-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IPoLraUI6lgio9GzgIsYvm0iEiL4l4HJsR+89qIhKtmFJOQABEomEuR5duVGMexT
 XPRpgJmesNpkg9jOiZBKmQ==

<SEC-DOCUMENT>0001352436-07-000003.txt : 20070514
<SEC-HEADER>0001352436-07-000003.hdr.sgml : 20070514
<ACCEPTANCE-DATETIME>20070514135607
ACCESSION NUMBER:		0001352436-07-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070511
FILED AS OF DATE:		20070514
DATE AS OF CHANGE:		20070514

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			APAC CUSTOMER SERVICE INC
		CENTRAL INDEX KEY:			0000949297
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				362777140
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			0103

	BUSINESS ADDRESS:	
		STREET 1:		SIX PARKWAY NORTH
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015
		BUSINESS PHONE:		847-236-5452

	MAIL ADDRESS:	
		STREET 1:		SIX PARKWAY NORTH
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	APAC TELESERVICES INC
		DATE OF NAME CHANGE:	19950915

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	APAC CORP
		DATE OF NAME CHANGE:	19950811

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DOOLAN JOSEPH
		CENTRAL INDEX KEY:			0001352436

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26786
		FILM NUMBER:		07845440

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		8473741962

	MAIL ADDRESS:	
		STREET 1:		C/O APAC CUSTOMER SERVICES, INC.
		STREET 2:		SIX PARKWAY NORTH
		CITY:			DEERFIELD
		STATE:			IL
		ZIP:			60015
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-05-11</periodOfReport>

    <issuer>
        <issuerCik>0000949297</issuerCik>
        <issuerName>APAC CUSTOMER SERVICE INC</issuerName>
        <issuerTradingSymbol>APAC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001352436</rptOwnerCik>
            <rptOwnerName>DOOLAN JOSEPH</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>APAC CUSTOMER SERVICES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>SIX PARKWAY NORTH</rptOwnerStreet2>
            <rptOwnerCity>DEERFIELD</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60015</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President and Controller</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-05-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.30</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-05-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.42</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joseph Doolan</signatureName>
        <signatureDate>2007-05-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----