<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-11-24</periodOfReport>

    <issuer>
        <issuerCik>0000889936</issuerCik>
        <issuerName>PRIVATEBANCORP, INC</issuerName>
        <issuerTradingSymbol>PVTB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001184830</rptOwnerCik>
            <rptOwnerName>COLEMAN ROBERT F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>914 ASHLAND AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>RIVER FOREST</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60305</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-11-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.8868</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>64116</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2530</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Held By Spouse</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the weighted average sale price for multiple transactions reported on this line. The shares were sold at prices that ranged from $28.80 to $29.09. Upon request of the SEC staff, the issue, or a security holder of the issuer, the reporting person will provide information regarding the number of shares purchased at each separate price.</footnote>
        <footnote id="F2">Includes shares in the Robert F. Coleman &amp; Associates Retirement Plan and Trust for which the reporting person serves as trustee.  The reporting person disclaimes beneficial ownership of 4,860 shares held in the Retirement Plan and Trust in which the reporting person has no pecuniary interest.</footnote>
        <footnote id="F3">Indirect ownership consists of shares held by the reporting person's spouse in the Robert F. Coleman &amp;  Associates Retirement Plan and Trust for which reporting person serves as trustee.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Ramona Mateiu, Attorney-in-Fact</signatureName>
        <signatureDate>2008-11-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
