-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 BGYJMSqHG2I9cH7HiRKJzR1i3YeUhapnu3oM+NqxT9uporOb8ZGoSGCDuVRHFemv
 kGK1brRsPZ7GKRVOLA2+kQ==

<SEC-DOCUMENT>0000723458-10-000053.txt : 20100811
<SEC-HEADER>0000723458-10-000053.hdr.sgml : 20100811
<ACCEPTANCE-DATETIME>20100811152542
ACCESSION NUMBER:		0000723458-10-000053
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100811
FILED AS OF DATE:		20100811
DATE AS OF CHANGE:		20100811

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schaubeck Patricia M
		CENTRAL INDEX KEY:			0001408145

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14783
		FILM NUMBER:		101007979

	MAIL ADDRESS:	
		STREET 1:		C/O STATE BANCORP, INC.
		STREET 2:		TWO JERICHO PLAZA
		CITY:			JERICHO
		STATE:			NY
		ZIP:			11753

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STATE BANCORP INC
		CENTRAL INDEX KEY:			0000723458
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				112846511
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2 JERICHO PLZ
		CITY:			JERICHO
		STATE:			NY
		ZIP:			11753
		BUSINESS PHONE:		516-465-2200

	MAIL ADDRESS:	
		STREET 1:		2 JERICHO PLZ
		CITY:			JERICHO
		STATE:			NY
		ZIP:			11753
</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>2010-08-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000723458</issuerCik>
        <issuerName>STATE BANCORP INC</issuerName>
        <issuerTradingSymbol>stbc</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001408145</rptOwnerCik>
            <rptOwnerName>Schaubeck Patricia M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STATE BANCORP, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>TWO JERICHO PLAZA</rptOwnerStreet2>
            <rptOwnerCity>JERICHO</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11753</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>General Counsel</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>State Bancorp, Inc. Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-08-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.8099</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25573</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>State Bancorp, Inc. Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4115.4668</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Through ESOP</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>State Bancorp, Inc. Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>316.8665</value>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Total includes 11,306 shares of restricted stock granted to Ms. Schaubeck's as part of her 2009 incentive compensation.  Shares are granted under the Company's 2006 Equity Compensation Plan and will vest over a five year period; one-third to vest on April 2, 2013, one-third to vest on April 2, 2014 and the remainder to vest on April 2, 2015. To date, zero shares have vested.</footnote>
        <footnote id="F2">Total includes 5,517 shares of restricted stock granted to Ms. Schaubeck as part of her 2008 incentive compensation package.  Shares vest over a five year period; one-third to vest on March 25, 2012, one-third to vest on March 25, 2013 and the remainder to vest on March 25, 2014.  To date, zero shares have vested.</footnote>
        <footnote id="F3">Total includes 4,000 shares of restricted stock granted to Ms. Schaubeck as part of her 2007 incentive compensation package.  Shares vest over a five year period; one-third to vest on March 25, 2011, one-third to vest on March 25, 2012 and the remainder to vest on March 25, 2013. To date, zero shares have vested.</footnote>
        <footnote id="F4">Shares credited to Ms. Schaubeck under the State Bancorp, Inc. Employee Stock Ownership Plan.</footnote>
        <footnote id="F5">Through Company 401 (K) Matching Program.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Patricia M. Schaubeck</signatureName>
        <signatureDate>2010-08-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----