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  <xs:element id="tcbk_ScheduleOfWeightedAverageLeaseTermAndDiscountRateRelatedToOperatingLeaseTableTextBlock" abstract="false" name="ScheduleOfWeightedAverageLeaseTermAndDiscountRateRelatedToOperatingLeaseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tcbk_SummaryOfOtherBorrowingsTableTextBlock" abstract="false" name="SummaryOfOtherBorrowingsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tcbk_SummaryOfBanksCommitmentsAndContingentLiabilitiesTableTextBlock" abstract="false" name="SummaryOfBanksCommitmentsAndContingentLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tcbk_ComponentsOfOtherNoninterestIncomeTableTextBlock" abstract="false" name="ComponentsOfOtherNoninterestIncomeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tcbk_QuantitativeInformationFairValueMeasurementsForFinancialInstrumentsMeasuredAtFairValueOnNonrecurringBasisLevelThreeTableTextBlock" abstract="false" name="QuantitativeInformationFairValueMeasurementsForFinancialInstrumentsMeasuredAtFairValueOnNonrecurringBasisLevelThreeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tcbk_EstimatedFairValuesOfFinancialInstrumentsThatAreReportedAtAmortizedCostInConsolidatedBalanceSheetsTableTextBlock" abstract="false" name="EstimatedFairValuesOfFinancialInstrumentsThatAreReportedAtAmortizedCostInConsolidatedBalanceSheetsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="tcbk_SignificantAccountingPoliciesTable" abstract="true" name="SignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_SignificantAccountingPoliciesLineItems" abstract="true" name="SignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_NumberOfCountiesBankOperates" abstract="false" name="NumberOfCountiesBankOperates" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tcbk_NumberOfSubsidiaryBusinessTrust" abstract="false" name="NumberOfSubsidiaryBusinessTrust" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tcbk_NonaccrualStatusLoansContractualPastDue" abstract="false" name="NonaccrualStatusLoansContractualPastDue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="tcbk_NonAgencyCollateralizedMortgageObligationsMember" abstract="true" name="NonAgencyCollateralizedMortgageObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_InvestmentSecuritiesTable" abstract="true" name="InvestmentSecuritiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_InvestmentSecuritiesLineItems" abstract="true" name="InvestmentSecuritiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_SecuritiesPledgedAsCollateral" abstract="false" name="SecuritiesPledgedAsCollateral" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_LifeOfMortgageBackedSecurities" abstract="false" name="LifeOfMortgageBackedSecurities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="tcbk_PercentageOfAggregateDepreciationInUnrealizedLosses" abstract="false" name="PercentageOfAggregateDepreciationInUnrealizedLosses" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="tcbk_DebtSecuritiesHeldToMaturityUnrealizedAccumulatedLoss" abstract="false" name="DebtSecuritiesHeldToMaturityUnrealizedAccumulatedLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CreditRatingAxis" abstract="true" name="CreditRatingAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_CreditRatingDomain" abstract="true" name="CreditRatingDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_AAAAAAMember" abstract="true" name="AAAAAAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_BBBBBBMember" abstract="true" name="BBBBBBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_CRENonOwnerOccupiedMember" abstract="true" name="CRENonOwnerOccupiedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_CREOwnerOccupiedMember" abstract="true" name="CREOwnerOccupiedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_AgricultureLoanMember" abstract="true" name="AgricultureLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_SFR141stDTLiensMember" abstract="true" name="SFR141stDTLiensMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_OtherLoansMember" abstract="true" name="OtherLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_CommercialAndIndustrialPortfolioSegmentMember" abstract="true" name="CommercialAndIndustrialPortfolioSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_ConstructionPortfolioSegmentMember" abstract="true" name="ConstructionPortfolioSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_AgricultureProductionPortfolioSegmentMember" abstract="true" name="AgricultureProductionPortfolioSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_OffBalanceSheetCreditLossWriteoff" abstract="false" name="OffBalanceSheetCreditLossWriteoff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_OffBalanceSheetCreditLossRecovery" abstract="false" name="OffBalanceSheetCreditLossRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CreditLossRollForward" abstract="true" name="CreditLossRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_CreditLossAllowanceForCreditLoss" abstract="false" name="CreditLossAllowanceForCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CreditLossAllowanceForCreditLossWriteoff" abstract="false" name="CreditLossAllowanceForCreditLossWriteoff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CreditLossAllowanceForCreditLossRecovery" abstract="false" name="CreditLossAllowanceForCreditLossRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CreditLossExpenseReversal" abstract="false" name="CreditLossExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_FinancingReceivableThresholdForLoanAnalysis" abstract="false" name="FinancingReceivableThresholdForLoanAnalysis" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_LoansReceivableImpairedInterestLostOnNonaccrualLoans" abstract="false" name="LoansReceivableImpairedInterestLostOnNonaccrualLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_FinancingReceivableNonaccrualNoAllowanceIncludingGuaranteedLoans" abstract="false" name="FinancingReceivableNonaccrualNoAllowanceIncludingGuaranteedLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_FinancingReceivableNonaccrualIncludingGuaranteedLoans" abstract="false" name="FinancingReceivableNonaccrualIncludingGuaranteedLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CollateralPledgedAndUnsecuredMember" abstract="true" name="CollateralPledgedAndUnsecuredMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_OfficeMember" abstract="true" name="OfficeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_MultifamilyCollateralMember" abstract="true" name="MultifamilyCollateralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_FarmlandMember" abstract="true" name="FarmlandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_SFRFirstDeedMember" abstract="true" name="SFRFirstDeedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_SFRSecondDeedMember" abstract="true" name="SFRSecondDeedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_AccountsReceivableAndInventoryMember" abstract="true" name="AccountsReceivableAndInventoryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_VariableLeaseCostIncome" abstract="false" name="VariableLeaseCostIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet" abstract="false" name="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_TimeDeposits250000OrMore" abstract="false" name="TimeDeposits250000OrMore" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_OtherTimeCertificatesDeposits" abstract="false" name="OtherTimeCertificatesDeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_ZeroPointZeroFiveFixedRateCollateralizedBorrowingsMember" abstract="true" name="ZeroPointZeroFiveFixedRateCollateralizedBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_TriCoCapitalTrustIMember" abstract="true" name="TriCoCapitalTrustIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_TriCoCapitalTrustTwoMember" abstract="true" name="TriCoCapitalTrustTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_PreferredSecuritiesRedeemableInterestRate" abstract="false" name="PreferredSecuritiesRedeemableInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="tcbk_DepositAccountOverdraftPrivilegeMember" abstract="true" name="DepositAccountOverdraftPrivilegeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_CommonClassB2Member" abstract="true" name="CommonClassB2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_TwoThousandTwentyFiveStockRepurchasePlanMember" abstract="true" name="TwoThousandTwentyFiveStockRepurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_EquityCompensationPlansMember" abstract="true" name="EquityCompensationPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_OtherShareBasedAwardsMember" abstract="true" name="OtherShareBasedAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsTenderedByEmployeesAndDirectors" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsTenderedByEmployeesAndDirectors" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tcbk_TwoThousandTwentyFourPlanMember" abstract="true" name="TwoThousandTwentyFourPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_TwoThousandNineteenPlanMember" abstract="true" name="TwoThousandNineteenPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_ServiceConditionRestrictedStockUnitsMember" abstract="true" name="ServiceConditionRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_RestrictedStockUnitsMarketConditionMember" abstract="true" name="RestrictedStockUnitsMarketConditionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleaseInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleaseInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tcbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCreditedFromDividends" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCreditedFromDividends" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tcbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedOrExpiredInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedOrExpiredInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tcbk_ScheduleOfOtherNoninterestIncomeAndExpenseTable" abstract="true" name="ScheduleOfOtherNoninterestIncomeAndExpenseTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_ExcessMortgageServicingRightsMember" abstract="true" name="ExcessMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_ScheduleOfOtherNoninterestIncomeAndExpenseLineItems" abstract="true" name="ScheduleOfOtherNoninterestIncomeAndExpenseLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tcbk_SaleOfCustomerChecks" abstract="false" name="SaleOfCustomerChecks" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_GainLossOnMarketableEquitySecuritiesNet" abstract="false" name="GainLossOnMarketableEquitySecuritiesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_OperatingInterestIncomeOther" abstract="false" name="OperatingInterestIncomeOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_BaseSalariesNetOfDeferredLoanOriginationCosts" abstract="false" name="BaseSalariesNetOfDeferredLoanOriginationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_IncentiveCompensationExpense" abstract="false" name="IncentiveCompensationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_LaborAndRelatedExpenseExcludingMergerRelatedCosts" abstract="false" name="LaborAndRelatedExpenseExcludingMergerRelatedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_NetworkCharges" abstract="false" name="NetworkCharges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_RegulatoryAssessmentsAndInsurance" abstract="false" name="RegulatoryAssessmentsAndInsurance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_OperationalLosses" abstract="false" name="OperationalLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CourierService" abstract="false" name="CourierService" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_GainLossOnForeclosedAssetsExcludingTransferOfLoans1" abstract="false" name="GainLossOnForeclosedAssetsExcludingTransferOfLoans1" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_OtherOperatingExpenses" abstract="false" name="OtherOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_OtherNoninterestExpenseExcludingMergerRelatedCosts" abstract="false" name="OtherNoninterestExpenseExcludingMergerRelatedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_AccumulatedJointBeneficiaryAgreementLiabilityAttributableToParentMember" abstract="true" name="AccumulatedJointBeneficiaryAgreementLiabilityAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_NumberOfInvestmentSecuritiesClassifiedAsLevel3" abstract="false" name="NumberOfInvestmentSecuritiesClassifiedAsLevel3" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tcbk_LoanChargedOffCarryingValue" abstract="false" name="LoanChargedOffCarryingValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_CorporateBondsMember" abstract="true" name="CorporateBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_MortgageServicingRightsMember" abstract="true" name="MortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_CollateralDependentLoansMember" abstract="true" name="CollateralDependentLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_ForeclosedAssetsMember" abstract="true" name="ForeclosedAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_RealEstateOwnedMember" abstract="true" name="RealEstateOwnedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_LossesFromFairValueAdjustmentsAssetsAndLiabilities" abstract="false" name="LossesFromFairValueAdjustmentsAssetsAndLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_RealEstateOwnedResidentialRealEstateMember" abstract="true" name="RealEstateOwnedResidentialRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_OtherDepositsFairValueDisclosure" abstract="false" name="OtherDepositsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_BaselThreeFullyPhasedInMember" abstract="true" name="BaselThreeFullyPhasedInMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets" abstract="false" name="CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="tcbk_CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets" abstract="false" name="CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="tcbk_ReportableSegmentMember" abstract="true" name="ReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_InterestAndNonInterestIncomeExpenseNet" abstract="false" name="InterestAndNonInterestIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_ProvisionForBenefitFromProvisionsForCredit" abstract="false" name="ProvisionForBenefitFromProvisionsForCredit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_OtherNonSegmentAssets" abstract="false" name="OtherNonSegmentAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tcbk_FirstHawaiianInc.Member" abstract="true" name="FirstHawaiianInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tcbk_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare" abstract="false" name="BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
</xs:schema>
