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<!-- Creation Date      : 2020-10-27T13:03:31.9559965+00:00 -->
<!-- Version            : 5.0.1.513 -->
<!-- Package ID         : 8607dbd1dbba4142bcd04cdfe62d6647 -->
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    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
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    <link:label xml:lang="en-US" xlink:label="maa_BuildingsImprovementsAndOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing, equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. Also includes amount of investment in certain other real estate investments not specifically identified elsewhere in the existing taxonomy.</link:label>
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    <link:label xml:lang="en-US" xlink:label="maa_GainLossOnSaleOfNonDepreciableRealEstateAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain (loss) on sale of non depreciable real estate assets.</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_PreferredUnitDividendsIncomeStatementImpact" xlink:type="locator" xlink:label="maa_PreferredUnitDividendsIncomeStatementImpact" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_GainonSaleofNonDepreciableAssets" xlink:type="locator" xlink:label="maa_GainonSaleofNonDepreciableAssets" />
    <link:label xml:lang="en-US" xlink:label="maa_GainonSaleofNonDepreciableAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain on Sale of Non-Depreciable Assets</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_PaymentsToAcquireRealEstateAndOtherAssets" xlink:type="locator" xlink:label="maa_PaymentsToAcquireRealEstateAndOtherAssets" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_IncomeLossFromContinuingOperationsAllocatedToUnvestedRestrictedShares" xlink:type="locator" xlink:label="maa_IncomeLossFromContinuingOperationsAllocatedToUnvestedRestrictedShares" />
    <link:label xml:lang="en-US" xlink:label="maa_IncomeLossFromContinuingOperationsAllocatedToUnvestedRestrictedShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income (loss) from continuing operations allocated to unvested restricted shares.</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_IncomeFromContinuingOperationsAllocatedToUnvestedRestrictedShares" xlink:type="locator" xlink:label="maa_IncomeFromContinuingOperationsAllocatedToUnvestedRestrictedShares" />
    <link:label xml:lang="en-US" xlink:label="maa_IncomeFromContinuingOperationsAllocatedToUnvestedRestrictedShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income from continuing operations allocated to unvested restricted shares</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_IncomefromContinuingOperationsIncludingPortionAttributabletoNoncontrollingInterest" xlink:type="locator" xlink:label="maa_IncomefromContinuingOperationsIncludingPortionAttributabletoNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="maa_IncomefromContinuingOperationsIncludingPortionAttributabletoNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_IncomefromContinuingOperationsAttributabletoNoncontrollingInterest" xlink:type="locator" xlink:label="maa_IncomefromContinuingOperationsAttributabletoNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="maa_IncomefromContinuingOperationsAttributabletoNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income from Continuing Operations Attributable to Noncontrolling Interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_IncomefromContinuingOperationsAttributabletoNoncontrollingInterest" xlink:to="maa_IncomefromContinuingOperationsAttributabletoNoncontrollingInterest_lbl" />
    <link:loc xlink:href="maa-20200930.xsd#maa_OperatingIncomeBeforeDepreciation" xlink:type="locator" xlink:label="maa_OperatingIncomeBeforeDepreciation" />
    <link:label xml:lang="en-US" xlink:label="maa_OperatingIncomeBeforeDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents total operating revenues less property operating expenses, excluding depreciation.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:type="locator" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedPartnerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Limited Partner [Member]</link:label>
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFilerCategory" xlink:type="locator" xlink:label="dei_EntityFilerCategory" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:type="locator" xlink:label="dei_EntityCommonStockSharesOutstanding" />
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    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityShellCompany" xlink:type="locator" xlink:label="dei_EntityShellCompany" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total comprehensive income</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Comprehensive income attributable to noncontrolling interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_lbl" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Comprehensive income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax_lbl" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:type="locator" xlink:label="us-gaap_DepreciationDepletionAndAmortization" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:type="locator" xlink:label="us-gaap_GainLossOnDispositionOfAssets" />
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    <link:label xml:lang="en-US" xlink:label="maa_GainonSaleofNonDepreciableAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on sale of non-depreciable real estate assets</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:type="locator" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock compensation expense</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:type="locator" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by operating activities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDividendsMinorityInterest" xlink:type="locator" xlink:label="us-gaap_PaymentsOfDividendsMinorityInterest" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock" xlink:type="locator" xlink:label="us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DueToRelatedPartiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Due To Related Parties Current</link:label>
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    <link:label xml:lang="en-US" xlink:label="maa_BasicEarningsPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Basic earnings per unit.</link:label>
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    <link:label xml:lang="en-US" xlink:label="maa_MAAEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">MAA Equity.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockByClassTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_ScheduleOfRealEstateAssetAcquisitionsAndDispositionsTableTextBlock" xlink:type="locator" xlink:label="maa_ScheduleOfRealEstateAssetAcquisitionsAndDispositionsTableTextBlock" />
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    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis" xlink:type="locator" xlink:label="srt_OwnershipAxis" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_MAALPMember" xlink:type="locator" xlink:label="maa_MAALPMember" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_DevelopmentPropertiesMember" xlink:type="locator" xlink:label="maa_DevelopmentPropertiesMember" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetailMember" xlink:type="locator" xlink:label="us-gaap_RetailMember" />
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    <link:label xml:lang="en-US" xlink:label="maa_ExpectedCostsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Expected Costs [Member]</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_NumberOfUnitsUnderDevelopmentCommunity" xlink:type="locator" xlink:label="maa_NumberOfUnitsUnderDevelopmentCommunity" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_PercentageOfOwnershipInterests" xlink:type="locator" xlink:label="maa_PercentageOfOwnershipInterests" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_PercentageOfRentalRevenueAndOtherIncomeFromLeasingOfApartmentHomes" xlink:type="locator" xlink:label="maa_PercentageOfRentalRevenueAndOtherIncomeFromLeasingOfApartmentHomes" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_PercentageofRentalRevenueandOtherIncomeFromNonleasingActivities" xlink:type="locator" xlink:label="maa_PercentageofRentalRevenueandOtherIncomeFromNonleasingActivities" />
    <link:label xml:lang="en-US" xlink:label="maa_PercentageofRentalRevenueandOtherIncomeFromNonleasingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of Rental Revenue and Other Income From Non-leasing Activities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorOperatingLeaseTermOfContract" xlink:type="locator" xlink:label="us-gaap_LessorOperatingLeaseTermOfContract" />
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    <link:label xml:lang="en-US" xlink:label="maa_PercentageOfRentalRevenueAndOtherIncomeFromLeasingOfApartmentHomes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Rental Revenue And Other Income From Leasing Of Apartment Homes</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_PercentageOfReimbursableRevenueFromLeasingOfApartmentHomes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage Of Reimbursable Revenue From Leasing Of Apartment Homes</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_PercentageOfReimbursableRevenueFromLeasingOfApartmentHomes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Reimbursable Revenue From Leasing Of Apartment Homes</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_PercentageofRentalRevenueandOtherIncomeFromNonleasingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of Rental Revenue and Other Income From Non-leasing Activities</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_PercentageofRentalRevenueandOtherIncomeFromNonleasingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Percentageof Rental Revenueand Other Income From Nonleasing Activities</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Lease, Liability</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_AdjustedIncomeLossFromContinuingOperationsAvailableForCommonShareholdersBasic" xlink:type="locator" xlink:label="maa_AdjustedIncomeLossFromContinuingOperationsAvailableForCommonShareholdersBasic" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:type="locator" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_LimitedPartnershipUnitsMember" xlink:type="locator" xlink:label="maa_LimitedPartnershipUnitsMember" />
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    <link:label xml:lang="en-US" xlink:label="maa_IncomefromContinuingOperationsIncludingPortionAttributabletoNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incomefrom Continuing Operations Including Portion Attributableto Noncontrolling Interest</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_EarningsPerOPUnitofMAALPAbstract" xlink:type="locator" xlink:label="maa_EarningsPerOPUnitofMAALPAbstract" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:type="locator" xlink:label="us-gaap_AdditionalPaidInCapitalMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional Paid-in Capital [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid In Capital [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Distributions in Excess of Net Income [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:to="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Distributions In Excess Of Net Income [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss) [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_NoncontrollingInterestOperatingPartnershipMember" xlink:type="locator" xlink:label="maa_NoncontrollingInterestOperatingPartnershipMember" />
    <link:label xml:lang="en-US" xlink:label="maa_NoncontrollingInterestOperatingPartnershipMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Noncontrolling Interest Operating Partnership.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_NoncontrollingInterestOperatingPartnershipMember" xlink:to="maa_NoncontrollingInterestOperatingPartnershipMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_NoncontrollingInterestOperatingPartnershipMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest Operating Partnership</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NoncontrollingInterestOperatingPartnershipMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest Operating Partnership [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_NoncontrollingInterestMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestMember" xlink:to="us-gaap_NoncontrollingInterestMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_MidAmericaApartmentCommunitiesIncShareholdersEquityMember" xlink:type="locator" xlink:label="maa_MidAmericaApartmentCommunitiesIncShareholdersEquityMember" />
    <link:label xml:lang="en-US" xlink:label="maa_MidAmericaApartmentCommunitiesIncShareholdersEquityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Mid-America Apartment Communities, Inc. Shareholders&apos; Equity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_MidAmericaApartmentCommunitiesIncShareholdersEquityMember" xlink:to="maa_MidAmericaApartmentCommunitiesIncShareholdersEquityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_MidAmericaApartmentCommunitiesIncShareholdersEquityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mid America Apartment Communities Inc Shareholders Equity</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_MidAmericaApartmentCommunitiesIncShareholdersEquityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mid America Apartment Communities Inc Shareholders Equity [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_EquityLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_EquityLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (Decrease) in Stockholders&apos; Equity [Roll Forward]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Stockholders Equity Roll Forward</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_StockholdersEquityIncludingNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balance</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_StockholdersEquityIncludingNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity Including Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NetIncomeIncludingPortionAttributabletoNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Income Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NetIncomeIncludingPortionAttributabletoNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Including Portion Attributableto Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NetIncomeAttributabletoParent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income attributable to MAA</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NetIncomeAttributabletoParent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Attributableto Parent</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NetIncomeAttributabletoNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Income Attributable to Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NetIncomeAttributabletoNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Attributableto Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income (loss) - derivatives instruments (cash flow hedges)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance and registration of common shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value New Issues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:type="locator" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Shares repurchased and retired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:to="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased And Retired During Period Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of stock options</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Stock Options Exercised</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfUnits" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfUnits" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares issued in exchange for common units</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueConversionOfUnits" xlink:to="us-gaap_StockIssuedDuringPeriodValueConversionOfUnits_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Conversion Of Units</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_StockIssuedInExchangeForRedeemableStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares issued in exchange for redeemable stock</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_StockIssuedInExchangeForRedeemableStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued In Exchange For Redeemable Stock</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_EffectOnRetainedEarningsAccumulatedDeficitDueToFairValueOptionAndMeasurement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable stock fair market value adjustment</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_EffectOnRetainedEarningsAccumulatedDeficitDueToFairValueOptionAndMeasurement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Effect On Retained Earnings Accumulated Deficit Due To Fair Value Option And Measurement</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestPeriodIncreaseDecrease" xlink:type="locator" xlink:label="us-gaap_MinorityInterestPeriodIncreaseDecrease" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustment for noncontrolling interests in Operating Partnership</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestPeriodIncreaseDecrease" xlink:to="us-gaap_MinorityInterestPeriodIncreaseDecrease_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minority Interest Period Increase Decrease</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_AmortizationUnearnedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of unearned compensation</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_AmortizationUnearnedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Unearned Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsCommonStock" xlink:type="locator" xlink:label="us-gaap_DividendsCommonStock" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Dividends on common stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsCommonStock" xlink:to="us-gaap_DividendsCommonStock_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:type="locator" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Dividends on noncontrolling interest units</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minority Interest Decrease From Distributions To Noncontrolling Interest Holders</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PartnersCapitalAccountContributions" xlink:type="locator" xlink:label="us-gaap_PartnersCapitalAccountContributions" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contribution from noncontrolling interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountContributions" xlink:to="us-gaap_PartnersCapitalAccountContributions_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Partners Capital Account Contributions</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_StockholdersEquityIncludingNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:type="locator" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock, Dividends, Per Share, Declared</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockDividendsPerShareDeclared" xlink:to="us-gaap_CommonStockDividendsPerShareDeclared_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Dividends Per Share Declared</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_NetIncomeAvailableForCommonUnitholders" xlink:type="locator" xlink:label="maa_NetIncomeAvailableForCommonUnitholders" />
    <link:label xml:lang="en-US" xlink:label="maa_NetIncomeAvailableForCommonUnitholders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Net Income Available for Common Unitholders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_NetIncomeAvailableForCommonUnitholders" xlink:to="maa_NetIncomeAvailableForCommonUnitholders_lbl" />
    <link:loc xlink:href="maa-20200930.xsd#maa_UnitsIssuedDuringPeriodValueNewIssuesNet" xlink:type="locator" xlink:label="maa_UnitsIssuedDuringPeriodValueNewIssuesNet" />
    <link:label xml:lang="en-US" xlink:label="maa_UnitsIssuedDuringPeriodValueNewIssuesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Units Issued during period value new issues net.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInPartnersCapitalRollForward" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInPartnersCapitalRollForward" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PartnersCapital" xlink:type="locator" xlink:label="us-gaap_PartnersCapital" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAllocatedToLimitedPartners" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Longterm Debt Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:type="locator" xlink:label="us-gaap_UnsecuredDebtMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnsecuredDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnsecuredDebtMember" xlink:to="us-gaap_UnsecuredDebtMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnsecuredDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unsecured Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SecuredDebtMember" xlink:type="locator" xlink:label="us-gaap_SecuredDebtMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SecuredDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Secured Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredDebtMember" xlink:to="us-gaap_SecuredDebtMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SecuredDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Secured Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPaperMember" xlink:type="locator" xlink:label="us-gaap_CommercialPaperMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommercialPaperMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial Paper Notes [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommercialPaperMember" xlink:to="us-gaap_CommercialPaperMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommercialPaperMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Commercial Paper [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_A1BillionUnsecuredRevolvingCreditFaciltiyMember" xlink:type="locator" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFaciltiyMember" />
    <link:label xml:lang="en-US" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFaciltiyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">$1 billion unsecured revolving credit faciltiy [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_A1BillionUnsecuredRevolvingCreditFaciltiyMember" xlink:to="maa_A1BillionUnsecuredRevolvingCreditFaciltiyMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFaciltiyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">$1 billion unsecured revolving credit facility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFaciltiyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">A1 Billion Unsecured Revolving Credit Faciltiy [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_DebtInformationAxis" xlink:type="locator" xlink:label="maa_DebtInformationAxis" />
    <link:label xml:lang="en-US" xlink:label="maa_DebtInformationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt Information [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_DebtInformationAxis" xlink:to="maa_DebtInformationAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_DebtInformationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Information</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_DebtInformationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Information [Axis]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_DebtInformationDomain" xlink:type="locator" xlink:label="maa_DebtInformationDomain" />
    <link:label xml:lang="en-US" xlink:label="maa_DebtInformationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt Information [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_DebtInformationDomain" xlink:to="maa_DebtInformationDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_DebtInformationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Information</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_DebtInformationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Information [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_VariableRateCreditFacilityMember" xlink:type="locator" xlink:label="maa_VariableRateCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="maa_VariableRateCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable Rate Credit Facility [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_VariableRateCreditFacilityMember" xlink:to="maa_VariableRateCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_VariableRateCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate Credit Facility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_VariableRateCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate Credit Facility [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_VariableRateCommercialPaperProgramMember" xlink:type="locator" xlink:label="maa_VariableRateCommercialPaperProgramMember" />
    <link:label xml:lang="en-US" xlink:label="maa_VariableRateCommercialPaperProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable Rate Commercial Paper Program [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_VariableRateCommercialPaperProgramMember" xlink:to="maa_VariableRateCommercialPaperProgramMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_VariableRateCommercialPaperProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate Commercial Paper Program [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_VariableRateCommercialPaperProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate Commercial Paper Program [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_FixedRateDebtSeniorNotesMember" xlink:type="locator" xlink:label="maa_FixedRateDebtSeniorNotesMember" />
    <link:label xml:lang="en-US" xlink:label="maa_FixedRateDebtSeniorNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed Rate Debt Senior Notes [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_FixedRateDebtSeniorNotesMember" xlink:to="maa_FixedRateDebtSeniorNotesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_FixedRateDebtSeniorNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Rate Debt Senior Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_FixedRateDebtSeniorNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Rate Debt Senior Notes [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_FairMarketValueAdjustmentandDebtIssuanceCostMember" xlink:type="locator" xlink:label="maa_FairMarketValueAdjustmentandDebtIssuanceCostMember" />
    <link:label xml:lang="en-US" xlink:label="maa_FairMarketValueAdjustmentandDebtIssuanceCostMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair Market Value Adjustment and Debt Issuance Cost [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_FairMarketValueAdjustmentandDebtIssuanceCostMember" xlink:to="maa_FairMarketValueAdjustmentandDebtIssuanceCostMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_FairMarketValueAdjustmentandDebtIssuanceCostMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Market Value Adjustment and Debt Issuance Cost [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_FairMarketValueAdjustmentandDebtIssuanceCostMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Market Value Adjustmentand Debt Issuance Cost [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_FixedRateDebtSeniorNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fixed Rate Debt Senior Notes [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCredit" xlink:type="locator" xlink:label="us-gaap_LineOfCredit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Amount Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPaper" xlink:type="locator" xlink:label="us-gaap_CommercialPaper" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommercialPaper_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommercialPaper" xlink:to="us-gaap_CommercialPaper_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommercialPaper_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Commercial Paper</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFaceAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Face Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesPayable" xlink:type="locator" xlink:label="us-gaap_NotesPayable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NotesPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Outstanding Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayable" xlink:to="us-gaap_NotesPayable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NotesPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MortgageLoansOnRealEstate" xlink:type="locator" xlink:label="us-gaap_MortgageLoansOnRealEstate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MortgageLoansOnRealEstate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Face Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstate" xlink:to="us-gaap_MortgageLoansOnRealEstate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MortgageLoansOnRealEstate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans On Real Estate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Interest Rate, Effective Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Effective Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentMaturityDate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract Maturity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Date</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_DisclosureNotesPayableAdditionalInformationAbstract" xlink:type="locator" xlink:label="maa_DisclosureNotesPayableAdditionalInformationAbstract" />
    <link:label xml:lang="en-US" xlink:label="maa_DisclosureNotesPayableAdditionalInformationAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure - Notes Payable - Additional Information [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_DisclosureNotesPayableAdditionalInformationAbstract" xlink:to="maa_DisclosureNotesPayableAdditionalInformationAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_DisclosureNotesPayableAdditionalInformationAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disclosure Notes Payable Additional Information [Abstract]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_A1BillionUnsecuredRevolvingCreditFacilityMember" xlink:type="locator" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">$1 billion unsecured revolving credit facility [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_A1BillionUnsecuredRevolvingCreditFacilityMember" xlink:to="maa_A1BillionUnsecuredRevolvingCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">$1 Billion Unsecured Revolving Credit Faciltiy [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_A1BillionUnsecuredRevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">A1 Billion Unsecured Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_AverageAxis" xlink:type="locator" xlink:label="maa_AverageAxis" />
    <link:label xml:lang="en-US" xlink:label="maa_AverageAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Average [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_AverageAxis" xlink:to="maa_AverageAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_AverageAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_AverageAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Average [Axis]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_AverageDomain" xlink:type="locator" xlink:label="maa_AverageDomain" />
    <link:label xml:lang="en-US" xlink:label="maa_AverageDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">[Domain] for Average [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_AverageDomain" xlink:to="maa_AverageDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_AverageDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_AverageDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Average [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_YearstomaturityMember" xlink:type="locator" xlink:label="maa_YearstomaturityMember" />
    <link:label xml:lang="en-US" xlink:label="maa_YearstomaturityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">years to maturity [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_YearstomaturityMember" xlink:to="maa_YearstomaturityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_YearstomaturityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Years to Maturity [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_YearstomaturityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Yearstomaturity [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeNotesMember" xlink:type="locator" xlink:label="us-gaap_IncomeNotesMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public Income Notes [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeNotesMember" xlink:to="us-gaap_IncomeNotesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Notes [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrivatePlacementMember" xlink:type="locator" xlink:label="us-gaap_PrivatePlacementMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PrivatePlacementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Private Placement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrivatePlacementMember" xlink:to="us-gaap_PrivatePlacementMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PrivatePlacementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Private Placement [Member]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis" />
    <link:label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal Entity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_OnePointSevenZeroNotesDueTwoThousandAndThirtyOneMember" xlink:type="locator" xlink:label="maa_OnePointSevenZeroNotesDueTwoThousandAndThirtyOneMember" />
    <link:label xml:lang="en-US" xlink:label="maa_OnePointSevenZeroNotesDueTwoThousandAndThirtyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">1.700% Notes due 2031.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_OnePointSevenZeroNotesDueTwoThousandAndThirtyOneMember" xlink:to="maa_OnePointSevenZeroNotesDueTwoThousandAndThirtyOneMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_OnePointSevenZeroNotesDueTwoThousandAndThirtyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">1.700% Notes Due 2031 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_OnePointSevenZeroNotesDueTwoThousandAndThirtyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">One Point Seven Zero Notes Due Two Thousand And Thirty One [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_WellsFargoTermLoanMember" xlink:type="locator" xlink:label="maa_WellsFargoTermLoanMember" />
    <link:label xml:lang="en-US" xlink:label="maa_WellsFargoTermLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Wells Fargo Term Loan [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_WellsFargoTermLoanMember" xlink:to="maa_WellsFargoTermLoanMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_WellsFargoTermLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Wells Fargo Term Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_WellsFargoTermLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Wells Fargo Term Loan [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_MaturingJulyTwentyTwentyThreePropertyMortgageMember" xlink:type="locator" xlink:label="maa_MaturingJulyTwentyTwentyThreePropertyMortgageMember" />
    <link:label xml:lang="en-US" xlink:label="maa_MaturingJulyTwentyTwentyThreePropertyMortgageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Maturing July 2020 three property mortgage.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_MaturingJulyTwentyTwentyThreePropertyMortgageMember" xlink:to="maa_MaturingJulyTwentyTwentyThreePropertyMortgageMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_MaturingJulyTwentyTwentyThreePropertyMortgageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturing July 2020, Three Property Mortgage [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_MaturingJulyTwentyTwentyThreePropertyMortgageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maturing July Twenty Twenty Three Property Mortgage [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_MaturingJulyTwentyTwentyFourPropertyMortgageMember" xlink:type="locator" xlink:label="maa_MaturingJulyTwentyTwentyFourPropertyMortgageMember" />
    <link:label xml:lang="en-US" xlink:label="maa_MaturingJulyTwentyTwentyFourPropertyMortgageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Maturing July 2020 four property mortgage.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_MaturingJulyTwentyTwentyFourPropertyMortgageMember" xlink:to="maa_MaturingJulyTwentyTwentyFourPropertyMortgageMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_MaturingJulyTwentyTwentyFourPropertyMortgageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturing July 2020, Four Property Mortgage [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_MaturingJulyTwentyTwentyFourPropertyMortgageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maturing July Twenty Twenty Four Property Mortgage [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Current Borrowing Capacity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Current Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Basis Spread on Variable Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Basis Spread On Variable Rate1</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt Instrument, Maturity Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:type="locator" xlink:label="us-gaap_LettersOfCreditOutstandingAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letters of Credit Outstanding, Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LettersOfCreditOutstandingAmount" xlink:to="us-gaap_LettersOfCreditOutstandingAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Letters Of Credit Outstanding Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentPaymentTerms" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentPaymentTerms" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentPaymentTerms_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Payment Terms</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentPaymentTerms" xlink:to="us-gaap_DebtInstrumentPaymentTerms_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentPaymentTerms_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Payment Terms</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Unused Borrowing Capacity, Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:to="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Unused Borrowing Capacity Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTerm" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTerm" xlink:to="us-gaap_DebtInstrumentTerm_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Stated Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Redemption Price, Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:to="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Price Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:type="locator" xlink:label="us-gaap_DeferredFinanceCostsGross" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Issuance Costs, Gross</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFinanceCostsGross" xlink:to="us-gaap_DeferredFinanceCostsGross_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Finance Costs Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromDebtNetOfIssuanceCosts" xlink:type="locator" xlink:label="us-gaap_ProceedsFromDebtNetOfIssuanceCosts" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromDebtNetOfIssuanceCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from Debt, Net of Issuance Costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromDebtNetOfIssuanceCosts" xlink:to="us-gaap_ProceedsFromDebtNetOfIssuanceCosts_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromDebtNetOfIssuanceCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Debt Net Of Issuance Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfUnsecuredDebt" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayments of Unsecured Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfUnsecuredDebt" xlink:to="us-gaap_RepaymentsOfUnsecuredDebt_lbl" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_NumberOfApartmentCommunities" xlink:type="locator" xlink:label="maa_NumberOfApartmentCommunities" />
    <link:label xml:lang="en-US" xlink:label="maa_NumberOfApartmentCommunities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of apartment communities.</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfSecuredDebt" xlink:to="us-gaap_RepaymentsOfSecuredDebt_lbl" />
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    <link:label xml:lang="en-US" xlink:label="maa_NumberOfApartmentCommunities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of apartment communities</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NumberOfApartmentCommunities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Apartment Communities</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_NotesPayableExcludingInterestRateSwapsAndCapAgreements" xlink:type="locator" xlink:label="maa_NotesPayableExcludingInterestRateSwapsAndCapAgreements" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_DebtRenewalPeriod" xlink:type="locator" xlink:label="maa_DebtRenewalPeriod" />
    <link:label xml:lang="en-US" xlink:label="maa_DebtRenewalPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt Renewal Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_DebtRenewalPeriod" xlink:to="maa_DebtRenewalPeriod_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable" xlink:type="locator" xlink:label="us-gaap_DerivativeTable" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_DerivativeTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Table]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_FixedRateDebtMember" xlink:type="locator" xlink:label="maa_FixedRateDebtMember" />
    <link:label xml:lang="en-US" xlink:label="maa_FixedRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed Rate Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_FixedRateDebtMember" xlink:to="maa_FixedRateDebtMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_FixedRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Rate Debt [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_FixedRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Rate Debt [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_FloatingRateDebtMember" xlink:type="locator" xlink:label="maa_FloatingRateDebtMember" />
    <link:label xml:lang="en-US" xlink:label="maa_FloatingRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Floating Rate Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_FloatingRateDebtMember" xlink:to="maa_FloatingRateDebtMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_FloatingRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Floating Rate Debt [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_FloatingRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Floating Rate Debt [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_ConventionalVariableRateDebtMember" xlink:type="locator" xlink:label="maa_ConventionalVariableRateDebtMember" />
    <link:label xml:lang="en-US" xlink:label="maa_ConventionalVariableRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Conventional Variable Rate Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_ConventionalVariableRateDebtMember" xlink:to="maa_ConventionalVariableRateDebtMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_ConventionalVariableRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conventional Variable Rate Debt [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_ConventionalVariableRateDebtMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Conventional Variable Rate Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Frequency</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value By Measurement Frequency [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Frequency</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="us-gaap_FairValueMeasurementFrequencyDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Frequency [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsRecurringMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Measurements, Recurring [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsRecurringMember" xlink:to="us-gaap_FairValueMeasurementsRecurringMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements Recurring [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:type="locator" xlink:label="us-gaap_HedgingDesignationAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_HedgingDesignationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Designation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HedgingDesignationAxis" xlink:to="us-gaap_HedgingDesignationAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_HedgingDesignationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:type="locator" xlink:label="us-gaap_HedgingDesignationDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_HedgingDesignationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Designation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HedgingDesignationDomain" xlink:to="us-gaap_HedgingDesignationDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_HedgingDesignationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:type="locator" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Designated as Hedging Instrument</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DesignatedAsHedgingInstrumentMember" xlink:to="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Designated As Hedging Instrument [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentRiskAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instrument</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentRiskAxis" xlink:to="us-gaap_DerivativeInstrumentRiskAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument Risk [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:type="locator" xlink:label="us-gaap_DerivativeContractTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Contract</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeContractTypeDomain" xlink:to="us-gaap_DerivativeContractTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:type="locator" xlink:label="us-gaap_InterestRateSwapMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestRateSwapMember" xlink:to="us-gaap_InterestRateSwapMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpenseMember" xlink:type="locator" xlink:label="us-gaap_InterestExpenseMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestExpenseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseMember" xlink:to="us-gaap_InterestExpenseMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestExpenseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLineItems" xlink:type="locator" xlink:label="us-gaap_DerivativeLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Line Items]</link:label>
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    <link:label xml:lang="en-US" xlink:label="maa_NotesPayableExcludingInterestRateSwapsAndCapAgreements_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Excluding Interest Rate Swaps And Cap Agreements</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_NotesPayableFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Fair Value Disclosure</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_DebtRenewalPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Renewal Period</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_DebtRenewalPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Renewal Period</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockRedemptionPricePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Redemption Price Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockRedemptionDate" xlink:type="locator" xlink:label="us-gaap_PreferredStockRedemptionDate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockRedemptionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock, Redemption Date</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockLiquidationPreferenceValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Liquidation Preference Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_NumberOfSharesRemainingForIssuance" xlink:type="locator" xlink:label="maa_NumberOfSharesRemainingForIssuance" />
    <link:label xml:lang="en-US" xlink:label="maa_NumberOfSharesRemainingForIssuance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of shares remaining for issuance.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_NumberOfSharesRemainingForIssuance" xlink:to="maa_NumberOfSharesRemainingForIssuance_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:type="locator" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock shares sold</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Sale Of Stock Number Of Shares Issued In Transaction</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NumberOfSharesRemainingForIssuance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining common stock to be issued</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_NumberOfSharesRemainingForIssuance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Shares Remaining For Issuance</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_OperatingPartnershipUnitsOutstanding" xlink:type="locator" xlink:label="maa_OperatingPartnershipUnitsOutstanding" />
    <link:label xml:lang="en-US" xlink:label="maa_OperatingPartnershipUnitsOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating Partnership Units, Outstanding</link:label>
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    <link:loc xlink:href="maa-20200930.xsd#maa_ScheduleOfCapitalStructureLineItems" xlink:type="locator" xlink:label="maa_ScheduleOfCapitalStructureLineItems" />
    <link:label xml:lang="en-US" xlink:label="maa_ScheduleOfCapitalStructureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">[Line Items] for Schedule of Capital Structure [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_ScheduleOfCapitalStructureLineItems" xlink:to="maa_ScheduleOfCapitalStructureLineItems_lbl" />
    <link:loc xlink:href="maa-20200930.xsd#maa_ScheduleOfCapitalStructureTable" xlink:type="locator" xlink:label="maa_ScheduleOfCapitalStructureTable" />
    <link:label xml:lang="en-US" xlink:label="maa_ScheduleOfCapitalStructureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Capital Structure [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_ScheduleOfCapitalStructureTable" xlink:to="maa_ScheduleOfCapitalStructureTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_ScheduleOfCapitalStructureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Capital Structure [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_ScheduleOfCapitalStructureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Capital Structure [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_ScheduleOfCapitalStructureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Capital Structure [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_ScheduleOfCapitalStructureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Capital Structure [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_OperatingPartnershipUnitsOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating partnership units outstanding</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_OperatingPartnershipUnitsOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Partnership Units Outstanding</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_RedeemableCapitalSharesParOrStatedValuePerShare" xlink:type="locator" xlink:label="maa_RedeemableCapitalSharesParOrStatedValuePerShare" />
    <link:label xml:lang="en-US" xlink:label="maa_RedeemableCapitalSharesParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Redeemable Capital Shares, Par or Stated Value Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_RedeemableCapitalSharesParOrStatedValuePerShare" xlink:to="maa_RedeemableCapitalSharesParOrStatedValuePerShare_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_RedeemableCapitalSharesParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable Capital Shares Par Or Stated Value Per Share</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_RedeemableCapitalSharesParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Redeemable Capital Shares Par Or Stated Value Per Share</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_LeaseExpirationYear" xlink:type="locator" xlink:label="maa_LeaseExpirationYear" />
    <link:label xml:lang="en-US" xlink:label="maa_LeaseExpirationYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease expiration year.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_LeaseExpirationYear" xlink:to="maa_LeaseExpirationYear_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:type="locator" xlink:label="us-gaap_LossContingenciesTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LossContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss Contingencies [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingenciesTable" xlink:to="us-gaap_LossContingenciesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LossContingenciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingencies [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:type="locator" xlink:label="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate, Type of Property</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:to="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans On Real Estate Description Type Of Property [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:type="locator" xlink:label="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans On Real Estate Name Property Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ApartmentBuildingMember" xlink:type="locator" xlink:label="srt_ApartmentBuildingMember" />
    <link:label xml:lang="en-US" xlink:label="srt_ApartmentBuildingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Apartment Communities [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ApartmentBuildingMember" xlink:to="srt_ApartmentBuildingMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ApartmentBuildingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Apartment Building [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OfficeBuildingMember" xlink:type="locator" xlink:label="srt_OfficeBuildingMember" />
    <link:label xml:lang="en-US" xlink:label="srt_OfficeBuildingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Office Lease [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_OfficeBuildingMember" xlink:to="srt_OfficeBuildingMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_OfficeBuildingMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Office Building [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis" xlink:type="locator" xlink:label="srt_LitigationCaseAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_LitigationCaseAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation Case</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_LitigationCaseAxis" xlink:to="srt_LitigationCaseAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_LitigationCaseAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Case [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:type="locator" xlink:label="srt_LitigationCaseTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_LitigationCaseTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation Case</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="srt_LitigationCaseTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_LitigationCaseTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Case Type [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_ClevenLitigationCaseMember" xlink:type="locator" xlink:label="maa_ClevenLitigationCaseMember" />
    <link:label xml:lang="en-US" xlink:label="maa_ClevenLitigationCaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cleven Litigation Case [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_ClevenLitigationCaseMember" xlink:to="maa_ClevenLitigationCaseMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_ClevenLitigationCaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cleven Litigation Case [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_ClevenLitigationCaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cleven Litigation Case [Member]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_BrownLitigationCaseMember" xlink:type="locator" xlink:label="maa_BrownLitigationCaseMember" />
    <link:label xml:lang="en-US" xlink:label="maa_BrownLitigationCaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Brown Litigation Case [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_BrownLitigationCaseMember" xlink:to="maa_BrownLitigationCaseMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_BrownLitigationCaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Brown Litigation Case [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_BrownLitigationCaseMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Brown Litigation Case [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:type="locator" xlink:label="us-gaap_LossContingenciesLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss Contingencies [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_LossContingenciesLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_LeaseExpirationYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease expiration year</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_LeaseExpirationYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Expiration Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Leases, Future Minimum Payments Due, Next Twelve Months</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Leases, Future Minimum Payments, Due in Two Years</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Leases, Future Minimum Payments, Due in Three Years</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Leases, Future Minimum Payments, Due in Four Years</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due After Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Operating Leases, Future Minimum Payments Due</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net present value adjustments</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Undiscounted Excess Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:type="locator" xlink:label="us-gaap_LossContingencyEstimateOfPossibleLoss" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:to="us-gaap_LossContingencyEstimateOfPossibleLoss_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LossContingencyEstimateOfPossibleLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingency Estimate Of Possible Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyAccrualAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss Contingency Accrual</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencyAccrualAtCarryingValue" xlink:to="us-gaap_LossContingencyAccrualAtCarryingValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingency Accrual At Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Disclosure Of Entitys Reportable Segments [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract" xlink:to="us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_StatementBusinessSegmentsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Business Segments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_SameStoreMember" xlink:type="locator" xlink:label="maa_SameStoreMember" />
    <link:label xml:lang="en-US" xlink:label="maa_SameStoreMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Same Store [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_SameStoreMember" xlink:to="maa_SameStoreMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_SameStoreMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Same Store [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_SameStoreMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Same Store [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingInformationLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting Information [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_SegmentReportingInformationLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Information [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfRealEstateProperties_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of owned or owned interests of apartment communities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfReportableSegments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of reportable segments</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Reportable Segments</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_PeriodPropertiesOwnedAndStabilized" xlink:type="locator" xlink:label="maa_PeriodPropertiesOwnedAndStabilized" />
    <link:label xml:lang="en-US" xlink:label="maa_PeriodPropertiesOwnedAndStabilized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Period properties owned and stabilized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_PeriodPropertiesOwnedAndStabilized" xlink:to="maa_PeriodPropertiesOwnedAndStabilized_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_PeriodPropertiesOwnedAndStabilized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Period properties owned and stabilized</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_PeriodPropertiesOwnedAndStabilized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Period Properties Owned And Stabilized</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_OccupancyLevelForStabilizedCommunities" xlink:type="locator" xlink:label="maa_OccupancyLevelForStabilizedCommunities" />
    <link:label xml:lang="en-US" xlink:label="maa_OccupancyLevelForStabilizedCommunities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Occupancy level for stabilized communities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_OccupancyLevelForStabilizedCommunities" xlink:to="maa_OccupancyLevelForStabilizedCommunities_lbl" />
    <link:loc xlink:href="maa-20200930.xsd#maa_PeriodPropertiesStabilized" xlink:type="locator" xlink:label="maa_PeriodPropertiesStabilized" />
    <link:label xml:lang="en-US" xlink:label="maa_PeriodPropertiesStabilized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Period Properties Stabilized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_PeriodPropertiesStabilized" xlink:to="maa_PeriodPropertiesStabilized_lbl" />
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    <link:label xml:lang="en-US" xlink:label="maa_OccupancyLevelForStabilizedCommunities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Occupancy Level For Stabilized Communities</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_PeriodPropertiesStabilized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Period Properties Stabilized</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_PeriodPropertiesStabilized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Period Properties Stabilized</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_DisclosureRevenuesAndNoiForReportableSegmentAbstract" xlink:type="locator" xlink:label="maa_DisclosureRevenuesAndNoiForReportableSegmentAbstract" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" />
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    <link:loc xlink:href="maa-20200930.xsd#maa_NonSameStoreAndOtherMember" xlink:type="locator" xlink:label="maa_NonSameStoreAndOtherMember" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_NonSameStoreAndOtherMember" xlink:to="maa_NonSameStoreAndOtherMember_lbl" />
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    <link:label xml:lang="en-US" xlink:label="maa_NonSameStoreAndOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Non Same Store And Other [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Segment Information</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherOperatingIncome" xlink:type="locator" xlink:label="us-gaap_OtherOperatingIncome" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherOperatingIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Operating Income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherOperatingIncome" xlink:to="us-gaap_OtherOperatingIncome_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherOperatingIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Operating Income</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total operating revenues</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_OperatingIncomeBeforeDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Operating Income</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_OperatingIncomeBeforeDepreciation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Income Before Depreciation</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Depreciation and amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherCostAndExpenseOperating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other Cost and Expense, Operating</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">General and administrative expenses</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest expense</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) on sale of depreciable real estate assets</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_GainLossOnSaleOfNonDepreciableRealEstateAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on sale of non-depreciable real estate assets</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other non-operating income (expense)</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gain (loss) from real estate joint ventures</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net income attributable to noncontrolling interests</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_PreferredStockDividendsIncomeStatementImpact_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Preferred Stock Dividends, Income Statement Impact</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_DisclosureAssetsForReportableSegmentAbstract" xlink:type="locator" xlink:label="maa_DisclosureAssetsForReportableSegmentAbstract" />
    <link:label xml:lang="en-US" xlink:label="maa_DisclosureAssetsForReportableSegmentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure - Assets for Reportable Segment [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_DisclosureAssetsForReportableSegmentAbstract" xlink:to="maa_DisclosureAssetsForReportableSegmentAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_DisclosureAssetsForReportableSegmentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disclosure Assets For Reportable Segment [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reconciliation Of Assets From Segment To Consolidated [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:to="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Reconciliation Of Assets From Segment To Consolidated [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateMember" xlink:type="locator" xlink:label="us-gaap_CorporateMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CorporateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporate assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateMember" xlink:to="us-gaap_CorporateMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CorporateMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Corporate [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAssetReconcilingItemLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingAssetReconcilingItemLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting, Asset Reconciling Item [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:to="us-gaap_SegmentReportingAssetReconcilingItemLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingAssetReconcilingItemLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Asset Reconciling Item [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total assets</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_RealEstateAcquisitionDate" xlink:type="locator" xlink:label="maa_RealEstateAcquisitionDate" />
    <link:label xml:lang="en-US" xlink:label="maa_RealEstateAcquisitionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate acquisition date.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_RealEstateAcquisitionDate" xlink:to="maa_RealEstateAcquisitionDate_lbl" />
    <link:loc xlink:href="maa-20200930.xsd#maa_RealEstateDispositionDate" xlink:type="locator" xlink:label="maa_RealEstateDispositionDate" />
    <link:label xml:lang="en-US" xlink:label="maa_RealEstateDispositionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate, disposition date.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_RealEstateDispositionDate" xlink:to="maa_RealEstateDispositionDate_lbl" />
    <link:loc xlink:href="maa-20200930.xsd#maa_AcquisitionsandDisposalsLineItems" xlink:type="locator" xlink:label="maa_AcquisitionsandDisposalsLineItems" />
    <link:label xml:lang="en-US" xlink:label="maa_AcquisitionsandDisposalsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquisitions and Disposals [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_AcquisitionsandDisposalsLineItems" xlink:to="maa_AcquisitionsandDisposalsLineItems_lbl" />
    <link:loc xlink:href="maa-20200930.xsd#maa_AcquisitionsAndDisposalsTable" xlink:type="locator" xlink:label="maa_AcquisitionsAndDisposalsTable" />
    <link:label xml:lang="en-US" xlink:label="maa_AcquisitionsAndDisposalsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquisitions and disposals.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_AcquisitionsAndDisposalsTable" xlink:to="maa_AcquisitionsAndDisposalsTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_AcquisitionsAndDisposalsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisitions And Disposals [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_AcquisitionsAndDisposalsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Acquisitions And Disposals [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:type="locator" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Name of Property</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:to="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate And Accumulated Depreciation Description Of Property [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:type="locator" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Name of Property</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate And Accumulated Depreciation Name Of Property [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_ColonialPromenadeMember" xlink:type="locator" xlink:label="maa_ColonialPromenadeMember" />
    <link:label xml:lang="en-US" xlink:label="maa_ColonialPromenadeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Colonial promenade.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_ColonialPromenadeMember" xlink:to="maa_ColonialPromenadeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_ColonialPromenadeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Colonial Promenade [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_ColonialPromenadeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Colonial Promenade [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition, Acquiree</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Acquiree [Domain]</link:label>
    <link:loc xlink:href="maa-20200930.xsd#maa_GeorgetownMember" xlink:type="locator" xlink:label="maa_GeorgetownMember" />
    <link:label xml:lang="en-US" xlink:label="maa_GeorgetownMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Georgetown member.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="maa_GeorgetownMember" xlink:to="maa_GeorgetownMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="maa_GeorgetownMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Georgetown [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_GeorgetownMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Georgetown [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:type="locator" xlink:label="srt_StatementGeographicalAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Geographical [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:type="locator" xlink:label="srt_SegmentGeographicalDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Segment Geographical [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_TX" xlink:type="locator" xlink:label="stpr_TX" />
    <link:label xml:lang="en-US" xlink:label="stpr_TX_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Austin, TX [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_TX" xlink:to="stpr_TX_lbl" />
    <link:label xml:lang="en-US" xlink:label="stpr_TX_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">TEXAS</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment By Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LandMember" xlink:type="locator" xlink:label="us-gaap_LandMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LandMember" xlink:to="us-gaap_LandMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LandMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Land [Member]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_AL" xlink:type="locator" xlink:label="country_AL" />
    <link:label xml:lang="en-US" xlink:label="country_AL_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Huntsville, AL</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_AL" xlink:to="country_AL_lbl" />
    <link:label xml:lang="en-US" xlink:label="country_AL_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">ALBANIA</link:label>
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    <link:label xml:lang="en-US" xlink:label="maa_AcquisitionsandDisposalsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Acquisitionsand Disposals [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AreaOfLand" xlink:type="locator" xlink:label="us-gaap_AreaOfLand" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AreaOfLand_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Area of Land</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AreaOfLand" xlink:to="us-gaap_AreaOfLand_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AreaOfLand_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Area Of Land</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_RealEstateAcquisitionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisition Date</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_RealEstateAcquisitionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Acquisition Date</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_RealEstateDispositionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Date</link:label>
    <link:label xml:lang="en-US" xlink:label="maa_RealEstateDispositionDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Disposition Date</link:label>
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