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    <link:label id="lab_fnlc_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRateAdjustmentFactor_1E7CEB98F30FE36DCDC98901F10B8B11_terseLabel_en-US" xlink:label="lab_fnlc_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRateAdjustmentFactor_1E7CEB98F30FE36DCDC98901F10B8B11" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount rate adjustment rate (as a percentage)</link:label>
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    <link:label id="lab_fnlc_ResidentialMortgageLoansServicedForOthersOutstandingPrincipal_C63729EEEDB9A2655B3D8901F10B0002_terseLabel_en-US" xlink:label="lab_fnlc_ResidentialMortgageLoansServicedForOthersOutstandingPrincipal_C63729EEEDB9A2655B3D8901F10B0002" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Residential mortgage loans serviced for others, principal</link:label>
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    <link:label id="lab_us-gaap_FinancingReceivablePortfolioSegmentAxis_61AB3AC0D5A265F2B2B8174DF06B8D6A_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivablePortfolioSegmentAxis_85EFFFA02A6F57F5A4AD088FF9C781FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable Portfolio Segment [Axis]</link:label>
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    <link:label id="lab_fnlc_MunicipalPortfolioMember_43DF3472E2DA872CD220174DF06B147A_verboseLabel_en-US" xlink:label="lab_fnlc_MunicipalPortfolioMember_AA95D51EBEF158BA8602F0DEF6B7F142" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Municipal</link:label>
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    <link:label id="lab_us-gaap_ResidentialPortfolioSegmentMember_3C904DD1D86B78B85CC1174DF06CEDD6_verboseLabel_en-US" xlink:label="lab_us-gaap_ResidentialPortfolioSegmentMember_613F8EF17C9F56A692F34CA382BD10C9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Residential</link:label>
    <link:label id="lab_us-gaap_ResidentialPortfolioSegmentMember_3C904DD1D86B78B85CC1174DF06CEDD6_label_en-US" xlink:label="lab_us-gaap_ResidentialPortfolioSegmentMember_613F8EF17C9F56A692F34CA382BD10C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Residential Portfolio Segment [Member]</link:label>
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    <link:label id="lab_fnlc_HomeEquityLIneofCreditPortfolioMember_7796D3AFAF1A178E5506174DF06C7C4D_verboseLabel_en-US" xlink:label="lab_fnlc_HomeEquityLIneofCreditPortfolioMember_9E4DE574724951EA92BFEB0CA03601BA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Home equity line of credit</link:label>
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    <link:label id="lab_us-gaap_ConsumerPortfolioSegmentMember_2BA95F9804B8A0D595F3174DF06C8419_verboseLabel_en-US" xlink:label="lab_us-gaap_ConsumerPortfolioSegmentMember_C8DD1C44963D55059214F1EEC899B540" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Consumer</link:label>
    <link:label id="lab_us-gaap_ConsumerPortfolioSegmentMember_2BA95F9804B8A0D595F3174DF06C8419_label_en-US" xlink:label="lab_us-gaap_ConsumerPortfolioSegmentMember_C8DD1C44963D55059214F1EEC899B540" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consumer Portfolio Segment [Member]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_A4DD9CE2765C592DB19A3EC5065067D4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_52651EFCBA573AD638F4174DF06CDB4B_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_6615C1865CD354948FB2BD0C03E93C19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing Receivable Allowance [Domain]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_6615C1865CD354948FB2BD0C03E93C19" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RealEstateLoanMember_3D0014CC782B800101A4174DF06D5664_verboseLabel_en-US" xlink:label="lab_us-gaap_RealEstateLoanMember_B6EC1A9578D054FD96BC7900D8727CEF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Real estate</link:label>
    <link:label id="lab_us-gaap_RealEstateLoanMember_3D0014CC782B800101A4174DF06D5664_label_en-US" xlink:label="lab_us-gaap_RealEstateLoanMember_B6EC1A9578D054FD96BC7900D8727CEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Loan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateLoanMember" xlink:label="loc_us-gaap_RealEstateLoanMember_B6EC1A9578D054FD96BC7900D8727CEF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ConstructionLoansMember_E12F9EB1F55B84F8B6D3174DF06DE4AF_terseLabel_en-US" xlink:label="lab_us-gaap_ConstructionLoansMember_4011EFF8B07F5E668E8D1E4EF13B93A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Construction</link:label>
    <link:label id="lab_us-gaap_ConstructionLoansMember_E12F9EB1F55B84F8B6D3174DF06DE4AF_label_en-US" xlink:label="lab_us-gaap_ConstructionLoansMember_4011EFF8B07F5E668E8D1E4EF13B93A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction Loans [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionLoansMember" xlink:label="loc_us-gaap_ConstructionLoansMember_4011EFF8B07F5E668E8D1E4EF13B93A3" xlink:type="locator" />
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    <link:label id="lab_fnlc_OtherLoansMember_CE372668FB716785735D174DF06D0012_verboseLabel_en-US" xlink:label="lab_fnlc_OtherLoansMember_F3A9A7CEBDBD512EA8610FB299EE86A0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_fnlc_OtherLoansMember_CE372668FB716785735D174DF06D0012_label_en-US" xlink:label="lab_fnlc_OtherLoansMember_F3A9A7CEBDBD512EA8610FB299EE86A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Loans [Member]</link:label>
    <link:label id="lab_fnlc_OtherLoansMember_CE372668FB716785735D174DF06D0012_documentation_en-US" xlink:label="lab_fnlc_OtherLoansMember_F3A9A7CEBDBD512EA8610FB299EE86A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Loans</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_OtherLoansMember" xlink:label="loc_fnlc_OtherLoansMember_F3A9A7CEBDBD512EA8610FB299EE86A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_OtherLoansMember_F3A9A7CEBDBD512EA8610FB299EE86A0" xlink:to="lab_fnlc_OtherLoansMember_F3A9A7CEBDBD512EA8610FB299EE86A0" xlink:type="arc" />
    <link:label id="lab_fnlc_TermLoanMember_44904D3BA5EBFD8F275A174DF06DBA54_verboseLabel_en-US" xlink:label="lab_fnlc_TermLoanMember_0AE708883CCC5047B7961E6474364939" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Term</link:label>
    <link:label id="lab_fnlc_TermLoanMember_44904D3BA5EBFD8F275A174DF06DBA54_label_en-US" xlink:label="lab_fnlc_TermLoanMember_0AE708883CCC5047B7961E6474364939" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Term Loan [Member]</link:label>
    <link:label id="lab_fnlc_TermLoanMember_44904D3BA5EBFD8F275A174DF06DBA54_documentation_en-US" xlink:label="lab_fnlc_TermLoanMember_0AE708883CCC5047B7961E6474364939" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The catagory of loans which are designated to individuals for a residence that typically includes traditional amortizing home mortgages.</link:label>
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    <link:label id="lab_us-gaap_InternalCreditAssessmentAxis_60BFF6C3C16A22CB4DCE174DF0132E43_label_en-US" xlink:label="lab_us-gaap_InternalCreditAssessmentAxis_0CC8E27E0DA45908BA11040164330CBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InternalCreditAssessmentAxis" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_0CC8E27E0DA45908BA11040164330CBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_0CC8E27E0DA45908BA11040164330CBB" xlink:to="lab_us-gaap_InternalCreditAssessmentAxis_0CC8E27E0DA45908BA11040164330CBB" xlink:type="arc" />
    <link:label id="lab_us-gaap_InternalCreditAssessmentDomain_9285716A8D3EEC453DB5174DF01448B8_terseLabel_en-US" xlink:label="lab_us-gaap_InternalCreditAssessmentDomain_C54F7FD4F5DE541D9E565B5F97F027BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Domain]</link:label>
    <link:label id="lab_us-gaap_InternalCreditAssessmentDomain_9285716A8D3EEC453DB5174DF01448B8_label_en-US" xlink:label="lab_us-gaap_InternalCreditAssessmentDomain_C54F7FD4F5DE541D9E565B5F97F027BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Internal Credit Assessment [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InternalCreditAssessmentDomain" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_C54F7FD4F5DE541D9E565B5F97F027BA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_C54F7FD4F5DE541D9E565B5F97F027BA" xlink:to="lab_us-gaap_InternalCreditAssessmentDomain_C54F7FD4F5DE541D9E565B5F97F027BA" xlink:type="arc" />
    <link:label id="lab_fnlc_Strong1Member_77E5B48243BC6086F44B174DF0149AFD_terseLabel_en-US" xlink:label="lab_fnlc_Strong1Member_546B6EC81ACE5AF3BEC6B56648E7E25D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">1 Strong</link:label>
    <link:label id="lab_fnlc_Strong1Member_77E5B48243BC6086F44B174DF0149AFD_label_en-US" xlink:label="lab_fnlc_Strong1Member_546B6EC81ACE5AF3BEC6B56648E7E25D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strong 1 [Member]</link:label>
    <link:label id="lab_fnlc_Strong1Member_77E5B48243BC6086F44B174DF0149AFD_documentation_en-US" xlink:label="lab_fnlc_Strong1Member_546B6EC81ACE5AF3BEC6B56648E7E25D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit quality indicators that are developed and used internally by the company-level 1.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_Strong1Member" xlink:label="loc_fnlc_Strong1Member_546B6EC81ACE5AF3BEC6B56648E7E25D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_Strong1Member_546B6EC81ACE5AF3BEC6B56648E7E25D" xlink:to="lab_fnlc_Strong1Member_546B6EC81ACE5AF3BEC6B56648E7E25D" xlink:type="arc" />
    <link:label id="lab_fnlc_AboveAverage2Member_95DBB8E6215307C70E0E174DF0146704_terseLabel_en-US" xlink:label="lab_fnlc_AboveAverage2Member_B614416C5E265E5FA332250795C3226D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2 Above Average</link:label>
    <link:label id="lab_fnlc_AboveAverage2Member_95DBB8E6215307C70E0E174DF0146704_label_en-US" xlink:label="lab_fnlc_AboveAverage2Member_B614416C5E265E5FA332250795C3226D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Above Average 2 [Member]</link:label>
    <link:label id="lab_fnlc_AboveAverage2Member_95DBB8E6215307C70E0E174DF0146704_documentation_en-US" xlink:label="lab_fnlc_AboveAverage2Member_B614416C5E265E5FA332250795C3226D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit quality indicators that are developed and used internally by the company-level 2.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_AboveAverage2Member" xlink:label="loc_fnlc_AboveAverage2Member_B614416C5E265E5FA332250795C3226D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_AboveAverage2Member_B614416C5E265E5FA332250795C3226D" xlink:to="lab_fnlc_AboveAverage2Member_B614416C5E265E5FA332250795C3226D" xlink:type="arc" />
    <link:label id="lab_fnlc_Satisfactory3Member_DCAF674EBAC6FAFAE616174DF014FAFF_terseLabel_en-US" xlink:label="lab_fnlc_Satisfactory3Member_17EDEC879E045EA7A6E57E53121B01FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3 Satisfactory</link:label>
    <link:label id="lab_fnlc_Satisfactory3Member_DCAF674EBAC6FAFAE616174DF014FAFF_label_en-US" xlink:label="lab_fnlc_Satisfactory3Member_17EDEC879E045EA7A6E57E53121B01FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Satisfactory 3 [Member]</link:label>
    <link:label id="lab_fnlc_Satisfactory3Member_DCAF674EBAC6FAFAE616174DF014FAFF_documentation_en-US" xlink:label="lab_fnlc_Satisfactory3Member_17EDEC879E045EA7A6E57E53121B01FD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit quality indicators that are developed and used internally by the company-level 3.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_Satisfactory3Member" xlink:label="loc_fnlc_Satisfactory3Member_17EDEC879E045EA7A6E57E53121B01FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_Satisfactory3Member_17EDEC879E045EA7A6E57E53121B01FD" xlink:to="lab_fnlc_Satisfactory3Member_17EDEC879E045EA7A6E57E53121B01FD" xlink:type="arc" />
    <link:label id="lab_fnlc_Average4Member_EEBCEB9228CC974589CD174DF015A6AB_terseLabel_en-US" xlink:label="lab_fnlc_Average4Member_E848923F3649536CBCAA29A361BF58BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4 Average</link:label>
    <link:label id="lab_fnlc_Average4Member_EEBCEB9228CC974589CD174DF015A6AB_label_en-US" xlink:label="lab_fnlc_Average4Member_E848923F3649536CBCAA29A361BF58BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average 4 [Member]</link:label>
    <link:label id="lab_fnlc_Average4Member_EEBCEB9228CC974589CD174DF015A6AB_documentation_en-US" xlink:label="lab_fnlc_Average4Member_E848923F3649536CBCAA29A361BF58BC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit quality indicators that are developed and used internally by the company-level 4.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_Average4Member" xlink:label="loc_fnlc_Average4Member_E848923F3649536CBCAA29A361BF58BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_Average4Member_E848923F3649536CBCAA29A361BF58BC" xlink:to="lab_fnlc_Average4Member_E848923F3649536CBCAA29A361BF58BC" xlink:type="arc" />
    <link:label id="lab_fnlc_Watch5Member_88CDAEFC5D637E4C3343174DF015AE56_terseLabel_en-US" xlink:label="lab_fnlc_Watch5Member_3230EACBE6A55A4E926318CE09B9EF3A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5 Watch</link:label>
    <link:label id="lab_fnlc_Watch5Member_88CDAEFC5D637E4C3343174DF015AE56_label_en-US" xlink:label="lab_fnlc_Watch5Member_3230EACBE6A55A4E926318CE09B9EF3A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Watch 5 [Member]</link:label>
    <link:label id="lab_fnlc_Watch5Member_88CDAEFC5D637E4C3343174DF015AE56_documentation_en-US" xlink:label="lab_fnlc_Watch5Member_3230EACBE6A55A4E926318CE09B9EF3A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit quality indicators that are developed and used internally by the company-level 5.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_Watch5Member" xlink:label="loc_fnlc_Watch5Member_3230EACBE6A55A4E926318CE09B9EF3A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_Watch5Member_3230EACBE6A55A4E926318CE09B9EF3A" xlink:to="lab_fnlc_Watch5Member_3230EACBE6A55A4E926318CE09B9EF3A" xlink:type="arc" />
    <link:label id="lab_fnlc_Oaem6Member_A3F6751E9572CBACB626174DF015FD35_terseLabel_en-US" xlink:label="lab_fnlc_Oaem6Member_FCD9B2D1034C5501B7A0B0FDF024D121" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6 OAEM</link:label>
    <link:label id="lab_fnlc_Oaem6Member_A3F6751E9572CBACB626174DF015FD35_label_en-US" xlink:label="lab_fnlc_Oaem6Member_FCD9B2D1034C5501B7A0B0FDF024D121" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">OAEM 6 [Member]</link:label>
    <link:label id="lab_fnlc_Oaem6Member_A3F6751E9572CBACB626174DF015FD35_documentation_en-US" xlink:label="lab_fnlc_Oaem6Member_FCD9B2D1034C5501B7A0B0FDF024D121" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit quality indicators that are developed and used internally by the company-level 6.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_Oaem6Member" xlink:label="loc_fnlc_Oaem6Member_FCD9B2D1034C5501B7A0B0FDF024D121" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_Oaem6Member_FCD9B2D1034C5501B7A0B0FDF024D121" xlink:to="lab_fnlc_Oaem6Member_FCD9B2D1034C5501B7A0B0FDF024D121" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubstandardMember_AA80D00295A1F4FD443E174DF0154106_terseLabel_en-US" xlink:label="lab_us-gaap_SubstandardMember_6E290FE11CF150A998C6BEA5C5E33BED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">7 Substandard</link:label>
    <link:label id="lab_us-gaap_SubstandardMember_AA80D00295A1F4FD443E174DF0154106_label_en-US" xlink:label="lab_us-gaap_SubstandardMember_6E290FE11CF150A998C6BEA5C5E33BED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Substandard [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubstandardMember" xlink:label="loc_us-gaap_SubstandardMember_6E290FE11CF150A998C6BEA5C5E33BED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubstandardMember_6E290FE11CF150A998C6BEA5C5E33BED" xlink:to="lab_us-gaap_SubstandardMember_6E290FE11CF150A998C6BEA5C5E33BED" xlink:type="arc" />
    <link:label id="lab_us-gaap_DoubtfulMember_00316A157DE7DDF7DD01174DF015DE52_terseLabel_en-US" xlink:label="lab_us-gaap_DoubtfulMember_5F74C12185095BED8788EAFC36F70BF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">8 Doubtful</link:label>
    <link:label id="lab_us-gaap_DoubtfulMember_00316A157DE7DDF7DD01174DF015DE52_label_en-US" xlink:label="lab_us-gaap_DoubtfulMember_5F74C12185095BED8788EAFC36F70BF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Doubtful [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DoubtfulMember" xlink:label="loc_us-gaap_DoubtfulMember_5F74C12185095BED8788EAFC36F70BF8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DoubtfulMember_5F74C12185095BED8788EAFC36F70BF8" xlink:to="lab_us-gaap_DoubtfulMember_5F74C12185095BED8788EAFC36F70BF8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_C4F56BB52D2B2D2C51AD174DF016B736_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_E2C17ED2F28E52B3963F93FF4F32B694" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
    <link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_C4F56BB52D2B2D2C51AD174DF016B736_label_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_E2C17ED2F28E52B3963F93FF4F32B694" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_E2C17ED2F28E52B3963F93FF4F32B694" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_E2C17ED2F28E52B3963F93FF4F32B694" xlink:to="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_E2C17ED2F28E52B3963F93FF4F32B694" xlink:type="arc" />
    <link:label id="lab_fnlc_CommercialAndMunicipalRiskRatedLoansReceivable_5E31F9F0705C77091B21174DF017235B_verboseLabel_en-US" xlink:label="lab_fnlc_CommercialAndMunicipalRiskRatedLoansReceivable_B67B34A1D501536E9A40A8115E4820B5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Commercial and municipal risk-rated loans receivable</link:label>
    <link:label id="lab_fnlc_CommercialAndMunicipalRiskRatedLoansReceivable_5E31F9F0705C77091B21174DF017235B_label_en-US" xlink:label="lab_fnlc_CommercialAndMunicipalRiskRatedLoansReceivable_B67B34A1D501536E9A40A8115E4820B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial And Municipal Risk Rated Loans Receivable</link:label>
    <link:label id="lab_fnlc_CommercialAndMunicipalRiskRatedLoansReceivable_5E31F9F0705C77091B21174DF017235B_documentation_en-US" xlink:label="lab_fnlc_CommercialAndMunicipalRiskRatedLoansReceivable_B67B34A1D501536E9A40A8115E4820B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans subject to review and validation annually by independent consulting firm as well internal credit review function.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_CommercialAndMunicipalRiskRatedLoansReceivable" xlink:label="loc_fnlc_CommercialAndMunicipalRiskRatedLoansReceivable_B67B34A1D501536E9A40A8115E4820B5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_UnallocatedFinancingReceivablesMember_F0BBC9B5262CA26090EC88B8622151BE_terseLabel_en-US" xlink:label="lab_us-gaap_UnallocatedFinancingReceivablesMember_F0BBC9B5262CA26090EC88B8622151BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unallocated</link:label>
    <link:label id="lab_us-gaap_UnallocatedFinancingReceivablesMember_F0BBC9B5262CA26090EC88B8622151BE_label_en-US" xlink:label="lab_us-gaap_UnallocatedFinancingReceivablesMember_F0BBC9B5262CA26090EC88B8622151BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unallocated Financing Receivables [Member]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnallocatedFinancingReceivablesMember_F0BBC9B5262CA26090EC88B8622151BE" xlink:to="lab_us-gaap_UnallocatedFinancingReceivablesMember_F0BBC9B5262CA26090EC88B8622151BE" xlink:type="arc" />
    <link:label id="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_91C02D91E3E38C40B80388B86222F2D2_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_91C02D91E3E38C40B80388B86222F2D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net deferred loan costs</link:label>
    <link:label id="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_91C02D91E3E38C40B80388B86222F2D2_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_91C02D91E3E38C40B80388B86222F2D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Deferred Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansAndLeasesReceivableDeferredIncome" xlink:label="loc_us-gaap_LoansAndLeasesReceivableDeferredIncome_91C02D91E3E38C40B80388B86222F2D2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1_7A6EF34BEC70375F03DB88B86222C9AA_verboseLabel_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1_7A6EF34BEC70375F03DB88B86222C9AA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Qualifying first mortgage loans</link:label>
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    <link:label id="lab_us-gaap_LoansPledgedAsCollateral_08B525B182DB85171F9F88B86222F9AD_terseLabel_en-US" xlink:label="lab_us-gaap_LoansPledgedAsCollateral_08B525B182DB85171F9F88B86222F9AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans pledged as collateral</link:label>
    <link:label id="lab_us-gaap_LoansPledgedAsCollateral_08B525B182DB85171F9F88B86222F9AD_label_en-US" xlink:label="lab_us-gaap_LoansPledgedAsCollateral_08B525B182DB85171F9F88B86222F9AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Pledged as Collateral</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansPledgedAsCollateral_08B525B182DB85171F9F88B86222F9AD" xlink:to="lab_us-gaap_LoansPledgedAsCollateral_08B525B182DB85171F9F88B86222F9AD" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinancingReceivableModificationsNumberOfContracts2_ADB3778C186BB24FEDFC88B86222BAD6_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableModificationsNumberOfContracts2_ADB3778C186BB24FEDFC88B86222BAD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans classified as TDR (loan)</link:label>
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    <link:label id="lab_us-gaap_FinancingReceivableModificationsRecordedInvestment_2C00A452910C378E53B588B862228115_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableModificationsRecordedInvestment_2C00A452910C378E53B588B862228115" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Value of loans classified as TDR</link:label>
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    <link:label id="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue_8276EB5B6837B31DD56E88B86223336D_terseLabel_en-US" xlink:label="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue_8276EB5B6837B31DD56E88B86223336D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Loans</link:label>
    <link:label id="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue_8276EB5B6837B31DD56E88B86223336D_label_en-US" xlink:label="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue_8276EB5B6837B31DD56E88B86223336D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable Modifications Number Of Contracts Greater Than 30 Days Past Due</link:label>
    <link:label id="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue_8276EB5B6837B31DD56E88B86223336D_documentation_en-US" xlink:label="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue_8276EB5B6837B31DD56E88B86223336D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Receivable Modifications Number Of Contracts Greater Than 30 Days Past Due</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue" xlink:label="loc_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDue_8276EB5B6837B31DD56E88B86223336D" xlink:type="locator" />
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    <link:label id="lab_fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue_D927A39958CC13FFA7E388B862235A48_verboseLabel_en-US" xlink:label="lab_fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue_D927A39958CC13FFA7E388B862235A48" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Value of TDR loans more than 30 days past due</link:label>
    <link:label id="lab_fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue_D927A39958CC13FFA7E388B862235A48_label_en-US" xlink:label="lab_fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue_D927A39958CC13FFA7E388B862235A48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable Recorded Investment Greater Than 30 Days Past Due</link:label>
    <link:label id="lab_fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue_D927A39958CC13FFA7E388B862235A48_documentation_en-US" xlink:label="lab_fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue_D927A39958CC13FFA7E388B862235A48" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing receivables that are greater than 30 days past due.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue" xlink:label="loc_fnlc_FinancingReceivableRecordedInvestmentGreaterThan30DaysPastDue_D927A39958CC13FFA7E388B862235A48" xlink:type="locator" />
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    <link:label id="lab_fnlc_NumberOfDaysPastDue_14C67CCBC7EAD78C604988B8622337D1_terseLabel_en-US" xlink:label="lab_fnlc_NumberOfDaysPastDue_14C67CCBC7EAD78C604988B8622337D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of days past due</link:label>
    <link:label id="lab_fnlc_NumberOfDaysPastDue_14C67CCBC7EAD78C604988B8622337D1_label_en-US" xlink:label="lab_fnlc_NumberOfDaysPastDue_14C67CCBC7EAD78C604988B8622337D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Days Past Due</link:label>
    <link:label id="lab_fnlc_NumberOfDaysPastDue_14C67CCBC7EAD78C604988B8622337D1_documentation_en-US" xlink:label="lab_fnlc_NumberOfDaysPastDue_14C67CCBC7EAD78C604988B8622337D1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Days Past Due</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_NumberOfDaysPastDue" xlink:label="loc_fnlc_NumberOfDaysPastDue_14C67CCBC7EAD78C604988B8622337D1" xlink:type="locator" />
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    <link:label id="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months_4776BBECE003397E894888B8622340B7_verboseLabel_en-US" xlink:label="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months_4776BBECE003397E894888B8622340B7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Number of TDR loans more than 30 days past due (loan)</link:label>
    <link:label id="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months_4776BBECE003397E894888B8622340B7_label_en-US" xlink:label="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months_4776BBECE003397E894888B8622340B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable Modifications Number Of Contracts Greater Than 30 Days Past Due Place In TDR In Previous 12 Months</link:label>
    <link:label id="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months_4776BBECE003397E894888B8622340B7_documentation_en-US" xlink:label="lab_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months_4776BBECE003397E894888B8622340B7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of financing receivables greater than 30 days past due that have been modified by troubled debt restructurings and that have been placed in the TDR status in the previous 12 months.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months" xlink:label="loc_fnlc_FinancingReceivableModificationsNumberOfContractsGreaterThan30DaysPastDuePlaceInTDRInPrevious12Months_4776BBECE003397E894888B8622340B7" xlink:type="locator" />
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    <link:label id="lab_fnlc_FinancingReceivableModificationsNumberOfContractsDuringPeriod_590422C791AA209120F288B862230B0E_terseLabel_en-US" xlink:label="lab_fnlc_FinancingReceivableModificationsNumberOfContractsDuringPeriod_590422C791AA209120F288B862230B0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of loans placed on TDR status (loan)</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_FinancingReceivableModificationsNumberOfContractsDuringPeriod" xlink:label="loc_fnlc_FinancingReceivableModificationsNumberOfContractsDuringPeriod_590422C791AA209120F288B862230B0E" xlink:type="locator" />
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    <link:label id="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523_terseLabel_en-US" xlink:label="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of TDR loans involved in bankruptcy (loan)</link:label>
    <link:label id="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523_label_en-US" xlink:label="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Number Of Loans Classified As Troubled Debt Restructurings That Are Involved In Bankruptcy</link:label>
    <link:label id="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523_documentation_en-US" xlink:label="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of loans classified as troubled debt restructurings that are involved in bankruptcy as of the balance sheet date.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy" xlink:label="loc_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523" xlink:to="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_2F32141A642B6296082188B86223A523" xlink:type="arc" />
    <link:label id="lab_fnlc_FinancingReceivableLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_C7FF46CBED7F3FA7702988B86224559A_terseLabel_en-US" xlink:label="lab_fnlc_FinancingReceivableLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_C7FF46CBED7F3FA7702988B86224559A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Value of TDR loans involved in bankruptcy</link:label>
    <link:label id="lab_fnlc_FinancingReceivableLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_C7FF46CBED7F3FA7702988B86224559A_label_en-US" xlink:label="lab_fnlc_FinancingReceivableLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_C7FF46CBED7F3FA7702988B86224559A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Loans Classified As Troubled Debt Restructurings That Are Involved In Bankruptcy</link:label>
    <link:label id="lab_fnlc_FinancingReceivableLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_C7FF46CBED7F3FA7702988B86224559A_documentation_en-US" xlink:label="lab_fnlc_FinancingReceivableLoansClassifiedAsTroubledDebtRestructuringsThatAreInvolvedInBankruptcy_C7FF46CBED7F3FA7702988B86224559A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Carrying amount of loans classified as troubled debt restructurings that are involved in bankruptcy as of the balance sheet date.</link:label>
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    <link:label id="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatWereOnNonAccrualStatus_292A5D7F2CE0172215EF88B862249087_terseLabel_en-US" xlink:label="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatWereOnNonAccrualStatus_292A5D7F2CE0172215EF88B862249087" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of TDR loans on non-accrual status (loan)</link:label>
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    <link:label id="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatWereOnNonAccrualStatus_292A5D7F2CE0172215EF88B862249087_documentation_en-US" xlink:label="lab_fnlc_FinancingReceivableNumberOfLoansClassifiedAsTroubledDebtRestructuringsThatWereOnNonAccrualStatus_292A5D7F2CE0172215EF88B862249087" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of loans classified as troubled debt restructurings that were on non-accrual status as of the balance sheet date.</link:label>
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    <link:label id="lab_fnlc_AvailableforsaleSecuritiesTransferredtoHeldtomaturitySecuritiesAccumulatedUnrealizedGainLoss_949188250D5BD0F0283989B1F2E41CBD_negatedTerseLabel_en-US" xlink:label="lab_fnlc_AvailableforsaleSecuritiesTransferredtoHeldtomaturitySecuritiesAccumulatedUnrealizedGainLoss_949188250D5BD0F0283989B1F2E41CBD" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net unrealized loss, net of taxes on transferred securities</link:label>
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    <link:label id="lab_fnlc_NumberOfStatesInNewEnglandWhereFhlbServe_97C2E8BDC2E7112536B289B1F2E4E21F_terseLabel_en-US" xlink:label="lab_fnlc_NumberOfStatesInNewEnglandWhereFhlbServe_97C2E8BDC2E7112536B289B1F2E4E21F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of states in New England where FHLB serve (state)</link:label>
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    <link:label id="lab_us-gaap_FederalReserveBankStock_F887C107CE9F70C3DF43488B7F93893A_terseLabel_en-US" xlink:label="lab_us-gaap_FederalReserveBankStock_F887C107CE9F70C3DF43488B7F93893A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal Reserve Bank Stock</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_76C85E0370B208A9B5A58901F3407609" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FairValueMeasurementsNonrecurringMember_DA2B5BD1E1419566202B8901F0E1231E_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsNonrecurringMember_DA2B5BD1E1419566202B8901F0E1231E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Measurements, Nonrecurring</link:label>
    <link:label id="lab_us-gaap_FairValueMeasurementsNonrecurringMember_DA2B5BD1E1419566202B8901F0E1231E_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsNonrecurringMember_DA2B5BD1E1419566202B8901F0E1231E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Measurements, Nonrecurring [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_DA2B5BD1E1419566202B8901F0E1231E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementsNonrecurringMember_DA2B5BD1E1419566202B8901F0E1231E" xlink:to="lab_us-gaap_FairValueMeasurementsNonrecurringMember_DA2B5BD1E1419566202B8901F0E1231E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInputsLevel1Member_8D5D602FFB571EFB47458901F0E2FACD_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_8D5D602FFB571EFB47458901F0E2FACD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Level 1</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_8D5D602FFB571EFB47458901F0E2FACD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel1Member_8D5D602FFB571EFB47458901F0E2FACD" xlink:to="lab_us-gaap_FairValueInputsLevel1Member_8D5D602FFB571EFB47458901F0E2FACD" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherRealEstateAndForeclosedAssets_AD0495E48D84A087D8478901F0E3EE69_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherRealEstateAndForeclosedAssets_AD0495E48D84A087D8478901F0E3EE69" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other real estate owned</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherRealEstateAndForeclosedAssets" xlink:label="loc_us-gaap_OtherRealEstateAndForeclosedAssets_AD0495E48D84A087D8478901F0E3EE69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherRealEstateAndForeclosedAssets_AD0495E48D84A087D8478901F0E3EE69" xlink:to="lab_us-gaap_OtherRealEstateAndForeclosedAssets_AD0495E48D84A087D8478901F0E3EE69" xlink:type="arc" />
    <link:label id="lab_fnlc_ImpairedLoansFairValueDisclosure_F1E994835A8A56354CC48901F0E3C8A8_terseLabel_en-US" xlink:label="lab_fnlc_ImpairedLoansFairValueDisclosure_F1E994835A8A56354CC48901F0E3C8A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impaired loans</link:label>
    <link:label id="lab_fnlc_ImpairedLoansFairValueDisclosure_F1E994835A8A56354CC48901F0E3C8A8_label_en-US" xlink:label="lab_fnlc_ImpairedLoansFairValueDisclosure_F1E994835A8A56354CC48901F0E3C8A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impaired Loans Fair Value Disclosure</link:label>
    <link:label id="lab_fnlc_ImpairedLoansFairValueDisclosure_F1E994835A8A56354CC48901F0E3C8A8_documentation_en-US" xlink:label="lab_fnlc_ImpairedLoansFairValueDisclosure_F1E994835A8A56354CC48901F0E3C8A8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the fair value disclosure of impaired loans that have had a fair value adjustment since their initial recognition.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ImpairedLoansFairValueDisclosure" xlink:label="loc_fnlc_ImpairedLoansFairValueDisclosure_F1E994835A8A56354CC48901F0E3C8A8" xlink:type="locator" />
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    <link:label id="lab_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_2943564C277815C75E5B174DF0C3D1B2_verboseLabel_en-US" xlink:label="lab_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_58DC81FC768C50B5B2E1DB85B1467B20" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Available For Sale, Held-to-Maturity, and Restricted Equity Securities</link:label>
    <link:label id="lab_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_2943564C277815C75E5B174DF0C3D1B2_label_en-US" xlink:label="lab_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_58DC81FC768C50B5B2E1DB85B1467B20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available For Sale Held to Maturity and Restricted Equity Securities [Table Text Block]</link:label>
    <link:label id="lab_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_2943564C277815C75E5B174DF0C3D1B2_documentation_en-US" xlink:label="lab_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_58DC81FC768C50B5B2E1DB85B1467B20" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular presentation of available for sale securities, held-to-maturity securities and restricted equity securities as of the balance sheet date.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock" xlink:label="loc_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_58DC81FC768C50B5B2E1DB85B1467B20" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_58DC81FC768C50B5B2E1DB85B1467B20" xlink:to="lab_fnlc_ScheduleOfAvailableForSaleHeldToMaturityAndNonMarketableSecuritiesTableTextBlock_58DC81FC768C50B5B2E1DB85B1467B20" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_112D4EC5FF81AA705D48174DF0C4047E_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_F5ECFADD8C2F5F288D035FCD9AA34BE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contractual Maturities of Investment Securities</link:label>
    <link:label id="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_112D4EC5FF81AA705D48174DF0C4047E_label_en-US" xlink:label="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_F5ECFADD8C2F5F288D035FCD9AA34BE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments Classified by Contractual Maturity Date [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:label="loc_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_F5ECFADD8C2F5F288D035FCD9AA34BE3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_F5ECFADD8C2F5F288D035FCD9AA34BE3" xlink:to="lab_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_F5ECFADD8C2F5F288D035FCD9AA34BE3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_49BCD0D5CBCB1E25FB6A174DF0C49631_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_9075FE69EC38500C829B7542AD013FBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Securities Gains and Losses</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_49BCD0D5CBCB1E25FB6A174DF0C49631_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_9075FE69EC38500C829B7542AD013FBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Realized Gain (Loss) [Table Text Block]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_9075FE69EC38500C829B7542AD013FBE" xlink:to="lab_us-gaap_ScheduleOfRealizedGainLossTableTextBlock_9075FE69EC38500C829B7542AD013FBE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock_0002B630B9D2C0916F4B174DF0C462B5_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock_4029449B16CA5B4F9392C6BA0950BDE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Securities Temporarily Impaired</link:label>
    <link:label id="lab_us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock_0002B630B9D2C0916F4B174DF0C462B5_label_en-US" xlink:label="lab_us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock_4029449B16CA5B4F9392C6BA0950BDE2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Temporary Impairment Losses, Investments [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock_4029449B16CA5B4F9392C6BA0950BDE2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock_4029449B16CA5B4F9392C6BA0950BDE2" xlink:to="lab_us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock_4029449B16CA5B4F9392C6BA0950BDE2" xlink:type="arc" />
    <link:label id="lab_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6_terseLabel_en-US" xlink:label="lab_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mortgage servicing rights</link:label>
    <link:label id="lab_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6_label_en-US" xlink:label="lab_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mortgage Servicing Rights Gross</link:label>
    <link:label id="lab_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6_documentation_en-US" xlink:label="lab_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gross amount, as of the balance sheet date, of mortgage servicing rights.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_MortgageServicingRightsGross" xlink:label="loc_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6" xlink:to="lab_fnlc_MortgageServicingRightsGross_2ADF0332783DC28167F48901F10792B6" xlink:type="arc" />
    <link:label id="lab_fnlc_AccumulatedAmortizationMortgageServicingRights_4F432FD7F9BA452F31018901F107C420_negatedTerseLabel_en-US" xlink:label="lab_fnlc_AccumulatedAmortizationMortgageServicingRights_4F432FD7F9BA452F31018901F107C420" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accumulated amortization</link:label>
    <link:label id="lab_fnlc_AccumulatedAmortizationMortgageServicingRights_4F432FD7F9BA452F31018901F107C420_label_en-US" xlink:label="lab_fnlc_AccumulatedAmortizationMortgageServicingRights_4F432FD7F9BA452F31018901F107C420" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Amortization Mortgage Servicing Rights</link:label>
    <link:label id="lab_fnlc_AccumulatedAmortizationMortgageServicingRights_4F432FD7F9BA452F31018901F107C420_documentation_en-US" xlink:label="lab_fnlc_AccumulatedAmortizationMortgageServicingRights_4F432FD7F9BA452F31018901F107C420" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cumulative amount of amortization for mortgage servicing rights that has been recognized in the income statement.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_AccumulatedAmortizationMortgageServicingRights" xlink:label="loc_fnlc_AccumulatedAmortizationMortgageServicingRights_4F432FD7F9BA452F31018901F107C420" xlink:type="locator" />
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    <link:label id="lab_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58_negatedTerseLabel_en-US" xlink:label="lab_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Impairment reserve</link:label>
    <link:label id="lab_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58_label_en-US" xlink:label="lab_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve For Impairment of Mortgage Servicing Rights</link:label>
    <link:label id="lab_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58_documentation_en-US" xlink:label="lab_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">A reserve for the amount of expected decrease in the value of mortgage servicing rights which cannot be physically measured.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ReserveForImpairmentOfMortgageServicingRights" xlink:label="loc_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58" xlink:to="lab_fnlc_ReserveForImpairmentOfMortgageServicingRights_A3C36563EEEB1FBAC3318901F107BF58" xlink:type="arc" />
    <link:label id="lab_us-gaap_ServicingAssetAtAmortizedValueFairValue_A5E7A74694E890AEC4468901F1082D28_totalLabel_en-US" xlink:label="lab_us-gaap_ServicingAssetAtAmortizedValueFairValue_A5E7A74694E890AEC4468901F1082D28" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total servicing asset at fair value</link:label>
    <link:label id="lab_us-gaap_ServicingAssetAtAmortizedValueFairValue_A5E7A74694E890AEC4468901F1082D28_label_en-US" xlink:label="lab_us-gaap_ServicingAssetAtAmortizedValueFairValue_A5E7A74694E890AEC4468901F1082D28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Servicing Asset at Amortized Cost, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ServicingAssetAtAmortizedValueFairValue" xlink:label="loc_us-gaap_ServicingAssetAtAmortizedValueFairValue_A5E7A74694E890AEC4468901F1082D28" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ServicingAssetAtAmortizedValueFairValue_A5E7A74694E890AEC4468901F1082D28" xlink:to="lab_us-gaap_ServicingAssetAtAmortizedValueFairValue_A5E7A74694E890AEC4468901F1082D28" xlink:type="arc" />
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    <link:label id="lab_fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPeriodIncreaseDecrease_0E3D060046CC147A1E078E1C5E541980_label_en-US" xlink:label="lab_fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPeriodIncreaseDecrease_0E3D060046CC147A1E078E1C5E541980" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance for Loan and Lease Losses, Related Loans, Period Increase (Decrease)</link:label>
    <link:label id="lab_fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPeriodIncreaseDecrease_0E3D060046CC147A1E078E1C5E541980_documentation_en-US" xlink:label="lab_fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPeriodIncreaseDecrease_0E3D060046CC147A1E078E1C5E541980" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Allowance for Loan and Lease Losses, Related Loans, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPeriodIncreaseDecrease" xlink:label="loc_fnlc_AllowanceforLoanandLeaseLossesRelatedLoansPeriodIncreaseDecrease_0E3D060046CC147A1E078E1C5E541980" xlink:type="locator" />
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    <link:label id="lab_fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances_ED27BF95340B5F7B90778E1C5E544795_terseLabel_en-US" xlink:label="lab_fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances_ED27BF95340B5F7B90778E1C5E544795" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total reserve allowance accounted for by loan loss allowances (percent)</link:label>
    <link:label id="lab_fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances_ED27BF95340B5F7B90778E1C5E544795_label_en-US" xlink:label="lab_fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances_ED27BF95340B5F7B90778E1C5E544795" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of Total Reserve Allowance accounted for by Loan Loss Allowances</link:label>
    <link:label id="lab_fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances_ED27BF95340B5F7B90778E1C5E544795_documentation_en-US" xlink:label="lab_fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances_ED27BF95340B5F7B90778E1C5E544795" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of Total Reserve Allowance accounted for by Loan Loss Allowances</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances" xlink:label="loc_fnlc_PercentageofTotalReserveAllowanceaccountedforbyLoanLossAllowances_ED27BF95340B5F7B90778E1C5E544795" xlink:type="locator" />
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    <link:label id="lab_fnlc_AllowanceforLoanLossesofTotalLoansPercentage_30585A2D77BFE7A39D428E1C5E5442E1_terseLabel_en-US" xlink:label="lab_fnlc_AllowanceforLoanLossesofTotalLoansPercentage_30585A2D77BFE7A39D428E1C5E5442E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allowance for loan losses as a percent of total loans</link:label>
    <link:label id="lab_fnlc_AllowanceforLoanLossesofTotalLoansPercentage_30585A2D77BFE7A39D428E1C5E5442E1_label_en-US" xlink:label="lab_fnlc_AllowanceforLoanLossesofTotalLoansPercentage_30585A2D77BFE7A39D428E1C5E5442E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance for Loan Losses of Total Loans, Percentage</link:label>
    <link:label id="lab_fnlc_AllowanceforLoanLossesofTotalLoansPercentage_30585A2D77BFE7A39D428E1C5E5442E1_documentation_en-US" xlink:label="lab_fnlc_AllowanceforLoanLossesofTotalLoansPercentage_30585A2D77BFE7A39D428E1C5E5442E1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Allowance for Loan Losses of Total Loans, Percentage</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_AllowanceforLoanLossesofTotalLoansPercentage" xlink:label="loc_fnlc_AllowanceforLoanLossesofTotalLoansPercentage_30585A2D77BFE7A39D428E1C5E5442E1" xlink:type="locator" />
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    <link:label id="lab_fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses_6E3C33DD9E355557CE0A8E1C5E540FE1_terseLabel_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses_6E3C33DD9E355557CE0A8E1C5E540FE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of classes in the commercial loan portfolio</link:label>
    <link:label id="lab_fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses_6E3C33DD9E355557CE0A8E1C5E540FE1_label_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses_6E3C33DD9E355557CE0A8E1C5E540FE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Commercial, Number of Loan Classes</link:label>
    <link:label id="lab_fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses_6E3C33DD9E355557CE0A8E1C5E540FE1_documentation_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses_6E3C33DD9E355557CE0A8E1C5E540FE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Commercial, Number of Loan Classes</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses" xlink:label="loc_fnlc_LoansandLeasesReceivableCommercialNumberofLoanClasses_6E3C33DD9E355557CE0A8E1C5E540FE1" xlink:type="locator" />
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    <link:label id="lab_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1_terseLabel_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of classes in the residential loan portfolio</link:label>
    <link:label id="lab_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1_label_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Residential, Number of Loan Classes</link:label>
    <link:label id="lab_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1_documentation_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Residential, Number of Loan Classes</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses" xlink:label="loc_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1" xlink:to="lab_fnlc_LoansandLeasesReceivableResidentialNumberofLoanClasses_425464CDC18CA58591F98E1C5E557AD1" xlink:type="arc" />
    <link:label id="lab_fnlc_ResidentialLoansTypicalLoanToValue_0929D9E79DA8F2E762638E1C5E554DD0_terseLabel_en-US" xlink:label="lab_fnlc_ResidentialLoansTypicalLoanToValue_0929D9E79DA8F2E762638E1C5E554DD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Residential loans typical loan to value range (as a percentage)</link:label>
    <link:label id="lab_fnlc_ResidentialLoansTypicalLoanToValue_0929D9E79DA8F2E762638E1C5E554DD0_label_en-US" xlink:label="lab_fnlc_ResidentialLoansTypicalLoanToValue_0929D9E79DA8F2E762638E1C5E554DD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Residential Loans Typical Loan To Value</link:label>
    <link:label id="lab_fnlc_ResidentialLoansTypicalLoanToValue_0929D9E79DA8F2E762638E1C5E554DD0_documentation_en-US" xlink:label="lab_fnlc_ResidentialLoansTypicalLoanToValue_0929D9E79DA8F2E762638E1C5E554DD0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Residential Loans Typical Loan To Value</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ResidentialLoansTypicalLoanToValue" xlink:label="loc_fnlc_ResidentialLoansTypicalLoanToValue_0929D9E79DA8F2E762638E1C5E554DD0" xlink:type="locator" />
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    <link:label id="lab_fnlc_CollateralizedConsumerLoansToIndividualsLoanToValue_1F4318D4AFFF641B95D08E1C5E552429_terseLabel_en-US" xlink:label="lab_fnlc_CollateralizedConsumerLoansToIndividualsLoanToValue_1F4318D4AFFF641B95D08E1C5E552429" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collateralized consumer loans to individuals loan to value maximum range (as a percentage)</link:label>
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    <link:label id="lab_fnlc_LoansandLeasesReceivableLoantoValueRatio_D7770421237D5AA35C3D8E1C5E552EDE_terseLabel_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableLoantoValueRatio_D7770421237D5AA35C3D8E1C5E552EDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan-to-value ratio</link:label>
    <link:label id="lab_fnlc_LoansandLeasesReceivableLoantoValueRatio_D7770421237D5AA35C3D8E1C5E552EDE_label_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableLoantoValueRatio_D7770421237D5AA35C3D8E1C5E552EDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Loan to Value Ratio</link:label>
    <link:label id="lab_fnlc_LoansandLeasesReceivableLoantoValueRatio_D7770421237D5AA35C3D8E1C5E552EDE_documentation_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableLoantoValueRatio_D7770421237D5AA35C3D8E1C5E552EDE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Loan to Value Ratio</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_LoansandLeasesReceivableLoantoValueRatio" xlink:label="loc_fnlc_LoansandLeasesReceivableLoantoValueRatio_D7770421237D5AA35C3D8E1C5E552EDE" xlink:type="locator" />
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    <link:label id="lab_fnlc_LoansandLeasesReceivableAmortizationTerm_633C8AFE6A4D6822C9D48E1C5E55FFA3_terseLabel_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableAmortizationTerm_633C8AFE6A4D6822C9D48E1C5E55FFA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization term of residential loans</link:label>
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    <link:label id="lab_fnlc_LoansandLeasesReceivableAmortizationTerm_633C8AFE6A4D6822C9D48E1C5E55FFA3_documentation_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableAmortizationTerm_633C8AFE6A4D6822C9D48E1C5E55FFA3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Amortization Term</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_LoansandLeasesReceivableAmortizationTerm" xlink:label="loc_fnlc_LoansandLeasesReceivableAmortizationTerm_633C8AFE6A4D6822C9D48E1C5E55FFA3" xlink:type="locator" />
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    <link:label id="lab_fnlc_LoansandLeasesReceivableTerm_CBDFF8EBAD36731715B08E1C5E56E2EB_terseLabel_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableTerm_CBDFF8EBAD36731715B08E1C5E56E2EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan maturities</link:label>
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    <link:label id="lab_fnlc_LoansandLeasesReceivableTerm_CBDFF8EBAD36731715B08E1C5E56E2EB_documentation_en-US" xlink:label="lab_fnlc_LoansandLeasesReceivableTerm_CBDFF8EBAD36731715B08E1C5E56E2EB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loans and Leases Receivable, Term</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_LoansandLeasesReceivableTerm" xlink:label="loc_fnlc_LoansandLeasesReceivableTerm_CBDFF8EBAD36731715B08E1C5E56E2EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_LoansandLeasesReceivableTerm_CBDFF8EBAD36731715B08E1C5E56E2EB" xlink:to="lab_fnlc_LoansandLeasesReceivableTerm_CBDFF8EBAD36731715B08E1C5E56E2EB" xlink:type="arc" />
    <link:label id="lab_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F_terseLabel_en-US" xlink:label="lab_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Construction loans accrual to company capital</link:label>
    <link:label id="lab_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F_label_en-US" xlink:label="lab_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction Loans Actual Loan Portfolio To Company Capital</link:label>
    <link:label id="lab_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F_documentation_en-US" xlink:label="lab_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The ratio of loan portfolio to Company capital for construction loans .</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital" xlink:label="loc_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F" xlink:to="lab_fnlc_ConstructionLoansActualLoanPortfolioToCompanyCapital_6852A847F50A5221AA488E1C5E56B41F" xlink:type="arc" />
    <link:label id="lab_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638_terseLabel_en-US" xlink:label="lab_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Constructions loan portfolio maximum to company capital</link:label>
    <link:label id="lab_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638_label_en-US" xlink:label="lab_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction Loan Portfolio Maximum To Company Capital</link:label>
    <link:label id="lab_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638_documentation_en-US" xlink:label="lab_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The regulatory maximum allowed ratio of loan portfolio to Company capital for construction loans.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital" xlink:label="loc_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638" xlink:to="lab_fnlc_ConstructionLoanPortfolioMaximumToCompanyCapital_C8BAD2B3A3E15C57A98C8E1C5E563638" xlink:type="arc" />
    <link:label id="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72_terseLabel_en-US" xlink:label="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Construction and non owner occupied commercial real estate</link:label>
    <link:label id="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72_label_en-US" xlink:label="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction And Non Owner Occupied Commercial Real Estate Loans Portfolio To Company Capital</link:label>
    <link:label id="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72_documentation_en-US" xlink:label="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The actual ratio of loan amount to Company capital for construction and non-owner-occupied commercial real estate.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital" xlink:label="loc_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72" xlink:to="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansPortfolioToCompanyCapital_956E8F91FBEAA39F51FD8E1C5E566E72" xlink:type="arc" />
    <link:label id="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7_terseLabel_en-US" xlink:label="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum loan portfolio to company capital</link:label>
    <link:label id="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7_label_en-US" xlink:label="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction And Non Owner Occupied Commercial Real Estate Loans Maximum Loan Portfolio To Company Capital</link:label>
    <link:label id="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7_documentation_en-US" xlink:label="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The regulatory maximum allowed ratio of loan portfolio to Company capital for construction and non-owner-occupied commercial real estate.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital" xlink:label="loc_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7" xlink:to="lab_fnlc_ConstructionAndNonOwnerOccupiedCommercialRealEstateLoansMaximumLoanPortfolioToCompanyCapital_CB23949DBF03C52F331E8E1C5E57BAF7" xlink:type="arc" />
    <link:label id="lab_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56_terseLabel_en-US" xlink:label="lab_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding loans and commitments subject by independent consulting firm</link:label>
    <link:label id="lab_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56_label_en-US" xlink:label="lab_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Outstanding loans and commitments subject by independent consulting firm</link:label>
    <link:label id="lab_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56_documentation_en-US" xlink:label="lab_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of loans and commitments subject to review by an independent consulting firm each year.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm" xlink:label="loc_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56" xlink:to="lab_fnlc_OutstandingLoansAndCommitmentsSubjectByIndependentConsultingFirm_BD82CB4359D148A3B0E28E1C5E578F56" xlink:type="arc" />
    <link:label id="lab_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F_terseLabel_en-US" xlink:label="lab_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Delinquent period before consumer loans charged off (days)</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F_label_en-US" xlink:label="lab_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Delinquent Period Before Consumer Loans Charged Off</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F_documentation_en-US" xlink:label="lab_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Delinquent Period Before Consumer Loans Charged Off</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff" xlink:label="loc_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F" xlink:to="lab_fnlc_DelinquentPeriodBeforeConsumerLoansChargedOff_E0674FF7C43C1FE330998E1C5E57E71F" xlink:type="arc" />
    <link:label id="lab_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4_terseLabel_en-US" xlink:label="lab_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Delinquent period before residential loans placed on non accrual status (days)</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4_label_en-US" xlink:label="lab_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Delinquent Period Before Residential Loans Placed On Non Accrual Status</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4_documentation_en-US" xlink:label="lab_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount of days past due at which residential loans are placed on non-accrual status..</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus" xlink:label="loc_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4" xlink:to="lab_fnlc_DelinquentPeriodBeforeResidentialLoansPlacedOnNonAccrualStatus_174EEFF3E52842567A6A8E1C5E5866C4" xlink:type="arc" />
    <link:label id="lab_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD_terseLabel_en-US" xlink:label="lab_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Delinquent period for loans charged off (days)</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD_label_en-US" xlink:label="lab_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Delinquent Period for Loans Charged Off</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD_documentation_en-US" xlink:label="lab_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Delinquent Period for Loans Charged Off</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_DelinquentPeriodforLoansChargedOff" xlink:label="loc_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD" xlink:to="lab_fnlc_DelinquentPeriodforLoansChargedOff_852CA67955EC351E1BB38E1C5E5806BD" xlink:type="arc" />
    <link:label id="lab_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2_terseLabel_en-US" xlink:label="lab_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Delinquency period for loans charged off after receipt of notification from bankruptcy court (days)</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2_label_en-US" xlink:label="lab_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Delinquent Period for Loans Charged Off, Period After Receipt of Notification from Bankruptcy Court</link:label>
    <link:label id="lab_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2_documentation_en-US" xlink:label="lab_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Delinquent Period for Loans Charged Off, Period After Receipt of Notification from Bankruptcy Court</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt" xlink:label="loc_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2" xlink:to="lab_fnlc_DelinquentPeriodforLoansChargedOffPeriodAfterReceiptofNotificationfromBankruptcyCourt_255850F8EF5618D491218E1C5E5874E2" xlink:type="arc" />
    <link:label id="lab_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB_terseLabel_en-US" xlink:label="lab_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Net Gain (Loss) on Securities Transferred from Available-for-Sale to Held-to-Maturity</link:label>
    <link:label id="lab_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB_label_en-US" xlink:label="lab_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Net Gain (Loss) on Securities Transferred from Available-for-Sale to Held-to-Maturity [Member]</link:label>
    <link:label id="lab_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB_documentation_en-US" xlink:label="lab_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accumulated Net Gain (Loss) on Securities Transferred from Available-for-Sale to Held-to-Maturity [Member]</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember" xlink:label="loc_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB" xlink:to="lab_fnlc_AccumulatedNetGainLossonSecuritiesTransferredfromAvailableforSaletoHeldtoMaturityMember_6D5C449F4F2E4B1462038901F12D4BCB" xlink:type="arc" />
    <link:label id="lab_fnlc_ReclassificationofAvailableforSaleSecuritiestoHeldtomaturityRollForwardRollForward_ACDDEDD97C3E5A98E2388901F12D041B_terseLabel_en-US" xlink:label="lab_fnlc_ReclassificationofAvailableforSaleSecuritiestoHeldtomaturityRollForwardRollForward_ACDDEDD97C3E5A98E2388901F12D041B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassification of Available-for-Sale Securities to Held-to-maturity Roll Forward [Roll Forward]</link:label>
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    <link:label id="lab_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6_terseLabel_en-US" xlink:label="lab_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unfunded, supplemental retirement benefits payable period (years)</link:label>
    <link:label id="lab_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6_label_en-US" xlink:label="lab_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Post Employment Plan, Supplemental Benefits, Payment Period Upon Retirement Or Death</link:label>
    <link:label id="lab_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6_documentation_en-US" xlink:label="lab_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Post Employment Plan, Supplemental Benefits, Payment Period Upon Retirement Or Death</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath" xlink:label="loc_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6" xlink:to="lab_fnlc_PostEmploymentPlanSupplementalBenefitsPaymentPeriodUponRetirementOrDeath_DF8A0AC0D3FD51949CDF4875F8641CD6" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_88040D7EDB8173CB3D6B4875F864AF04_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_88040D7EDB8173CB3D6B4875F864AF04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pension expense</link:label>
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_88040D7EDB8173CB3D6B4875F864AF04_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_88040D7EDB8173CB3D6B4875F864AF04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension and Other Postretirement Benefits Cost (Reversal of Cost)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitExpense" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_88040D7EDB8173CB3D6B4875F864AF04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_88040D7EDB8173CB3D6B4875F864AF04" xlink:to="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_88040D7EDB8173CB3D6B4875F864AF04" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_90C339371AB0069D7D344875F8649EF9_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_90C339371AB0069D7D344875F8649EF9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued pension liability</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_90C339371AB0069D7D344875F8649EF9_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_90C339371AB0069D7D344875F8649EF9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability, Defined Benefit Pension Plan</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities" xlink:label="loc_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_90C339371AB0069D7D344875F8649EF9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_90C339371AB0069D7D344875F8649EF9" xlink:to="lab_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_90C339371AB0069D7D344875F8649EF9" xlink:type="arc" />
    <link:label id="lab_fnlc_NumberOfPostRetirementBenefitPlans_16D18885E417CCD1DD634875F86428F2_terseLabel_en-US" xlink:label="lab_fnlc_NumberOfPostRetirementBenefitPlans_16D18885E417CCD1DD634875F86428F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of post retirement benefit plans (post retirement benefit plan)</link:label>
    <link:label id="lab_fnlc_NumberOfPostRetirementBenefitPlans_16D18885E417CCD1DD634875F86428F2_label_en-US" xlink:label="lab_fnlc_NumberOfPostRetirementBenefitPlans_16D18885E417CCD1DD634875F86428F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Post Retirement Benefit Plans</link:label>
    <link:label id="lab_fnlc_NumberOfPostRetirementBenefitPlans_16D18885E417CCD1DD634875F86428F2_documentation_en-US" xlink:label="lab_fnlc_NumberOfPostRetirementBenefitPlans_16D18885E417CCD1DD634875F86428F2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of post-retirement benefit plans sponsored by the company.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_NumberOfPostRetirementBenefitPlans" xlink:label="loc_fnlc_NumberOfPostRetirementBenefitPlans_16D18885E417CCD1DD634875F86428F2" xlink:type="locator" />
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    <link:label id="lab_fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan_3D870E2E6568E7AFED894875F864F0A7_terseLabel_en-US" xlink:label="lab_fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan_3D870E2E6568E7AFED894875F864F0A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of employees currently eligible (employee)</link:label>
    <link:label id="lab_fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan_3D870E2E6568E7AFED894875F864F0A7_label_en-US" xlink:label="lab_fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan_3D870E2E6568E7AFED894875F864F0A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Employees Currently Eligible Under Post Retirement Plan</link:label>
    <link:label id="lab_fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan_3D870E2E6568E7AFED894875F864F0A7_documentation_en-US" xlink:label="lab_fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan_3D870E2E6568E7AFED894875F864F0A7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Employees Currently Eligible Under Post Retirement Plan</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan" xlink:label="loc_fnlc_NumberOfEmployeesCurrentlyEligibleUnderPostRetirementPlan_3D870E2E6568E7AFED894875F864F0A7" xlink:type="locator" />
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    <link:label id="lab_fnlc_EmployeeBenefitPlanRequisiteMinimumAge_2697EB4971C978078E0E4875F8657588_terseLabel_en-US" xlink:label="lab_fnlc_EmployeeBenefitPlanRequisiteMinimumAge_2697EB4971C978078E0E4875F8657588" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Requisite age (in years)</link:label>
    <link:label id="lab_fnlc_EmployeeBenefitPlanRequisiteMinimumAge_2697EB4971C978078E0E4875F8657588_label_en-US" xlink:label="lab_fnlc_EmployeeBenefitPlanRequisiteMinimumAge_2697EB4971C978078E0E4875F8657588" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Benefit Plan, Requisite Minimum Age</link:label>
    <link:label id="lab_fnlc_EmployeeBenefitPlanRequisiteMinimumAge_2697EB4971C978078E0E4875F8657588_documentation_en-US" xlink:label="lab_fnlc_EmployeeBenefitPlanRequisiteMinimumAge_2697EB4971C978078E0E4875F8657588" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Employee Benefit Plan, Requisite Minimum Age</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_EmployeeBenefitPlanRequisiteMinimumAge" xlink:label="loc_fnlc_EmployeeBenefitPlanRequisiteMinimumAge_2697EB4971C978078E0E4875F8657588" xlink:type="locator" />
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    <link:label id="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum_4B6D6D4F05C00BD001514875F865FF3D_verboseLabel_en-US" xlink:label="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum_4B6D6D4F05C00BD001514875F865FF3D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Post-retirement benefit plan health insurance subsidy range minimum per month per person</link:label>
    <link:label id="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum_4B6D6D4F05C00BD001514875F865FF3D_label_en-US" xlink:label="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum_4B6D6D4F05C00BD001514875F865FF3D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Post Retirement Benefit Plan Health Insurance Subsidy Range Minimum</link:label>
    <link:label id="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum_4B6D6D4F05C00BD001514875F865FF3D_documentation_en-US" xlink:label="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum_4B6D6D4F05C00BD001514875F865FF3D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount employer will contribute per month to post-retiree for subsidizing the cost of health care insurance.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum" xlink:label="loc_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMinimum_4B6D6D4F05C00BD001514875F865FF3D" xlink:type="locator" />
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    <link:label id="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum_38A72B2BA8BD29FC1D574875F865CF6D_verboseLabel_en-US" xlink:label="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum_38A72B2BA8BD29FC1D574875F865CF6D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Post-retirement benefit plan health insurance subsidy range maximum per month per person</link:label>
    <link:label id="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum_38A72B2BA8BD29FC1D574875F865CF6D_label_en-US" xlink:label="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum_38A72B2BA8BD29FC1D574875F865CF6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Post Retirement Benefit Plan Health Insurance Subsidy Range Maximum</link:label>
    <link:label id="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum_38A72B2BA8BD29FC1D574875F865CF6D_documentation_en-US" xlink:label="lab_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum_38A72B2BA8BD29FC1D574875F865CF6D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The maximum amount employer will contribute per month to post-retiree for subsidizing the cost of health care insurance.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum" xlink:label="loc_fnlc_PostRetirementBenefitPlanHealthInsuranceSubsidyRangeMaximum_38A72B2BA8BD29FC1D574875F865CF6D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_692E5C20C02F9C693CCA4875F865DBCC_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_692E5C20C02F9C693CCA4875F865DBCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount rate</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_692E5C20C02F9C693CCA4875F865DBCC" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_B1DD0D3148BF6A8C49784875F8657B51_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_B1DD0D3148BF6A8C49784875F8657B51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assumed health care cost trend rate</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_B1DD0D3148BF6A8C49784875F8657B51" xlink:type="locator" />
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    <link:label id="lab_fnlc_ExpectedFutureBenefitPaymentsCurrentYear_A4D3DF85D3B5FCC06AC14875F865DA8D_terseLabel_en-US" xlink:label="lab_fnlc_ExpectedFutureBenefitPaymentsCurrentYear_A4D3DF85D3B5FCC06AC14875F865DA8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected future benefit payments, current year</link:label>
    <link:label id="lab_fnlc_ExpectedFutureBenefitPaymentsCurrentYear_A4D3DF85D3B5FCC06AC14875F865DA8D_label_en-US" xlink:label="lab_fnlc_ExpectedFutureBenefitPaymentsCurrentYear_A4D3DF85D3B5FCC06AC14875F865DA8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Future Benefit Payments, Current Year</link:label>
    <link:label id="lab_fnlc_ExpectedFutureBenefitPaymentsCurrentYear_A4D3DF85D3B5FCC06AC14875F865DA8D_documentation_en-US" xlink:label="lab_fnlc_ExpectedFutureBenefitPaymentsCurrentYear_A4D3DF85D3B5FCC06AC14875F865DA8D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of the benefits expected to be paid during the year.</link:label>
    <link:loc xlink:href="fnlc-20190331.xsd#fnlc_ExpectedFutureBenefitPaymentsCurrentYear" xlink:label="loc_fnlc_ExpectedFutureBenefitPaymentsCurrentYear_A4D3DF85D3B5FCC06AC14875F865DA8D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear_59EEF51CEFAE6DBB44A94875F86612F9_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear_59EEF51CEFAE6DBB44A94875F86612F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated plan expense</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_BC9213492602A56303408901F32E1D77_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_BC9213492602A56303408901F32E1D77" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of securities available for sale</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:label="loc_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_118ED938D398F6F6BC528901F32E343D" xlink:type="locator" />
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    <link:label id="lab_fnlc_RedemptionOfRestrictedEquitySecurities_3A64E024F585A7A981888901F32E82AF_terseLabel_en-US" xlink:label="lab_fnlc_RedemptionOfRestrictedEquitySecurities_3A64E024F585A7A981888901F32E82AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption of restricted equity securities</link:label>
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    <link:label id="lab_fnlc_RedemptionOfRestrictedEquitySecurities_3A64E024F585A7A981888901F32E82AF_documentation_en-US" xlink:label="lab_fnlc_RedemptionOfRestrictedEquitySecurities_3A64E024F585A7A981888901F32E82AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Redemption of stock held at Federal Home Loan Bank of Federal Reserve Bank. Federal Home Loan Bank (FHLB) stock and Federal Reserve Bank Stock represents an equity interest in a FHLB of FRB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_ECAA061574E2A56F98F88901F32F2817_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_ECAA061574E2A56F98F88901F32F2817" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchase of restricted equity securities</link:label>
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    <link:label id="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_BA9023925F8B56CE27F48901F32FD4BA_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_BA9023925F8B56CE27F48901F32FD4BA" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net increase in loans</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_BA9023925F8B56CE27F48901F32FD4BA_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_BA9023925F8B56CE27F48901F32FD4BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Loans and Leases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases" xlink:label="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_BA9023925F8B56CE27F48901F32FD4BA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_A362A2F1685F0927A23E8901F32F7094_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_A362A2F1685F0927A23E8901F32F7094" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_A362A2F1685F0927A23E8901F32F7094" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_6DC239A1B4E8E25DAD6F8901F32F41E9_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_6DC239A1B4E8E25DAD6F8901F32F41E9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used by investing activities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_6DC239A1B4E8E25DAD6F8901F32F41E9" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_B102F381761CD7E7208B8901F32F0F79_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_B102F381761CD7E7208B8901F32F0F79" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from financing activities</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInDeposits_20C0D3FB0A33620939A58901F32F3E13_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeposits_20C0D3FB0A33620939A58901F32F3E13" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net decrease in demand, savings, and money market accounts</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_BFF80F29C7343CFD00BC8901F330967B_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_BFF80F29C7343CFD00BC8901F330967B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net increase in short-term borrowings</link:label>
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    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_9A2B73CCEC94C9B13C848901F3304B4F_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_9A2B73CCEC94C9B13C848901F3304B4F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Payment to repurchase common stock</link:label>
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