-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 VMdCm+X4kSzlzcMTOM0qkA==

<SEC-DOCUMENT>0000940526-05-000001.txt : 20051206
<SEC-HEADER>0000940526-05-000001.hdr.sgml : 20051206
<ACCEPTANCE-DATETIME>20051206180224
ACCESSION NUMBER:		0000940526-05-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20051205
FILED AS OF DATE:		20051206
DATE AS OF CHANGE:		20051206

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INFOCROSSING INC
		CENTRAL INDEX KEY:			0000893816
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
		IRS NUMBER:				133252333
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2 CHRISTIE HEIGHTS STREET
		CITY:			LEONIA
		STATE:			NJ
		ZIP:			07605
		BUSINESS PHONE:		2018404700

	MAIL ADDRESS:	
		STREET 1:		2 CHRISTIE HEIGHTS STREET
		CITY:			LEONIA
		STATE:			NJ
		ZIP:			07605

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMPUTER OUTSOURCING SERVICES INC
		DATE OF NAME CHANGE:	19930328

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LONSTEIN ZACH
		CENTRAL INDEX KEY:			0000940526

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20824
		FILM NUMBER:		051248000

	BUSINESS ADDRESS:	
		STREET 1:		360 WEST 31ST STREET
		STREET 2:		C/O COMPUTER OUTSOURCING SERVICES INC
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10001
		BUSINESS PHONE:		2018404710

	MAIL ADDRESS:	
		STREET 1:		C/O INFOCROSSING, INC
		STREET 2:		2 CHRISTIE HEIGHTS ST
		CITY:			LEONIA
		STATE:			NJ
		ZIP:			07605
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-12-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000893816</issuerCik>
        <issuerName>INFOCROSSING INC</issuerName>
        <issuerTradingSymbol>IFOX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000940526</rptOwnerCik>
            <rptOwnerName>LONSTEIN ZACH</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O INFOCROSSING, INC</rptOwnerStreet1>
            <rptOwnerStreet2>2 CHRISTIE HEIGHTS ST</rptOwnerStreet2>
            <rptOwnerCity>LEONIA</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07605</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Infocrossing Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-12-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.577</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2721842</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Infocrossing Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-12-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3900</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.467</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2725742</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>ZACH LONSTEIN</signatureName>
        <signatureDate>2005-12-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----