-----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,
 ULpkWKfiw7+Up1LauK72bbidgamD7E5zMqNWDV/H/S+pEuuhwnk2eTgB7/mpnVkC
 lKysiFbWALxE6b3SWRfRNQ==

<SEC-DOCUMENT>0001501180-10-000015.txt : 20101126
<SEC-HEADER>0001501180-10-000015.hdr.sgml : 20101125
<ACCEPTANCE-DATETIME>20101126132924
ACCESSION NUMBER:		0001501180-10-000015
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101124
FILED AS OF DATE:		20101126
DATE AS OF CHANGE:		20101126

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hicks G Richard
		CENTRAL INDEX KEY:			0001457513

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15835
		FILM NUMBER:		101216696

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		281-504-8027

	MAIL ADDRESS:	
		STREET 1:		1 SUGAR CREEK CENTER BLVD SUITE 500
		CITY:			SUGAR LAND
		STATE:			TX
		ZIP:			77478

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			US DATAWORKS INC
		CENTRAL INDEX KEY:			0001049505
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				841290152
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		5301 HOLLISTER ROAD
		STREET 2:		SUITE 250
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
		BUSINESS PHONE:		713-934-3856

	MAIL ADDRESS:	
		STREET 1:		5301 HOLLISTER ROAD
		STREET 2:		SUITE 250
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SONICPORT INC
		DATE OF NAME CHANGE:	20010430

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NEW WORLD PUBLISHING INC /CO/
		DATE OF NAME CHANGE:	19971112
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-11-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001049505</issuerCik>
        <issuerName>US DATAWORKS INC</issuerName>
        <issuerTradingSymbol>UDWK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001457513</rptOwnerCik>
            <rptOwnerName>Hicks G Richard</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1 SUGAR CREEK CENTER BLVD SUITE 500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SUGAR LAND</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77478</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-11-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>15500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.1851</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2044182</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Travis L Shirley Attorney-in-fact G Richard Hicks</signatureName>
        <signatureDate>2010-11-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----