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  <xs:element id="lkfn_FinancialAsset30To89DaysPastDueMember" abstract="true" name="FinancialAsset30To89DaysPastDueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_FinancingReceivableAmortizedCostAgingAbstract" abstract="true" name="FinancingReceivableAmortizedCostAgingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_FinancingReceivableAmortizedCostBeforeAllowanceForCreditLossExcludingAccruedInterest" abstract="false" name="FinancingReceivableAmortizedCostBeforeAllowanceForCreditLossExcludingAccruedInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_FinancingReceivableAmortizedCost90DaysOrMorePastDueStillAccruing" abstract="false" name="FinancingReceivableAmortizedCost90DaysOrMorePastDueStillAccruing" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_FinancingReceivableAmortizedCostNonaccrual" abstract="false" name="FinancingReceivableAmortizedCostNonaccrual" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_FinancingReceivableAmortizedCostNonaccrualWithNoAllowanceOfCreditLoss" abstract="false" name="FinancingReceivableAmortizedCostNonaccrualWithNoAllowanceOfCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_CollateralDependentLoansMember" abstract="true" name="CollateralDependentLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_FinancingReceivableRealEstateAmortizedCost" abstract="false" name="FinancingReceivableRealEstateAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_FinancingReceivableGeneralBusinessAssetsAmortizedCost" abstract="false" name="FinancingReceivableGeneralBusinessAssetsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_FinancingReceivableAmortizedCostOther" abstract="false" name="FinancingReceivableAmortizedCostOther" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_FinancingReceivableCollateralDependentBorrowingsAmortizedCost" abstract="false" name="FinancingReceivableCollateralDependentBorrowingsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_FixedRateBulletAdvanceDueSeptember2026Member" abstract="true" name="FixedRateBulletAdvanceDueSeptember2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_FixedRateBulletAdvanceDueMarch2035Member" abstract="true" name="FixedRateBulletAdvanceDueMarch2035Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_UnsecuredRevolvingCreditAgreementMember" abstract="true" name="UnsecuredRevolvingCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_FederalHomeLoanBankStockOutstanding" abstract="false" name="FederalHomeLoanBankStockOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_AssetsPledgedAsCollateralForLoansReceivableTable" abstract="true" name="AssetsPledgedAsCollateralForLoansReceivableTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_CommercialRealEstatesMember" abstract="true" name="CommercialRealEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_InventoryFinishedGoodsMember" abstract="true" name="InventoryFinishedGoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_FinishedGoodsMember" abstract="true" name="FinishedGoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_InventoryWorkInProcessMember" abstract="true" name="InventoryWorkInProcessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_MarketableSecuritiesMember" abstract="true" name="MarketableSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_AssetsPledgedAsCollateralForLoansReceivableLineItems" abstract="true" name="AssetsPledgedAsCollateralForLoansReceivableLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_PercentageOfVariance" abstract="false" name="PercentageOfVariance" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="lkfn_AmountOfVariance" abstract="false" name="AmountOfVariance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_PercentageOfDiscountFromAppraisedValue" abstract="false" name="PercentageOfDiscountFromAppraisedValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="lkfn_WeightedAverageMaturityOfResidentialMortgages" abstract="false" name="WeightedAverageMaturityOfResidentialMortgages" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="lkfn_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueQualitativeInformationPrepaymentSpeed" abstract="false" name="ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueQualitativeInformationPrepaymentSpeed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="lkfn_AssetsMeasuredAtFairValueOnRecurringBasisAbstract" abstract="true" name="AssetsMeasuredAtFairValueOnRecurringBasisAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_UsTreasurySecuritiesFairValueDisclosure" abstract="false" name="UsTreasurySecuritiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_UsGovernmentAgenciesSecuritiesFairValueDisclosure" abstract="false" name="UsGovernmentAgenciesSecuritiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_MortgageBackedSecuritiesResidentialAvailableForSaleFairValueDisclosure" abstract="false" name="MortgageBackedSecuritiesResidentialAvailableForSaleFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_StateAndMunicipalSecuritiesFairValueDisclosure" abstract="false" name="StateAndMunicipalSecuritiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_AgribusinessAndAgriculturalMember" abstract="true" name="AgribusinessAndAgriculturalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_OpenEndAndJuniorLineLoansMember" abstract="true" name="OpenEndAndJuniorLineLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_ImpairedLoansFairValueDisclosure" abstract="false" name="ImpairedLoansFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_ValuationMethodologyAndUnobservableInputsForLevel3AssetsMeasuredAtFairValueTable" abstract="true" name="ValuationMethodologyAndUnobservableInputsForLevel3AssetsMeasuredAtFairValueTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_Consumer14FamilyMortgageLoansMember" abstract="true" name="Consumer14FamilyMortgageLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_ValuationCollateralBasedMeasurementsMember" abstract="true" name="ValuationCollateralBasedMeasurementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lkfn_ValuationMethodologyAndUnobservableInputsForLevel3AssetsMeasuredAtFairValueLineItems" abstract="true" name="ValuationMethodologyAndUnobservableInputsForLevel3AssetsMeasuredAtFairValueLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_ImpairedLoansMeasurementInput" abstract="false" name="ImpairedLoansMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="lkfn_EstimatedFairValueAndRelatedCarryingValueOfFinancialInstrumentsAbstract" abstract="true" name="EstimatedFairValueAndRelatedCarryingValueOfFinancialInstrumentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_MortgageBankingDerivativeAssetsFairValueDisclosure" abstract="false" name="MortgageBankingDerivativeAssetsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_InvestmentInFederalReserveAndFederalHomeLoanBankStockFairValueDisclosure" abstract="false" name="InvestmentInFederalReserveAndFederalHomeLoanBankStockFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_AccruedInterestReceivableFairValue" abstract="false" name="AccruedInterestReceivableFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_CertificatesOfDepositFairValue" abstract="false" name="CertificatesOfDepositFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_AllOtherDepositsFairValue" abstract="false" name="AllOtherDepositsFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_MortgageBankingDerivativeLiabilitiesFairValueDisclosure" abstract="false" name="MortgageBankingDerivativeLiabilitiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_AccruedInterestPayableFairValueCurrent" abstract="false" name="AccruedInterestPayableFairValueCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_OffsettingAssetsAndLiabilitiesTable" abstract="true" name="OffsettingAssetsAndLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_OffsettingAssetsAndLiabilitiesLineItems" abstract="true" name="OffsettingAssetsAndLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lkfn_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_EffectiveIncomeTaxRateReconciliationTaxCreditsNetOfAmortizationAndLossesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxCreditsNetOfAmortizationAndLossesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAndDeferredCompensationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAndDeferredCompensationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_EffectiveIncomeTaxRateReconciliationTaxCreditsNetOfAmortizationAndLossesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxCreditsNetOfAmortizationAndLossesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="lkfn_EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAndDeferredCompensationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAndDeferredCompensationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="lkfn_DeferredTaxAssetsUnrealizedGainLossesOnAvailableForSaleSecuritiesGross" abstract="false" name="DeferredTaxAssetsUnrealizedGainLossesOnAvailableForSaleSecuritiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits" abstract="false" name="DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxAssetsBadDebts" abstract="false" name="DeferredTaxAssetsBadDebts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxAssetsNonaccrualLoanInterest" abstract="false" name="DeferredTaxAssetsNonaccrualLoanInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxAssetsLongTermIncentivePlan" abstract="false" name="DeferredTaxAssetsLongTermIncentivePlan" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxAssetsLeaseLiability" abstract="false" name="DeferredTaxAssetsLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxAssetsDeferredLoanFees" abstract="false" name="DeferredTaxAssetsDeferredLoanFees" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxLiabilitiesStateTaxes" abstract="false" name="DeferredTaxLiabilitiesStateTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxLiabilitiesSpillOverDividend" abstract="false" name="DeferredTaxLiabilitiesSpillOverDividend" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lkfn_DeferredTaxLiabilitiesLeaseRightOfUseAssets" abstract="false" name="DeferredTaxLiabilitiesLeaseRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
