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<!-- DFS ActiveDisclosure(SM) XBRL Schema Document - http://www.dfsco.com/financial-services/ -->
<!-- Creation Date      : 2018-05-08T22:32:19.1735226+00:00 -->
<!-- Version            : 2.9.6605.1333 -->
<!-- Package ID         : 099e3535becd49cf8433f24c2a106359 -->
<!-- Copyright (c) 2018 Donnelley Financial, LLC. All Rights Reserved. -->
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  <element id="pkg_LongTermDebtExcludingCurrentPortionMember" name="LongTermDebtExcludingCurrentPortionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_FixedRateSeniorNotesMember" name="FixedRateSeniorNotesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_PerformanceUnitsMember" name="PerformanceUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_RepurchasesOfCommonStockUnderStockRepurchaseProgram" name="RepurchasesOfCommonStockUnderStockRepurchaseProgram" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <element id="pkg_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax" name="CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <element id="pkg_OfficeDepotMember" name="OfficeDepotMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_FiberMember" name="FiberMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_WoodProductsIncludingChipsAndLogsMember" name="WoodProductsIncludingChipsAndLogsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_PackagingAndCorporateAndOtherMember" name="PackagingAndCorporateAndOtherMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_TimBarCorporationMember" name="TimBarCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_HexacombEuropeAndMexicoMember" name="HexacombEuropeAndMexicoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_BusinessCombinationAcquisitionAndIntegrationRelatedCosts" name="BusinessCombinationAcquisitionAndIntegrationRelatedCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <element id="pkg_ScheduleOfCommitmentsAndContingenciesLineItems" name="ScheduleOfCommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_ScheduleOfCommitmentsAndContingenciesTable" name="ScheduleOfCommitmentsAndContingenciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <element id="pkg_DeRidderLouisianaMember" name="DeRidderLouisianaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</schema>
