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    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidExpense_1510E6D4330C8B0AF33F21D82B914B3E_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidExpense_1510E6D4330C8B0AF33F21D82B914B3E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_4ED86D88A0AFA23927E321D82B91245C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherNoncashIncomeExpense_599EFCFF6FE87489EC8121D82B919FC0_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherNoncashIncomeExpense_599EFCFF6FE87489EC8121D82B919FC0" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other, net</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_D02E9BCFF9E3D6897E82F7BB35D03B80" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_0AD931173473321CB9D5F7BB35D01867" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_4E3CF69673A9BDF7B58BF7BB35D141F5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments_C1260C0C516757449918F7BB35D1B0FC_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments_C1260C0C516757449918F7BB35D1B0FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less amount representing interest</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments_C1260C0C516757449918F7BB35D1B0FC" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_9D76AEEBFB12B3643A0BF7BB35D125B6_totalLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_9D76AEEBFB12B3643A0BF7BB35D125B6" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Present value of net minimum lease payments</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_9D76AEEBFB12B3643A0BF7BB35D125B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_9D76AEEBFB12B3643A0BF7BB35D125B6" xlink:to="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_9D76AEEBFB12B3643A0BF7BB35D125B6" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeasesOperatingAbstract_873831CAF029282DCB27F7BB35D1DF74_terseLabel_en-US" xlink:label="lab_us-gaap_LeasesOperatingAbstract_873831CAF029282DCB27F7BB35D1DF74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating leases</link:label>
    <link:label id="lab_us-gaap_LeasesOperatingAbstract_873831CAF029282DCB27F7BB35D1DF74_label_en-US" xlink:label="lab_us-gaap_LeasesOperatingAbstract_873831CAF029282DCB27F7BB35D1DF74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leases, Operating [Abstract]</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C64EE74F500BAE2D8C6DF7BB35D19A59_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C64EE74F500BAE2D8C6DF7BB35D19A59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_81B2F81BC5C078BF6627F7BB35D1E1F0_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_81B2F81BC5C078BF6627F7BB35D1E1F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_8F82493E5689D0484399F7BB35D1E90B_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_8F82493E5689D0484399F7BB35D1E90B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018</link:label>
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    <link:label id="lab_casy_AssetRetirementObligationInOtherAssetsNetOfAmortization_54351110A8D63B2D881B209E6AF125A1_terseLabel_en-US" xlink:label="lab_casy_AssetRetirementObligationInOtherAssetsNetOfAmortization_54351110A8D63B2D881B209E6AF125A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recorded asset retirement obligation (net of amortization)</link:label>
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    <link:label id="lab_us-gaap_CapitalLeaseObligationsMember_29ECCA5C0D8A5EA966C321D82B02AA67_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_29ECCA5C0D8A5EA966C321D82B02AA67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital Lease Obligations</link:label>
    <link:label id="lab_us-gaap_CapitalLeaseObligationsMember_29ECCA5C0D8A5EA966C321D82B02AA67_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_29ECCA5C0D8A5EA966C321D82B02AA67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Lease Obligations [Member]</link:label>
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    <link:label id="lab_casy_SeniorNotes572Member_B9D10CB0BFBA667404FE21D82B0390B6_terseLabel_en-US" xlink:label="lab_casy_SeniorNotes572Member_B9D10CB0BFBA667404FE21D82B0390B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.72% Senior Notes Due March 30, 2020</link:label>
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    <link:label id="lab_casy_SeniorNotes522Member_E12B4CBFBD055C4CC73E21D82B036C59_terseLabel_en-US" xlink:label="lab_casy_SeniorNotes522Member_E12B4CBFBD055C4CC73E21D82B036C59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.22% Senior Notes Due August 9, 2020</link:label>
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    <link:label id="lab_casy_SeniorNotesSeriesA367Member_07B5AB66EC8C4D66BE6921D82B036AC7_terseLabel_en-US" xlink:label="lab_casy_SeniorNotesSeriesA367Member_07B5AB66EC8C4D66BE6921D82B036AC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3.67% Senior Notes (Series A) Due Jun15, 2028</link:label>
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    <link:label id="lab_casy_SeniorNotesSeriesB375Member_C5FB2B14954F5E3EB5D221D82B03BEA8_terseLabel_en-US" xlink:label="lab_casy_SeniorNotesSeriesB375Member_C5FB2B14954F5E3EB5D221D82B03BEA8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3.75% Senior Notes (Series B) Due December 18, 2028</link:label>
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    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_8C72BC06415A8692D03621D82A996873_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_8C72BC06415A8692D03621D82A996873" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
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