByEmployer" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to DefinedBenefitPlanContributionsByEmployer" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="DefinedBenefitPlanServiceCost" xlink:title="DefinedBenefitPlanServiceCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="DefinedBenefitPlanServiceCost" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to DefinedBenefitPlanServiceCost" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="DefinedBenefitPlanInterestCost" xlink:title="DefinedBenefitPlanInterestCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="DefinedBenefitPlanInterestCost" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to DefinedBenefitPlanInterestCost" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:title="DefinedBenefitPlanExpectedReturnOnPlanAssets" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to DefinedBenefitPlanExpectedReturnOnPlanAssets" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_DefinedBenefitPlanNetAmortizationAndDeferral" xlink:label="DefinedBenefitPlanNetAmortizationAndDeferral" xlink:title="DefinedBenefitPlanNetAmortizationAndDeferral" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="DefinedBenefitPlanNetAmortizationAndDeferral" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to DefinedBenefitPlanNetAmortizationAndDeferral" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="DefinedBenefitPlanNetPeriodicBenefitCost" xlink:title="DefinedBenefitPlanNetPeriodicBenefitCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="DefinedBenefitPlanNetPeriodicBenefitCost" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to DefinedBenefitPlanNetPeriodicBenefitCost" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:title="ScheduleOfDefinedBenefitPlansDisclosuresTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:title="definition: DefinedBenefitPlanDisclosureLineItems to ScheduleOfDefinedBenefitPlansDisclosuresTable" order="8.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="RetirementPlanTypeAxis" xlink:title="RetirementPlanTypeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="RetirementPlanTypeAxis" xlink:title="definition: ScheduleOfDefinedBenefitPlansDisclosuresTable to RetirementPlanTypeAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="RetirementPlanTypeDomain" xlink:title="RetirementPlanTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RetirementPlanTypeAxis" xlink:to="RetirementPlanTypeDomain" xlink:title="definition: RetirementPlanTypeAxis to RetirementPlanTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="RetirementPlanTypeDomain_2" xlink:title="RetirementPlanTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RetirementPlanTypeAxis" xlink:to="RetirementPlanTypeDomain_2" xlink:title="definition: RetirementPlanTypeAxis to RetirementPlanTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="PensionPlansDefinedBenefitMember" xlink:title="PensionPlansDefinedBenefitMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RetirementPlanTypeDomain" xlink:to="PensionPlansDefinedBenefitMember" xlink:title="definition: RetirementPlanTypeDomain to PensionPlansDefinedBenefitMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="IncomeStatementLocationAxis" xlink:title="IncomeStatementLocationAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="IncomeStatementLocationAxis" xlink:title="definition: ScheduleOfDefinedBenefitPlansDisclosuresTable to IncomeStatementLocationAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="IncomeStatementLocationDomain" xlink:title="IncomeStatementLocationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="IncomeStatementLocationAxis" xlink:to="IncomeStatementLocationDomain" xlink:title="definition: IncomeStatementLocationAxis to IncomeStatementLocationDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="IncomeStatementLocationDomain_2" xlink:title="IncomeStatementLocationDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="IncomeStatementLocationAxis" xlink:to="IncomeStatementLocationDomain_2" xlink:title="definition: IncomeStatementLocationAxis to IncomeStatementLocationDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_SalaryAndEmployeeBenefitsMember" xlink:label="SalaryAndEmployeeBenefitsMember" xlink:title="SalaryAndEmployeeBenefitsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IncomeStatementLocationDomain" xlink:to="SalaryAndEmployeeBenefitsMember" xlink:title="definition: IncomeStatementLocationDomain to SalaryAndEmployeeBenefitsMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherExpensesMember" xlink:label="OtherExpensesMember" xlink:title="OtherExpensesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IncomeStatementLocationDomain" xlink:to="OtherExpensesMember" xlink:title="definition: IncomeStatementLocationDomain to OtherExpensesMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/EmployeeBenefitPlansRestrictedStockPlanDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredCompensationArrangementsAbstract" xlink:label="DeferredCompensationArrangementsAbstract" xlink:title="DeferredCompensationArrangementsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="DeferredCompensationArrangementsAbstract" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to DeferredCompensationArrangementsAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="ShareBasedCompensation" xlink:title="ShareBasedCompensation" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensation" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensation" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:label="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:title="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:title="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" order="15.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" order="16.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="definition: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" order="17.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="AwardTypeAxis" xlink:title="AwardTypeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="AwardTypeAxis" xlink:title="definition: ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to AwardTypeAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="AwardTypeAxis" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="definition: AwardTypeAxis to ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="AwardTypeAxis" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2" xlink:title="definition: AwardTypeAxis to ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="RestrictedStockMember" xlink:title="RestrictedStockMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="RestrictedStockMember" xlink:title="definition: ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain to RestrictedStockMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/AccumulatedComprehensiveLossDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:title="AccumulatedOtherComprehensiveIncomeLossLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:label="AOCIAttributableToParentNetOfTaxRollForward" xlink:title="AOCIAttributableToParentNetOfTaxRollForward" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="AOCIAttributableToParentNetOfTaxRollForward" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossLineItems to AOCIAttributableToParentNetOfTaxRollForward" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="StockholdersEquity" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossLineItems to StockholdersEquity" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:title="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossLineItems to CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:label="OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:title="OciBeforeReclassificationsNetOfTaxAttributableToParent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossLineItems to OciBeforeReclassificationsNetOfTaxAttributableToParent" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:label="ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:title="ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossLineItems to ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:title="OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossLineItems to OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="AccumulatedOtherComprehensiveIncomeLossTable" xlink:title="AccumulatedOtherComprehensiveIncomeLossTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="AccumulatedOtherComprehensiveIncomeLossTable" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossLineItems to AccumulatedOtherComprehensiveIncomeLossTable" order="7.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="StatementEquityComponentsAxis" xlink:title="definition: AccumulatedOtherComprehensiveIncomeLossTable to StatementEquityComponentsAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain_2" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain_2" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="AccumulatedOtherComprehensiveIncomeMember" xlink:title="AccumulatedOtherComprehensiveIncomeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AccumulatedOtherComprehensiveIncomeMember" xlink:title="definition: EquityComponentDomain to AccumulatedOtherComprehensiveIncomeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:title="AccumulatedNetUnrealizedInvestmentGainLossMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeMember" xlink:to="AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:title="definition: AccumulatedOtherComprehensiveIncomeMember to AccumulatedNetUnrealizedInvestmentGainLossMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:title="AccumulatedDefinedBenefitPlansAdjustmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AccumulatedOtherComprehensiveIncomeMember" xlink:to="AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:title="definition: AccumulatedOtherComprehensiveIncomeMember to AccumulatedDefinedBenefitPlansAdjustmentMember" order="2.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/AccumulatedComprehensiveLossReclassificationDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:label="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:title="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AOCIAttributableToParentAbstract" xlink:label="AOCIAttributableToParentAbstract" xlink:title="AOCIAttributableToParentAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:to="AOCIAttributableToParentAbstract" xlink:title="definition: ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems to AOCIAttributableToParentAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtAndEquitySecuritiesGainLoss" xlink:label="DebtAndEquitySecuritiesGainLoss" xlink:title="DebtAndEquitySecuritiesGainLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:to="DebtAndEquitySecuritiesGainLoss" xlink:title="definition: ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems to DebtAndEquitySecuritiesGainLoss" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherExpenses" xlink:label="OtherExpenses" xlink:title="OtherExpenses" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:to="OtherExpenses" xlink:title="definition: ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems to OtherExpenses" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:to="IncomeTaxExpenseBenefit" xlink:title="definition: ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems to IncomeTaxExpenseBenefit" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:to="NetIncomeLoss" xlink:title="definition: ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems to NetIncomeLoss" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:label="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:to="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:title="definition: ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems to ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" order="6.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:to="StatementEquityComponentsAxis" xlink:title="definition: ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable to StatementEquityComponentsAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain_2" xlink:title="EquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain_2" xlink:title="definition: StatementEquityComponentsAxis to EquityComponentDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:title="AccumulatedNetUnrealizedInvestmentGainLossMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:title="definition: EquityComponentDomain to AccumulatedNetUnrealizedInvestmentGainLossMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:title="AccumulatedDefinedBenefitPlansAdjustmentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EquityComponentDomain" xlink:to="AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:title="definition: EquityComponentDomain to AccumulatedDefinedBenefitPlansAdjustmentMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:label="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:to="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:title="definition: ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable to ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:to="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:title="definition: ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis to ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_2" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:to="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_2" xlink:title="definition: ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis to ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:label="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:title="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:to="ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:title="definition: ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain to ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" order="1.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/FairValueMeasurementsMeasuredOnRecurringAndNonrecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueNetAssetLiabilityAbstract" xlink:label="FairValueNetAssetLiabilityAbstract" xlink:title="FairValueNetAssetLiabilityAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="FairValueNetAssetLiabilityAbstract" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to FairValueNetAssetLiabilityAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisAbstract" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisAbstract" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisAbstract" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="AssetsFairValueDisclosure" xlink:title="AssetsFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="AssetsFairValueDisclosure" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to AssetsFairValueDisclosure" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeclosedAssets" xlink:label="ForeclosedAssets" xlink:title="ForeclosedAssets" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="ForeclosedAssets" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to ForeclosedAssets" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ImpairedLoansEstimatedSellingCost" xlink:label="ImpairedLoansEstimatedSellingCost" xlink:title="ImpairedLoansEstimatedSellingCost" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="ImpairedLoansEstimatedSellingCost" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to ImpairedLoansEstimatedSellingCost" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_EquitySecuritiesInFinancialInstitutionsFairValueDisclosure" xlink:label="EquitySecuritiesInFinancialInstitutionsFairValueDisclosure" xlink:title="EquitySecuritiesInFinancialInstitutionsFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="EquitySecuritiesInFinancialInstitutionsFairValueDisclosure" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to EquitySecuritiesInFinancialInstitutionsFairValueDisclosure" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAbstract" xlink:label="AvailableForSaleSecuritiesAbstract" xlink:title="AvailableForSaleSecuritiesAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="AvailableForSaleSecuritiesAbstract" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to AvailableForSaleSecuritiesAbstract" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_USAgencySecuritiesFairValueDisclosure" xlink:label="USAgencySecuritiesFairValueDisclosure" xlink:title="USAgencySecuritiesFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="USAgencySecuritiesFairValueDisclosure" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to USAgencySecuritiesFairValueDisclosure" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_USTreasuriesSecuritiesFairValueDislosure" xlink:label="USTreasuriesSecuritiesFairValueDislosure" xlink:title="USTreasuriesSecuritiesFairValueDislosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="USTreasuriesSecuritiesFairValueDislosure" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to USTreasuriesSecuritiesFairValueDislosure" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ObligationsOfStateAndPoliticalSubdivisionsFairValueDisclosure" xlink:label="ObligationsOfStateAndPoliticalSubdivisionsFairValueDisclosure" xlink:title="ObligationsOfStateAndPoliticalSubdivisionsFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="ObligationsOfStateAndPoliticalSubdivisionsFairValueDisclosure" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to ObligationsOfStateAndPoliticalSubdivisionsFairValueDisclosure" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_CorporateObligationsFairValueDisclosure" xlink:label="CorporateObligationsFairValueDisclosure" xlink:title="CorporateObligationsFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="CorporateObligationsFairValueDisclosure" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to CorporateObligationsFairValueDisclosure" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" xlink:label="MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" xlink:title="MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" order="13.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="FairValueByMeasurementFrequencyAxis" xlink:title="FairValueByMeasurementFrequencyAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="FairValueByMeasurementFrequencyAxis" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable to FairValueByMeasurementFrequencyAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="FairValueMeasurementFrequencyDomain" xlink:title="FairValueMeasurementFrequencyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByMeasurementFrequencyAxis" xlink:to="FairValueMeasurementFrequencyDomain" xlink:title="definition: FairValueByMeasurementFrequencyAxis to FairValueMeasurementFrequencyDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="FairValueMeasurementFrequencyDomain_2" xlink:title="FairValueMeasurementFrequencyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByMeasurementFrequencyAxis" xlink:to="FairValueMeasurementFrequencyDomain_2" xlink:title="definition: FairValueByMeasurementFrequencyAxis to FairValueMeasurementFrequencyDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="FairValueMeasurementsRecurringMember" xlink:title="FairValueMeasurementsRecurringMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementFrequencyDomain" xlink:to="FairValueMeasurementsRecurringMember" xlink:title="definition: FairValueMeasurementFrequencyDomain to FairValueMeasurementsRecurringMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="FairValueMeasurementsNonrecurringMember" xlink:title="FairValueMeasurementsNonrecurringMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementFrequencyDomain" xlink:to="FairValueMeasurementsNonrecurringMember" xlink:title="definition: FairValueMeasurementFrequencyDomain to FairValueMeasurementsNonrecurringMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="FairValueByFairValueHierarchyLevelAxis" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable to FairValueByFairValueHierarchyLevelAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="definition: FairValueByFairValueHierarchyLevelAxis to FairValueMeasurementsFairValueHierarchyDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain_2" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain_2" xlink:title="definition: FairValueByFairValueHierarchyLevelAxis to FairValueMeasurementsFairValueHierarchyDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel1Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel1Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel2Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel2Member" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel3Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel3Member" order="3.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/FairValueMeasurementsQuantitativeInformationDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsQuantitativeInformationAbstract" xlink:label="FairValueInputsQuantitativeInformationAbstract" xlink:title="FairValueInputsQuantitativeInformationAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="FairValueInputsQuantitativeInformationAbstract" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems to FairValueInputsQuantitativeInformationAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="AvailableForSaleSecuritiesDebtSecurities" xlink:title="AvailableForSaleSecuritiesDebtSecurities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="AvailableForSaleSecuritiesDebtSecurities" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems to AvailableForSaleSecuritiesDebtSecurities" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleMeasurementInput" xlink:label="DebtSecuritiesAvailableForSaleMeasurementInput" xlink:title="DebtSecuritiesAvailableForSaleMeasurementInput" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="DebtSecuritiesAvailableForSaleMeasurementInput" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems to DebtSecuritiesAvailableForSaleMeasurementInput" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_FairValueInputsHoldingPeriod" xlink:label="FairValueInputsHoldingPeriod" xlink:title="FairValueInputsHoldingPeriod" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="FairValueInputsHoldingPeriod" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems to FairValueInputsHoldingPeriod" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems to FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" order="5.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="FairValueByAssetClassAxis" xlink:title="FairValueByAssetClassAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="FairValueByAssetClassAxis" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable to FairValueByAssetClassAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:title="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByAssetClassAxis" xlink:to="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:title="definition: FairValueByAssetClassAxis to FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2" xlink:title="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByAssetClassAxis" xlink:to="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2" xlink:title="definition: FairValueByAssetClassAxis to FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_ImpairedLoansMember" xlink:label="ImpairedLoansMember" xlink:title="ImpairedLoansMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="ImpairedLoansMember" xlink:title="definition: FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain to ImpairedLoansMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_OtherRealEstateOwnedMember" xlink:label="OtherRealEstateOwnedMember" xlink:title="OtherRealEstateOwnedMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="OtherRealEstateOwnedMember" xlink:title="definition: FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain to OtherRealEstateOwnedMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationTechniqueAxis" xlink:label="ValuationTechniqueAxis" xlink:title="ValuationTechniqueAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="ValuationTechniqueAxis" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable to ValuationTechniqueAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationTechniqueDomain" xlink:label="ValuationTechniqueDomain" xlink:title="ValuationTechniqueDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ValuationTechniqueAxis" xlink:to="ValuationTechniqueDomain" xlink:title="definition: ValuationTechniqueAxis to ValuationTechniqueDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationTechniqueDomain" xlink:label="ValuationTechniqueDomain_2" xlink:title="ValuationTechniqueDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ValuationTechniqueAxis" xlink:to="ValuationTechniqueDomain_2" xlink:title="definition: ValuationTechniqueAxis to ValuationTechniqueDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeApproachValuationTechniqueMember" xlink:label="IncomeApproachValuationTechniqueMember" xlink:title="IncomeApproachValuationTechniqueMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ValuationTechniqueDomain" xlink:to="IncomeApproachValuationTechniqueMember" xlink:title="definition: ValuationTechniqueDomain to IncomeApproachValuationTechniqueMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_AppraisedCollateralValuesMember" xlink:label="AppraisedCollateralValuesMember" xlink:title="AppraisedCollateralValuesMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ValuationTechniqueDomain" xlink:to="AppraisedCollateralValuesMember" xlink:title="definition: ValuationTechniqueDomain to AppraisedCollateralValuesMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationTechniqueDiscountedCashFlowMember" xlink:label="ValuationTechniqueDiscountedCashFlowMember" xlink:title="ValuationTechniqueDiscountedCashFlowMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="IncomeApproachValuationTechniqueMember" xlink:to="ValuationTechniqueDiscountedCashFlowMember" xlink:title="definition: IncomeApproachValuationTechniqueMember to ValuationTechniqueDiscountedCashFlowMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputTypeAxis" xlink:label="MeasurementInputTypeAxis" xlink:title="MeasurementInputTypeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="MeasurementInputTypeAxis" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable to MeasurementInputTypeAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="MeasurementInputTypeDomain" xlink:title="MeasurementInputTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="MeasurementInputTypeAxis" xlink:to="MeasurementInputTypeDomain" xlink:title="definition: MeasurementInputTypeAxis to MeasurementInputTypeDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="MeasurementInputTypeDomain_2" xlink:title="MeasurementInputTypeDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="MeasurementInputTypeAxis" xlink:to="MeasurementInputTypeDomain_2" xlink:title="definition: MeasurementInputTypeAxis to MeasurementInputTypeDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputDiscountRateMember" xlink:label="MeasurementInputDiscountRateMember" xlink:title="MeasurementInputDiscountRateMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="MeasurementInputTypeDomain" xlink:to="MeasurementInputDiscountRateMember" xlink:title="definition: MeasurementInputTypeDomain to MeasurementInputDiscountRateMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputCostToSellMember" xlink:label="MeasurementInputCostToSellMember" xlink:title="MeasurementInputCostToSellMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="MeasurementInputTypeDomain" xlink:to="MeasurementInputCostToSellMember" xlink:title="definition: MeasurementInputTypeDomain to MeasurementInputCostToSellMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="RangeAxis" xlink:title="definition: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable to RangeAxis" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="RangeAxis" xlink:to="RangeMember" xlink:title="definition: RangeAxis to RangeMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="RangeMember_2" xlink:title="RangeMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="RangeAxis" xlink:to="RangeMember_2" xlink:title="definition: RangeAxis to RangeMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MinimumMember" xlink:title="definition: RangeMember to MinimumMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="MaximumMember" xlink:title="definition: RangeMember to MaximumMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_WeightedAverageMember" xlink:label="WeightedAverageMember" xlink:title="WeightedAverageMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RangeMember" xlink:to="WeightedAverageMember" xlink:title="definition: RangeMember to WeightedAverageMember" order="3.0" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://firstcitizensbank.com/role/FairValueMeasurementsByBalanceSheetGroupingDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:title="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:label="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:title="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:label="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:title="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepositsFairValueDisclosure" xlink:label="DepositsFairValueDisclosure" xlink:title="DepositsFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="DepositsFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to DepositsFairValueDisclosure" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="DebtInstrumentFairValue" xlink:title="DebtInstrumentFairValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="DebtInstrumentFairValue" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to DebtInstrumentFairValue" order="4.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccruedLiabilitiesFairValueDisclosure" xlink:label="AccruedLiabilitiesFairValueDisclosure" xlink:title="AccruedLiabilitiesFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="AccruedLiabilitiesFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to AccruedLiabilitiesFairValueDisclosure" order="5.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="CashAndCashEquivalentsFairValueDisclosure" xlink:title="CashAndCashEquivalentsFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="CashAndCashEquivalentsFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to CashAndCashEquivalentsFairValueDisclosure" order="6.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CertificatesOfDepositAtCarryingValue" xlink:label="CertificatesOfDepositAtCarryingValue" xlink:title="CertificatesOfDepositAtCarryingValue" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="CertificatesOfDepositAtCarryingValue" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to CertificatesOfDepositAtCarryingValue" order="7.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesFvNi" xlink:label="EquitySecuritiesFvNi" xlink:title="EquitySecuritiesFvNi" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="EquitySecuritiesFvNi" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to EquitySecuritiesFvNi" order="8.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="AvailableForSaleSecurities" xlink:title="AvailableForSaleSecurities" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="AvailableForSaleSecurities" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to AvailableForSaleSecurities" order="9.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansHeldForSaleFairValueDisclosure" xlink:label="LoansHeldForSaleFairValueDisclosure" xlink:title="LoansHeldForSaleFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="LoansHeldForSaleFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to LoansHeldForSaleFairValueDisclosure" order="10.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansReceivableFairValueDisclosure" xlink:label="LoansReceivableFairValueDisclosure" xlink:title="LoansReceivableFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="LoansReceivableFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to LoansReceivableFairValueDisclosure" order="11.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashSurrenderValueFairValueDisclosure" xlink:label="CashSurrenderValueFairValueDisclosure" xlink:title="CashSurrenderValueFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="CashSurrenderValueFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to CashSurrenderValueFairValueDisclosure" order="12.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure" xlink:label="InvestmentInFederalHomeLoanBankStockFairValueDisclosure" xlink:title="InvestmentInFederalHomeLoanBankStockFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="InvestmentInFederalHomeLoanBankStockFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to InvestmentInFederalHomeLoanBankStockFairValueDisclosure" order="13.0" />
    <link:loc xlink:type="locator" xlink:href="czfs-20180930.xsd#czfs_InterestReceivableFairValueDisclosure" xlink:label="InterestReceivableFairValueDisclosure" xlink:title="InterestReceivableFairValueDisclosure" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="InterestReceivableFairValueDisclosure" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to InterestReceivableFairValueDisclosure" order="14.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="FairValueByBalanceSheetGroupingTable" xlink:title="FairValueByBalanceSheetGroupingTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:to="FairValueByBalanceSheetGroupingTable" xlink:title="definition: FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems to FairValueByBalanceSheetGroupingTable" order="15.0" t1:closed="true" t1:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="FairValueByMeasurementBasisAxis" xlink:title="FairValueByMeasurementBasisAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueByBalanceSheetGroupingTable" xlink:to="FairValueByMeasurementBasisAxis" xlink:title="definition: FairValueByBalanceSheetGroupingTable to FairValueByMeasurementBasisAxis" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="FairValueDisclosureItemAmountsDomain" xlink:title="FairValueDisclosureItemAmountsDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByMeasurementBasisAxis" xlink:to="FairValueDisclosureItemAmountsDomain" xlink:title="definition: FairValueByMeasurementBasisAxis to FairValueDisclosureItemAmountsDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="PortionAtFairValueFairValueDisclosureMember" xlink:title="PortionAtFairValueFairValueDisclosureMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueDisclosureItemAmountsDomain" xlink:to="PortionAtFairValueFairValueDisclosureMember" xlink:title="definition: FairValueDisclosureItemAmountsDomain to PortionAtFairValueFairValueDisclosureMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="PortionAtFairValueFairValueDisclosureMember_2" xlink:title="PortionAtFairValueFairValueDisclosureMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByMeasurementBasisAxis" xlink:to="PortionAtFairValueFairValueDisclosureMember_2" xlink:title="definition: FairValueByMeasurementBasisAxis to PortionAtFairValueFairValueDisclosureMember_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="CarryingReportedAmountFairValueDisclosureMember" xlink:title="CarryingReportedAmountFairValueDisclosureMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueDisclosureItemAmountsDomain" xlink:to="CarryingReportedAmountFairValueDisclosureMember" xlink:title="definition: FairValueDisclosureItemAmountsDomain to CarryingReportedAmountFairValueDisclosureMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="EstimateOfFairValueFairValueDisclosureMember" xlink:title="EstimateOfFairValueFairValueDisclosureMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueDisclosureItemAmountsDomain" xlink:to="EstimateOfFairValueFairValueDisclosureMember" xlink:title="definition: FairValueDisclosureItemAmountsDomain to EstimateOfFairValueFairValueDisclosureMember" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueByBalanceSheetGroupingTable" xlink:to="FairValueByFairValueHierarchyLevelAxis" xlink:title="definition: FairValueByBalanceSheetGroupingTable to FairValueByFairValueHierarchyLevelAxis" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="definition: FairValueByFairValueHierarchyLevelAxis to FairValueMeasurementsFairValueHierarchyDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain_2" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain_2" xlink:title="definition: FairValueByFairValueHierarchyLevelAxis to FairValueMeasurementsFairValueHierarchyDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel1Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel1Member" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel2Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel2Member" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel3Member" xlink:title="definition: FairValueMeasurementsFairValueHierarchyDomain to FairValueInputsLevel3Member" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="FairValueByMeasurementFrequencyAxis" xlink:title="FairValueByMeasurementFrequencyAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="FairValueByBalanceSheetGroupingTable" xlink:to="FairValueByMeasurementFrequencyAxis" xlink:title="definition: FairValueByBalanceSheetGroupingTable to FairValueByMeasurementFrequencyAxis" order="3.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="FairValueMeasurementFrequencyDomain" xlink:title="FairValueMeasurementFrequencyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="FairValueByMeasurementFrequencyAxis" xlink:to="FairValueMeasurementFrequencyDomain" xlink:title="definition: FairValueByMeasurementFrequencyAxis to FairValueMeasurementFrequencyDomain" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="FairValueMeasurementFrequencyDomain_2" xlink:title="FairValueMeasurementFrequencyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="FairValueByMeasurementFrequencyAxis" xlink:to="FairValueMeasurementFrequencyDomain_2" xlink:title="definition: FairValueByMeasurementFrequencyAxis to FairValueMeasurementFrequencyDomain_2" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="FairValueMeasurementsRecurringMember" xlink:title="FairValueMeasurementsRecurringMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="FairValueMeasurementFrequencyDomain" xlink:to="FairValueMeasurementsRecurringMember" xlink:title="definition: FairValueMeasurementFrequencyDomain to FairValueMeasurementsRecurringMember" order="1.0" />
  </link:definitionLink>
</link:linkbase>
