-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 KULiDVqHQMnw4JIc/dBmLrYSsO86MRCyOzIyJh+xAFVKiL637J0Iqk44MV9koRq+
 gx6PMLUWyvv8RLOAzLmLjw==

<SEC-DOCUMENT>0001372041-11-000005.txt : 20110224
<SEC-HEADER>0001372041-11-000005.hdr.sgml : 20110224
<ACCEPTANCE-DATETIME>20110224185504
ACCESSION NUMBER:		0001372041-11-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110222
FILED AS OF DATE:		20110224
DATE AS OF CHANGE:		20110224

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PAETEC Holding Corp.
		CENTRAL INDEX KEY:			0001372041
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(585) 340-2500

	MAIL ADDRESS:	
		STREET 1:		600 WILLOWBROOK OFFICE PARK
		CITY:			FAIRPORT
		STATE:			NY
		ZIP:			14450

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WC Acquisition Holdings Corp.
		DATE OF NAME CHANGE:	20060808

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Moore Robert D Jr
		CENTRAL INDEX KEY:			0001391255

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-52486
		FILM NUMBER:		11638064

	MAIL ADDRESS:	
		STREET 1:		C/O PAETEC HOLDING CORP ONE PAETEC PLAZA
		STREET 2:		600 WILLOWBROOK OFFICE PARK, SUITE 300
		CITY:			FAIRPORT
		STATE:			NY
		ZIP:			14450
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-02-22</periodOfReport>

    <issuer>
        <issuerCik>0001372041</issuerCik>
        <issuerName>PAETEC Holding Corp.</issuerName>
        <issuerTradingSymbol>PAET</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001391255</rptOwnerCik>
            <rptOwnerName>Moore Robert D Jr</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE PAETEC PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2>600 WILLOWBROOK OFFICE PARK</rptOwnerStreet2>
            <rptOwnerCity>FAIRPORT</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>14450</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP and CIO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-02-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7712</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.87</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>297134</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ S. Shane Turley, Attorney-in-Fact</signatureName>
        <signatureDate>2011-02-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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