-----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,
 HlMCMkOhSC3kYtXOg81kNBS1GDCFtQv9FBavDJd03txhQeiqWX6ZFVAxq28OVUkb
 pyBTLkQruTQzw1VySZClQg==

<SEC-DOCUMENT>0001230295-08-000230.txt : 20080319
<SEC-HEADER>0001230295-08-000230.hdr.sgml : 20080319
<ACCEPTANCE-DATETIME>20080319185230
ACCESSION NUMBER:		0001230295-08-000230
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080317
FILED AS OF DATE:		20080319
DATE AS OF CHANGE:		20080319

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WILLISON BRUCE G
		CENTRAL INDEX KEY:			0001213942

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08972
		FILM NUMBER:		08700410

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		8186766000

	MAIL ADDRESS:	
		STREET 1:		21650 OXNARD STREET, 22ND FLOOR
		CITY:			WOODLAND HILLS
		STATE:			CA
		ZIP:			91367

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INDYMAC BANCORP INC
		CENTRAL INDEX KEY:			0000773468
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
		IRS NUMBER:				953983415
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		888 EAST WALNUT STREET
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101-7211
		BUSINESS PHONE:		8006692300

	MAIL ADDRESS:	
		STREET 1:		888 EAST WALNUT STREET
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101-7211

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INDYMAC MORTGAGE HOLDINGS INC
		DATE OF NAME CHANGE:	19980602

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INMC MORTGAGE HOLDINGS INC
		DATE OF NAME CHANGE:	19970813

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CWM MORTGAGE HOLDINGS INC
		DATE OF NAME CHANGE:	19941025
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wil582.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-03-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000773468</issuerCik>
        <issuerName>INDYMAC BANCORP INC</issuerName>
        <issuerTradingSymbol>IMB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001213942</rptOwnerCik>
            <rptOwnerName>WILLISON BRUCE G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 E WALNUT STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PASADENA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>91101</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.9250</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-03-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2015-03-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>25000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The option becomes exercisable for one-third of the shares on March 17, 2009, March 17, 2010 and March 17, 2011.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: James Barbour as Attorney-In-Fact</signatureName>
        <signatureDate>2008-03-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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