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  <xs:element id="pstl_DebtInstrumentBasisSpreadOnVariableRateIncreaseDecrease" abstract="false" name="DebtInstrumentBasisSpreadOnVariableRateIncreaseDecrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pstl_LineOfCreditFacilityNumberOfOptionsToExtend" abstract="false" name="LineOfCreditFacilityNumberOfOptionsToExtend" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="pstl_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentageThreshold" abstract="false" name="LineOfCreditFacilityUnusedCapacityCommitmentFeePercentageThreshold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pstl_DebtInstrumentVariableRateAdjustment" abstract="false" name="DebtInstrumentVariableRateAdjustment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pstl_DebtInstrumentVariableRateFloor" abstract="false" name="DebtInstrumentVariableRateFloor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pstl_DebtInstrumentNumberOfPropertiesCollateralizedUnderLoan" abstract="false" name="DebtInstrumentNumberOfPropertiesCollateralizedUnderLoan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_DebtInstrumentRemainingPercentageCollateralizedUnderLoan" abstract="false" name="DebtInstrumentRemainingPercentageCollateralizedUnderLoan" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pstl_DebtInstrumentInterestRateFixedRatePeriod" abstract="false" name="DebtInstrumentInterestRateFixedRatePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_DebtInstrumentFixedInterestPeriod" abstract="false" name="DebtInstrumentFixedInterestPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_DebtInstrumentRemainingDiscountAmortizationPeriod" abstract="false" name="DebtInstrumentRemainingDiscountAmortizationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_WeightedAverageMaturityDateForSecuredBorrowingTerm" abstract="false" name="WeightedAverageMaturityDateForSecuredBorrowingTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_DebtInstrumentModificationFees" abstract="false" name="DebtInstrumentModificationFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_DerivativeLiabilityPotentialSettlementPayment" abstract="false" name="DerivativeLiabilityPotentialSettlementPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveMay2022MaturityOfJanuary2027Member" abstract="true" name="InterestRateSwapEffectiveMay2022MaturityOfJanuary2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveMay2022MaturityOfFebruary2028Member" abstract="true" name="InterestRateSwapEffectiveMay2022MaturityOfFebruary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveMay2022MaturityOfFebruary2028TwoMember" abstract="true" name="InterestRateSwapEffectiveMay2022MaturityOfFebruary2028TwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveJuly2022MaturityOfFebruary2028Member" abstract="true" name="InterestRateSwapEffectiveJuly2022MaturityOfFebruary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveDecember2022MaturityOfFebruary2028Member" abstract="true" name="InterestRateSwapEffectiveDecember2022MaturityOfFebruary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveJuly2023MaturityOfJanuary2027Member" abstract="true" name="InterestRateSwapEffectiveJuly2023MaturityOfJanuary2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveSeptember2023MaturityOfFebruary2028Member" abstract="true" name="InterestRateSwapEffectiveSeptember2023MaturityOfFebruary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveOctober2024MaturityOfFebruary2028Member" abstract="true" name="InterestRateSwapEffectiveOctober2024MaturityOfFebruary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveNovember2024MaturityOfFebruary2028Member" abstract="true" name="InterestRateSwapEffectiveNovember2024MaturityOfFebruary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveSeptember2025MaturityOfJanuary2030Member" abstract="true" name="InterestRateSwapEffectiveSeptember2025MaturityOfJanuary2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_InterestRateSwapEffectiveSeptember2025MaturityOfJanuary203030MMember" abstract="true" name="InterestRateSwapEffectiveSeptember2025MaturityOfJanuary203030MMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_LessorDirectFinancingLeaseNumber" abstract="false" name="LessorDirectFinancingLeaseNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetNumber" abstract="false" name="LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetNumberPurchasePriceGreaterThanValueOfUnderlyingAsset" abstract="false" name="LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetNumberPurchasePriceGreaterThanValueOfUnderlyingAsset" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetAggregateCarryingValue" abstract="false" name="LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetAggregateCarryingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetPurchasePriceGreaterThanValueOfUnderlyingAssetsAggregatePurchasePrice" abstract="false" name="LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetPurchasePriceGreaterThanValueOfUnderlyingAssetsAggregatePurchasePrice" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetNumberPurchasePriceLessThanOrEqualToUnderlyingAsset" abstract="false" name="LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetNumberPurchasePriceLessThanOrEqualToUnderlyingAsset" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetsNumberPurchasePriceLessThanOrEqualToUnderlyingAssetConsideration" abstract="false" name="LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAssetsNumberPurchasePriceLessThanOrEqualToUnderlyingAssetConsideration" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_LessorOperatingLeasePaymentsToBeReceivedAfterYearFour" abstract="false" name="LessorOperatingLeasePaymentsToBeReceivedAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_NumberOfExpiredLeases" abstract="false" name="NumberOfExpiredLeases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_SalesTypeAndDirectFinancingLeasesLeaseReceivableToBeReceivedAfterYearFour" abstract="false" name="SalesTypeAndDirectFinancingLeasesLeaseReceivableToBeReceivedAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_RelatedPartyTransactionsDetailsTable" abstract="true" name="RelatedPartyTransactionsDetailsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="pstl_InitialManagementFeeRatePerAnnumOfPropertysGrossRevenueMember" abstract="true" name="InitialManagementFeeRatePerAnnumOfPropertysGrossRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_IncreaseInManagementFeeMember" abstract="true" name="IncreaseInManagementFeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_PostalRealtyManagementMember" abstract="false" name="PostalRealtyManagementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_AndrewSpodekChiefExecutiveOfficerMember" abstract="true" name="AndrewSpodekChiefExecutiveOfficerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_RelatedPartyTransactionsDetailsLineItems" abstract="true" name="RelatedPartyTransactionsDetailsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="pstl_ContractTerm" abstract="false" name="ContractTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_AdvanceNoticeOfNonRenewalPeriod" abstract="false" name="AdvanceNoticeOfNonRenewalPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_ContractTerminationNoticePeriod" abstract="false" name="ContractTerminationNoticePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_PropertyManagementFee" abstract="false" name="PropertyManagementFee" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_ManagementFeeIncome" abstract="false" name="ManagementFeeIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_ManagementFeeReceivable" abstract="false" name="ManagementFeeReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_NumberOfPostalPropertiesAcquired" abstract="false" name="NumberOfPostalPropertiesAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_NumberOfPropertiesWithRightOfFirstOffer" abstract="false" name="NumberOfPropertiesWithRightOfFirstOffer" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_CommonStockConvertibleConversionRatio" abstract="false" name="CommonStockConvertibleConversionRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pstl_StockholdersEquityDetailsTable" abstract="true" name="StockholdersEquityDetailsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="pstl_AtTheMarketOfferingProgramMember" abstract="true" name="AtTheMarketOfferingProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_StockholdersEquityDetailsLineItems" abstract="true" name="StockholdersEquityDetailsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="pstl_SaleOfStockConsiderationAuthorized" abstract="false" name="SaleOfStockConsiderationAuthorized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_AtTheMarketProgramWithForwardSalesAgreementsMember" abstract="true" name="AtTheMarketProgramWithForwardSalesAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_SaleOfStockNumberOfSharesSoldInTransaction" abstract="false" name="SaleOfStockNumberOfSharesSoldInTransaction" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pstl_SaleOfStockEstimatedRemainingGrossProceeds" abstract="false" name="SaleOfStockEstimatedRemainingGrossProceeds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_SaleOfStockAveragePricePerShare" abstract="false" name="SaleOfStockAveragePricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="pstl_SaleOfStockOtherCostsIncurred" abstract="false" name="SaleOfStockOtherCostsIncurred" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_EmployeeMember" abstract="true" name="EmployeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_LongTermIncentivePlanMember" abstract="true" name="LongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_OPAndLPUnitsMember" abstract="true" name="OPAndLPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_LongTermIncentiveUnitMember" abstract="true" name="LongTermIncentiveUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_OPUnitsMember" abstract="true" name="OPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_OperatingPartnerOPMember" abstract="true" name="OperatingPartnerOPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationDeferral" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationDeferral" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pstl_NoncontrollingInterestsOpUnits" abstract="false" name="NoncontrollingInterestsOpUnits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pstl_NoncontrollingInterestLtipUnits" abstract="false" name="NoncontrollingInterestLtipUnits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pstl_OutstandingPartnershipPercentage" abstract="false" name="OutstandingPartnershipPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConversionsInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConversionsInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pstl_EmployeesAndConsultantsMember" abstract="true" name="EmployeesAndConsultantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformancePeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformancePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pstl_EmployeeBenefitsAndShareBasedCompensationPortionIncludedInGeneralAndAdministrativeExpenses" abstract="false" name="EmployeeBenefitsAndShareBasedCompensationPortionIncludedInGeneralAndAdministrativeExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_EmployeeBenefitsAndShareBasedCompensationPortionIncludedInPropertyOperatingExpenses" abstract="false" name="EmployeeBenefitsAndShareBasedCompensationPortionIncludedInPropertyOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_StockholdersEquityDetailsScheduleofunvestedsharesofrestrictedstockTable" abstract="true" name="StockholdersEquityDetailsScheduleofunvestedsharesofrestrictedstockTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="pstl_MarketBasedRSUsMember" abstract="true" name="MarketBasedRSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_TimeBasedRSUsMember" abstract="true" name="TimeBasedRSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_PerformanceBasedRSUsMember" abstract="true" name="PerformanceBasedRSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_CertainOfficersAndEmployeesMember" abstract="true" name="CertainOfficersAndEmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_OfficersAndEmployeeMember" abstract="true" name="OfficersAndEmployeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_StockholdersEquityDetailsScheduleofunvestedsharesofrestrictedstockLineItems" abstract="true" name="StockholdersEquityDetailsScheduleofunvestedsharesofrestrictedstockLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEarnedInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEarnedInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEarnedInPeriodWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEarnedInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConversionToCommonStockWeightedAveragePricePerShare" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConversionToCommonStockWeightedAveragePricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingNumber" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformanceTargetEarnedPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformanceTargetEarnedPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pstl_ShareBasedCompensationArrangementWithheldRestrictedShares" abstract="false" name="ShareBasedCompensationArrangementWithheldRestrictedShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pstl_EmployeeStockPurchasePlanMember" abstract="false" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pstl_RecognizedCompensationExpense" abstract="false" name="RecognizedCompensationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_NumberOfPostalPropertiesToBeAcquired" abstract="false" name="NumberOfPostalPropertiesToBeAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pstl_PurchaseOfPropertyPlantAndEquipmentEstimatedCost" abstract="false" name="PurchaseOfPropertyPlantAndEquipmentEstimatedCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pstl_AndrewSpodekMember" abstract="true" name="AndrewSpodekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
