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    <link:label id="lab_us-gaap_PreferredStockMember_1e4db196-535f-41a7-a3e5-b920375867f9_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Preferred Stock [Member]</link:label>
    <link:label id="lab_us-gaap_PreferredStockMember_label_en-US" xlink:label="lab_us-gaap_PreferredStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Preferred Stock [Member]</link:label>
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    <link:label id="lab_dei_SecurityExchangeName_6e2b2101-572d-4dfa-9ccd-09c7099493fd_terseLabel_en-US" xlink:label="lab_dei_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Security Exchange Name</link:label>
    <link:label id="lab_dei_SecurityExchangeName_label_en-US" xlink:label="lab_dei_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Security Exchange Name</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_628c11f6-45ca-4eb5-881d-5882cd866fca_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Proceeds from issuance of long-term debt</link:label>
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    <link:label id="lab_us-gaap_MaturityOvernightMember_64d6752a-7415-4668-b027-dd2d3dec7b0b_terseLabel_en-US" xlink:label="lab_us-gaap_MaturityOvernightMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maturity Overnight [Member]</link:label>
    <link:label id="lab_us-gaap_MaturityOvernightMember_label_en-US" xlink:label="lab_us-gaap_MaturityOvernightMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maturity Overnight [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaturityOvernightMember" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MaturityOvernightMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaturityOvernightMember" xlink:to="lab_us-gaap_MaturityOvernightMember" xlink:type="arc" order="1"/>
    <link:label id="lab_prk_ConstructionRealEstateMortgageMember_fb5950b1-cd34-4e2d-a4e0-b2c78966d3b5_terseLabel_en-US" xlink:label="lab_prk_ConstructionRealEstateMortgageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Construction Real Estate - Mortgage [Member]</link:label>
    <link:label id="lab_prk_ConstructionRealEstateMortgageMember_label_en-US" xlink:label="lab_prk_ConstructionRealEstateMortgageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Construction Real Estate Mortgage [Member]</link:label>
    <link:label id="lab_prk_ConstructionRealEstateMortgageMember_documentation_en-US" xlink:label="lab_prk_ConstructionRealEstateMortgageMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Construction Real Estate, Mortgage [Member]</link:label>
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    <link:label id="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_b3cbc2c0-f45a-40d3-8bbc-1b00e1729e9f_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Business Acquisition, Pro Forma Earnings Per Share, Diluted</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Business Acquisition, Pro Forma Earnings Per Share, Diluted</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInDeposits_4d6bbc40-66af-4224-b220-4106095ec5dd_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeposits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net increase in deposits</link:label>
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    <link:label id="lab_prk_NonCashActivitiesAbstract_8790d0b1-4264-4025-98b6-e34206974825_terseLabel_en-US" xlink:label="lab_prk_NonCashActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Non cash activities:</link:label>
    <link:label id="lab_prk_NonCashActivitiesAbstract_label_en-US" xlink:label="lab_prk_NonCashActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Non cash activities [Abstract]</link:label>
    <link:label id="lab_prk_NonCashActivitiesAbstract_documentation_en-US" xlink:label="lab_prk_NonCashActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Non cash activities [Abstract]</link:label>
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    <link:label id="lab_us-gaap_PerformanceSharesMember_2027f4be-8a42-4f92-abd5-8e448f3fcd91_terseLabel_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Performance Shares [Member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PerformanceSharesMember" xlink:to="lab_us-gaap_PerformanceSharesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_88ece320-f144-4d91-b508-b2782fa3f71a_terseLabel_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Debt Securities, Available-for-sale, Realized Loss</link:label>
    <link:label id="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_label_en-US" xlink:label="lab_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Debt Securities, Available-for-sale, Realized Loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss"/>
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    <link:label id="lab_us-gaap_AssetsAbstract_e8a022da-913a-4edb-afc2-c028467da020_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Assets:</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax_cd0d7af3-6328-4e7f-bdc6-233f3a7ed453_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax</link:label>
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    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_876b979d-5d9f-4cd8-b333-686568d7e798_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Five</link:label>
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    <link:label id="lab_us-gaap_FinancialInstrumentAxis_b4b2e0c6-1e10-4993-b16f-b19125f819b0_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial Instrument [Axis]</link:label>
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    <link:label id="lab_us-gaap_TypeOfAdoptionMember_f2d3fc27-657e-4361-aae0-825ea578f28a_terseLabel_en-US" xlink:label="lab_us-gaap_TypeOfAdoptionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Type of Adoption [Domain]</link:label>
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    <link:label id="lab_prk_FinancingReceivableRecordedInvestmentNonperforming_06ac6045-3994-41a3-a6df-1b496517053b_totalLabel_en-US" xlink:label="lab_prk_FinancingReceivableRecordedInvestmentNonperforming" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total nonperforming loans</link:label>
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    <link:label id="lab_us-gaap_DerivativeAverageFixedInterestRate_c2b8af5f-b311-40f9-82fa-3ab7366233d5_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAverageFixedInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Derivative, Average Fixed Interest Rate</link:label>
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    <link:label id="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_1ccf43ee-1f57-4db1-b0df-a4573d175e70_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financing Receivable, Troubled Debt Restructurings [Domain]</link:label>
    <link:label id="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_label_en-US" xlink:label="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Class of Financing Receivable, Type of Borrower [Domain]</link:label>
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    <link:label id="lab_us-gaap_MortgagesMember_9d2e6136-db0c-4f38-bf2d-b47c690bacc0_terseLabel_en-US" xlink:label="lab_us-gaap_MortgagesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Mortgage Loans on Real Estate [Member]</link:label>
    <link:label id="lab_us-gaap_MortgagesMember_label_en-US" xlink:label="lab_us-gaap_MortgagesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Mortgages [Member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MortgagesMember" xlink:to="lab_us-gaap_MortgagesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LoansReceivableMember_042f632a-a10a-414f-8af5-0403a7a1e2ac_terseLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans Receivable [Member]</link:label>
    <link:label id="lab_us-gaap_LoansReceivableMember_e0c32c63-cca9-4215-8d72-1cfe3275c41d_verboseLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans [Member]</link:label>
    <link:label id="lab_us-gaap_LoansReceivableMember_label_en-US" xlink:label="lab_us-gaap_LoansReceivableMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans Receivable [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember"/>
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    <link:label id="lab_dei_EntityFilerCategory_fed979a8-8faa-4232-869a-56542ba14835_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Filer Category</link:label>
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    <link:label id="lab_us-gaap_CommonStockMember_4b48c5fe-22fc-4b4a-adcb-ade5eb570586_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Common Stock [Member]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember"/>
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    <link:label id="lab_srt_ProductsAndServicesDomain_4dc9b941-e358-4f09-bd8b-9c947ca5f045_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Product and Service [Domain]</link:label>
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    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_03055f2a-1e12-4759-b60b-7d4bac1a0475_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Nonaccrual loans</link:label>
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    <link:label id="lab_dei_EntityCentralIndexKey_779256cc-2c02-440c-9cef-3a985944fdf3_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Entity Central Index Key</link:label>
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    <link:label id="lab_prk_OtherRealEstateOwnedAbstract_b806bab2-38c8-4f5b-921e-73001396a77d_terseLabel_en-US" xlink:label="lab_prk_OtherRealEstateOwnedAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Real Estate Owned [Abstract]</link:label>
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    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_3e63bf31-8db1-4055-a78f-f841741bda01_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Debt Securities, Available-for-sale, Current</link:label>
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    <link:label id="lab_us-gaap_DerivativeInstrumentRiskAxis_1ffdb43a-4efc-464e-9d73-0ee2895b3166_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentRiskAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Derivative Instrument [Axis]</link:label>
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    <link:label id="lab_prk_AdditionalReservePandemicRisk_documentation_en-US" xlink:label="lab_prk_AdditionalReservePandemicRisk" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Additional Reserve Pandemic Risk</link:label>
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    <link:label id="lab_us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance_c35c6c12-f307-4230-a6c9-5bf8089ce3c9_periodStartLabel_en-US" xlink:label="lab_us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Valuation allowance, beginning of period</link:label>
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    <link:label id="lab_us-gaap_FederalReserveBankStock_28e10b51-aa4b-49a8-8fff-4196176b5f9a_terseLabel_en-US" xlink:label="lab_us-gaap_FederalReserveBankStock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Federal Reserve Bank Stock</link:label>
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    <link:label id="lab_prk_ScheduleofImpairedFinancingReceivablesAdditionalInformationLineItems_41106942-bbb9-4c92-8451-fdbadebf0149_terseLabel_en-US" xlink:label="lab_prk_ScheduleofImpairedFinancingReceivablesAdditionalInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Schedule of Impaired Financing Receivables Additional Information [Line Items]</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_495b4e78-66c3-4f03-8eb0-5cb72211bec1_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Unrealized net holding gain (loss) on debt securities available-for-sale, net of income tax effect of $55 and $(1,385) for the three months ended September 30, 2020 and 2019, respectively, and $7,109 and $4,864 for the nine months ended September 30, 2020 and 2019, respectively.</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
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    <link:label id="lab_prk_FinancingReceivablesCOVIDModificationsRecordedInvestmentDuringPeriod_55fa4094-3c1d-45c0-a90c-49235deeac9d_terseLabel_en-US" xlink:label="lab_prk_FinancingReceivablesCOVIDModificationsRecordedInvestmentDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financing Receivables, COVID Modifications, Recorded Investment, During Period</link:label>
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    <link:label id="lab_us-gaap_OtherAssetsFairValueDisclosure_0a5710f2-b24c-4288-a5ce-59cb4a74fe1b_netLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other loans</link:label>
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    <link:label id="lab_us-gaap_InterestExpense_0664e3b5-33e5-40dd-b2f4-07c41d7bef7e_totalLabel_en-US" xlink:label="lab_us-gaap_InterestExpense" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total interest expense</link:label>
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    <link:label id="lab_prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans_ba4bcfbe-64dc-4494-8131-1e8764f92f5a_terseLabel_en-US" xlink:label="lab_prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total ending allowance for loan losses balance as a percentage of loan balance</link:label>
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    <link:label id="lab_prk_HotelsRestaurantsStripShoppingTotalMember_2e82fc60-6dfe-4355-826f-1d5967c8d078_terseLabel_en-US" xlink:label="lab_prk_HotelsRestaurantsStripShoppingTotalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Hotels, Restaurants, Strip Shopping Total</link:label>
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    <link:label id="lab_srt_ProductOrServiceAxis_3ba2abd1-da5d-45d6-b390-9cdc7532dbfe_terseLabel_en-US" xlink:label="lab_srt_ProductOrServiceAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Product and Service [Axis]</link:label>
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    <link:label id="lab_us-gaap_InvestmentTypeAxis_c646838c-2d66-4a02-9734-0bf5e82fc51e_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Investment Type [Axis]</link:label>
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    <link:label id="lab_prk_Installmentotherserviceincome_0e4695a2-3229-43ef-868f-9b55295c8955_terseLabel_en-US" xlink:label="lab_prk_Installmentotherserviceincome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Installment</link:label>
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    <link:label id="lab_us-gaap_ValuationTechniqueAxis_d205c274-9f35-41d6-b8d2-cd5d90ee5cbb_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationTechniqueAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Valuation Approach and Technique [Axis]</link:label>
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_da355b26-c78e-4d1c-8916-eae332e9f03e_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Comprehensive Income Location [Domain]</link:label>
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    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_5bee5c9b-055c-4028-bdb0-1be73e6e010b_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Income available to common shareholders</link:label>
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    <link:label id="lab_sic_Z7000_b9f40ab3-3f4c-4cda-ac0d-987b9b8198a0_terseLabel_en-US" xlink:label="lab_sic_Z7000" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">7000 Hotels, Rooming Houses, Camps and Other Lodging Places</link:label>
    <link:label id="lab_sic_Z7000_label_en-US" xlink:label="lab_sic_Z7000" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">7000 Hotels, Rooming Houses, Camps and Other Lodging Places [Member]</link:label>
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    <link:label id="lab_prk_CommercialFinancialAndAgriculturalMember_e145b196-c676-4861-9713-1305378c34b6_terseLabel_en-US" xlink:label="lab_prk_CommercialFinancialAndAgriculturalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Commercial Financial And Agricultural [Member]</link:label>
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    <link:label id="lab_prk_ExpensetobepaidYearThreeDomain_ec7ca9ab-b63b-4bec-93db-512939b5022f_terseLabel_en-US" xlink:label="lab_prk_ExpensetobepaidYearThreeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Expense to be paid Year Three [Domain]</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfInvestmentsLineItems_f084e4db-1459-46c2-86cc-9a3d7cf41735_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInvestmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Schedule of Investments [Line Items]</link:label>
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    <link:label id="lab_us-gaap_NoninterestExpenseAbstract_f8e848d0-df54-4d83-ba33-4ffa41367c67_terseLabel_en-US" xlink:label="lab_us-gaap_NoninterestExpenseAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other expense:</link:label>
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    <link:label id="lab_prk_ResidentialRealEstateCommercialMember_f7ab3226-f2f9-4bb4-8a6b-6ee950e41fa6_terseLabel_en-US" xlink:label="lab_prk_ResidentialRealEstateCommercialMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Residential Real Estate Commercial [Member]</link:label>
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    <link:label id="lab_prk_StockIssuedDuringPeriodSharesWithheldForTaxTaxRestrictedStock_e7f3c579-2e82-46cd-acc4-bd739899d3d2_terseLabel_en-US" xlink:label="lab_prk_StockIssuedDuringPeriodSharesWithheldForTaxTaxRestrictedStock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Stock issued during period, shares, withheld for tax, tax restricted stock</link:label>
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    <link:label id="lab_prk_CashPaidInLieuOfFractionalSharesDividendReinvestmentPlan_8ad59695-812c-40e9-8164-6069c30c9eb8_negatedLabel_en-US" xlink:label="lab_prk_CashPaidInLieuOfFractionalSharesDividendReinvestmentPlan" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Cash payment for fractional shares in dividend reinvestment plan</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_7709805f-393d-4a07-9190-57a2371b2735_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
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    <link:label id="lab_us-gaap_OccupancyNet_4cfa8a2c-99b4-46c8-a613-c55e847561f7_terseLabel_en-US" xlink:label="lab_us-gaap_OccupancyNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Occupancy expense</link:label>
    <link:label id="lab_us-gaap_OccupancyNet_label_en-US" xlink:label="lab_us-gaap_OccupancyNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Occupancy, Net</link:label>
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    <link:label id="lab_prk_SBAPPPFeesReceived_bcd8ad1a-1c72-49eb-b14a-d1deb9191cea_terseLabel_en-US" xlink:label="lab_prk_SBAPPPFeesReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">SBA Fees received</link:label>
    <link:label id="lab_prk_SBAPPPFeesReceived_label_en-US" xlink:label="lab_prk_SBAPPPFeesReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">SBA PPP Fees received</link:label>
    <link:label id="lab_prk_SBAPPPFeesReceived_documentation_en-US" xlink:label="lab_prk_SBAPPPFeesReceived" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">SBA PPP Fees received</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_prk_SBAPPPFeesReceived" xlink:href="prk-20200930.xsd#prk_SBAPPPFeesReceived"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_prk_SBAPPPFeesReceived" xlink:to="lab_prk_SBAPPPFeesReceived" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_a1e0086c-fc3f-412c-9b48-6cf2f90f0a33_totalLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net loans</link:label>
    <link:label id="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans and Leases Receivable, Net Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:to="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_e39c7ba5-4d7c-45df-ba00-f3e3c436fbe9_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain" xlink:to="lab_us-gaap_LongtermDebtTypeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ShareBasedCompensation_35c0e99a-e118-4b61-b4e4-ac28a04878ec_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Share-based compensation expense</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Share-based Payment Arrangement, Noncash Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation" xlink:to="lab_us-gaap_ShareBasedCompensation" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_17476a05-8c63-4a0e-841d-53de565a281b_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net increase (decrease) in short-term borrowings</link:label>
    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Proceeds from (Repayments of) Short-term Debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:to="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MeasurementInputTypeAxis_5a1fc1b0-c23c-4613-8007-d8f65bbcd4dd_terseLabel_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Measurement Input Type [Axis]</link:label>
    <link:label id="lab_us-gaap_MeasurementInputTypeAxis_label_en-US" xlink:label="lab_us-gaap_MeasurementInputTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Measurement Input Type [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MeasurementInputTypeAxis" xlink:to="lab_us-gaap_MeasurementInputTypeAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems_4a549afd-be4f-4478-b9f3-6390c8908579_terseLabel_en-US" xlink:label="lab_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]</link:label>
    <link:label id="lab_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems_label_en-US" xlink:label="lab_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]</link:label>
    <link:label id="lab_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems_documentation_en-US" xlink:label="lab_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">[Line Items] for Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems" xlink:href="prk-20200930.xsd#prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems" xlink:to="lab_prk_ScheduleofAssetsRepossessedorForeclosedorloansinprocessofforeclosureLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_b6c302a7-a2e5-4313-b00a-21b42decc4c1_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other comprehensive loss before reclassifications</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Comprehensive Income (Loss), before Reclassifications, Net of Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:type="arc" order="1"/>
    <link:label id="lab_prk_GuardianSegmentMember_05827b24-5f86-4d5b-9649-ee2cdcfa88e8_terseLabel_en-US" xlink:label="lab_prk_GuardianSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">GFSC [Member]</link:label>
    <link:label id="lab_prk_GuardianSegmentMember_label_en-US" xlink:label="lab_prk_GuardianSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Guardian Segment [Member]</link:label>
    <link:label id="lab_prk_GuardianSegmentMember_documentation_en-US" xlink:label="lab_prk_GuardianSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Guardian Segment [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_prk_GuardianSegmentMember" xlink:href="prk-20200930.xsd#prk_GuardianSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_prk_GuardianSegmentMember" xlink:to="lab_prk_GuardianSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_MaturityOver90DaysMember_36a3f589-c927-4663-bd24-ca67e0fa3e99_terseLabel_en-US" xlink:label="lab_us-gaap_MaturityOver90DaysMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maturity over 90 days [Member]</link:label>
    <link:label id="lab_us-gaap_MaturityOver90DaysMember_label_en-US" xlink:label="lab_us-gaap_MaturityOver90DaysMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Maturity Greater than 90 Days [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaturityOver90DaysMember" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MaturityOver90DaysMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaturityOver90DaysMember" xlink:to="lab_us-gaap_MaturityOver90DaysMember" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LongTermDebt_ad5458be-2bf7-43bf-8a45-3c16b6190f62_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Long-term debt</link:label>
    <link:label id="lab_us-gaap_LongTermDebt_label_en-US" xlink:label="lab_us-gaap_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Long-term Debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt" xlink:to="lab_us-gaap_LongTermDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_7a8f15bf-8e92-4353-982c-a4fd7497baf1_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lessee, Operating Leases</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Lessee, Operating Leases [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeasesTextBlock" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeasesTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeasesTextBlock" xlink:to="lab_us-gaap_LesseeOperatingLeasesTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_prk_LoansHeldForSaleDisclosureTextBlockTextBlock_f17945b5-e9a2-4bc5-965f-4ad403355827_terseLabel_en-US" xlink:label="lab_prk_LoansHeldForSaleDisclosureTextBlockTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Mortgage Loans Held For Sale</link:label>
    <link:label id="lab_prk_LoansHeldForSaleDisclosureTextBlockTextBlock_label_en-US" xlink:label="lab_prk_LoansHeldForSaleDisclosureTextBlockTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans Held For Sale Disclosure [Text Block] [Text Block]</link:label>
    <link:label id="lab_prk_LoansHeldForSaleDisclosureTextBlockTextBlock_documentation_en-US" xlink:label="lab_prk_LoansHeldForSaleDisclosureTextBlockTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans Held For Sale Disclosure [Text Block] [Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_prk_LoansHeldForSaleDisclosureTextBlockTextBlock" xlink:href="prk-20200930.xsd#prk_LoansHeldForSaleDisclosureTextBlockTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_prk_LoansHeldForSaleDisclosureTextBlockTextBlock" xlink:to="lab_prk_LoansHeldForSaleDisclosureTextBlockTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_DerivativeAverageRemainingMaturity1_5ad4b288-931f-4303-bf3a-71271acb38f4_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAverageRemainingMaturity1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Derivative, Average Remaining Maturity</link:label>
    <link:label id="lab_us-gaap_DerivativeAverageRemainingMaturity1_label_en-US" xlink:label="lab_us-gaap_DerivativeAverageRemainingMaturity1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Derivative, Average Remaining Maturity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAverageRemainingMaturity1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAverageRemainingMaturity1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAverageRemainingMaturity1" xlink:to="lab_us-gaap_DerivativeAverageRemainingMaturity1" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_InterestExpenseBorrowingsAbstract_7e0d152a-1ebd-4451-af4f-aef4842f3d71_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseBorrowingsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest on borrowings:</link:label>
    <link:label id="lab_us-gaap_InterestExpenseBorrowingsAbstract_label_en-US" xlink:label="lab_us-gaap_InterestExpenseBorrowingsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Interest Expense, Borrowings [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseBorrowingsAbstract" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseBorrowingsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpenseBorrowingsAbstract" xlink:to="lab_us-gaap_InterestExpenseBorrowingsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock_fb2025b9-1e81-47dc-be0d-f1b05d6a80c7_terseLabel_en-US" xlink:label="lab_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Recorded Investment By Loan Grade</link:label>
    <link:label id="lab_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock_label_en-US" xlink:label="lab_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Schedule of Recorded Investment By Loan Grade [Table Text Block]</link:label>
    <link:label id="lab_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock_documentation_en-US" xlink:label="lab_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Schedule of Recorded Investment By Loan Grade [Table Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock" xlink:href="prk-20200930.xsd#prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock" xlink:to="lab_prk_ScheduleOfRecordedInvestmentByLoanGradeTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_Investments_2b355d28-d5bf-4240-8024-91898dcb6c71_totalLabel_en-US" xlink:label="lab_us-gaap_Investments" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total investment securities</link:label>
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    <link:label id="lab_us-gaap_NetIncomeLoss_f010fffd-6ded-4425-9a2c-2fcc9a34665b_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net income</link:label>
    <link:label id="lab_us-gaap_NetIncomeLoss_5c4fd4dd-7167-4728-8af9-b3de35eb9600_verboseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net Income</link:label>
    <link:label id="lab_us-gaap_NetIncomeLoss_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net Income (Loss) Attributable to Parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss"/>
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    <link:label id="lab_prk_PartialChargeOffsOnImpairedLoansCarriedAtFairValue_3ba7eff0-8ad7-4a0b-93da-0b988682b2ba_terseLabel_en-US" xlink:label="lab_prk_PartialChargeOffsOnImpairedLoansCarriedAtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Partial Charge-Offs On Impaired Loans carried at Fair Value</link:label>
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    <link:label id="lab_us-gaap_TradeNamesMember_8e739a9b-ff97-42c8-9e5b-33e9f8cad129_terseLabel_en-US" xlink:label="lab_us-gaap_TradeNamesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Trade Names [Member]</link:label>
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    <link:label id="lab_dei_CurrentFiscalYearEndDate_9b5a67a5-0f96-4ea2-a210-0f5d4b1cfd49_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Current Fiscal Year End Date</link:label>
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    <link:label id="lab_prk_ResidentialRealEstateMortgageMember_35a8962f-7d5b-4149-a96c-e6a33e977af2_terseLabel_en-US" xlink:label="lab_prk_ResidentialRealEstateMortgageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Residential Real Estate - Mortgage [Member]</link:label>
    <link:label id="lab_prk_ResidentialRealEstateMortgageMember_label_en-US" xlink:label="lab_prk_ResidentialRealEstateMortgageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Residential Real Estate Mortgage [Member]</link:label>
    <link:label id="lab_prk_ResidentialRealEstateMortgageMember_documentation_en-US" xlink:label="lab_prk_ResidentialRealEstateMortgageMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Residential Real Estate - Mortgage [Member]</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfCreditLossesForFinancingReceivablesCurrentTableTextBlock_1675754e-a786-42cf-8adb-4f7c15b55336_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCreditLossesForFinancingReceivablesCurrentTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Activity In The Allowance For Loan Losses</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCreditLossesForFinancingReceivablesCurrentTableTextBlock" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfCreditLossesForFinancingReceivablesCurrentTableTextBlock"/>
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    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_66857186-a917-4dfa-8d89-a06105a7262b_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
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    <link:label id="lab_prk_OtherInvestmentSecuritiesAbstract_54597256-56b4-4ca3-9496-9c3e09476d46_terseLabel_en-US" xlink:label="lab_prk_OtherInvestmentSecuritiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Investment Securities [Abstract]</link:label>
    <link:label id="lab_prk_OtherInvestmentSecuritiesAbstract_label_en-US" xlink:label="lab_prk_OtherInvestmentSecuritiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Investment Securities [Abstract]</link:label>
    <link:label id="lab_prk_OtherInvestmentSecuritiesAbstract_documentation_en-US" xlink:label="lab_prk_OtherInvestmentSecuritiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Other Investment Securities</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_prk_OtherInvestmentSecuritiesAbstract" xlink:to="lab_prk_OtherInvestmentSecuritiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_us-gaap_LoansReceivableFairValueDisclosure_90933a88-8bd0-405a-96ea-4a436c4aa289_terseLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans Receivable, Fair Value Disclosure</link:label>
    <link:label id="lab_us-gaap_LoansReceivableFairValueDisclosure_6822d05c-b5d8-4154-a4e3-ff826f2afc43_totalLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans receivable, net</link:label>
    <link:label id="lab_us-gaap_LoansReceivableFairValueDisclosure_label_en-US" xlink:label="lab_us-gaap_LoansReceivableFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans Receivable, Fair Value Disclosure</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableFairValueDisclosure" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableFairValueDisclosure"/>
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    <link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_30481378-ce91-4424-977f-daa284c81324_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Allowance for loan losses collectively evaluated for impairment</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment"/>
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    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_3c260d88-806c-4711-9969-79c1b4fee111_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Supplemental disclosures of cash flow information:</link:label>
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    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_fdee0e4c-f82e-438f-88f5-9f791c131d6f_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
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    <link:label id="lab_prk_ImpairedFinancingReceivableloansnotheldatFairValueRecordedInvestment_267c9311-c084-4cc5-b759-2fa2b0180fb9_terseLabel_en-US" xlink:label="lab_prk_ImpairedFinancingReceivableloansnotheldatFairValueRecordedInvestment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment</link:label>
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    <link:label id="lab_prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment_18c59752-8615-43ed-accc-f4e36764c6d4_terseLabel_en-US" xlink:label="lab_prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Recorded investment collectively evaluated for impairment</link:label>
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    <link:label id="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_9cb8eb01-96de-4ca4-a435-78ba49fbeb05_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loan balance</link:label>
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