-----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,
 T/sg0D4c4B2etAKqcqeiGR1ZrLDCkwUVHdUaaiQch7G6dIgSiym5NwnpYm09hGBb
 EGhdbw6vfxM7xizTL5ldhw==

<SEC-DOCUMENT>0000813461-03-000025.txt : 20031024
<SEC-HEADER>0000813461-03-000025.hdr.sgml : 20031024
<ACCEPTANCE-DATETIME>20031024165047
ACCESSION NUMBER:		0000813461-03-000025
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031024
FILED AS OF DATE:		20031024

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WESTCORP /CA/
		CENTRAL INDEX KEY:			0000813461
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
		IRS NUMBER:				510308535
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		23 PASTEUR RD
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618-3804
		BUSINESS PHONE:		9497271000

	MAIL ADDRESS:	
		STREET 1:		23 PASTEUR RD
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92718-3804

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WESTCORP INC
		DATE OF NAME CHANGE:	19900917

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OLSON MARK
		CENTRAL INDEX KEY:			0001179887

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09910
		FILM NUMBER:		03956879

	BUSINESS ADDRESS:	
		STREET 1:		23 PASTEUR ROAD
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618
		BUSINESS PHONE:		9497271041

	MAIL ADDRESS:	
		STREET 1:		23 PASTEUR ROAD
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-10-24</periodOfReport>
    <issuer>
        <issuerCik>0000813461</issuerCik>
        <issuerName>WESTCORP /CA/</issuerName>
        <issuerTradingSymbol>wes</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001179887</rptOwnerCik>
            <rptOwnerName>OLSON MARK</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>23 PASTEUR ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>IRVINE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92618</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
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tiveTransaction><derivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><conversionOrExercisePrice><value>18.30</value></conversionOrExercisePrice><transactionDate><value>2003-10-24</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>100</value></transactionShares><transactionPricePerShare><value>35.13</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-02-15</value></exerciseDate><expirationDate><value>2009-02-15</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>100</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>7400</valu
e></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><conversionOrExercisePrice><value>18.30</value></conversionOrExercisePrice><transactionDate><value>2003-10-24</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>256</value></transactionShares><transactionPricePerShare><value>35.25</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-02-15</value></exerciseDate><expirationDate><value>2009-02-15</value></expirationDate><underlyingSecurity><underlyingSecurityTit
le><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>256</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>7144</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><conversionOrExercisePrice><value>18.30</value></conversionOrExercisePrice><transactionDate><value>2003-10-24</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>1519</value></transactionShares><transactionPricePerShare><value>35.00</value></transactionPricePerShare><transactionAcquiredDisposedCode><v
alue>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-02-15</value></exerciseDate><expirationDate><value>2009-02-15</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1519</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>5625</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Vesting schedule: 3/16/99  966 - 7/30/99  482 -  7/30/00  483</footnote><footnote id="F2">Vesting schedule:  12/09/99  625 - 12/09/00  625 - 12/09/01  625 - 12/09/02  625</footnote><footnote id="F3">Vesting schedule:  4/27/00  750 - 4/27/01  750 - 4/27/02  750 -  4/27/03  750</footnote><foot
note id="F4">Vesting schedule: 2/22/01  1,250 -  2/22/02  1,250 -  2/22/2003  1,250</footnote><footnote id="F5">Vesting schedule:  2/22/02  1,500 -  2/22/2003  1,500</footnote></footnotes><remarks/><ownerSignature><signatureName>Mark Olson by Guy Du Bose POA</signatureName><signatureDate>2003-10-24</signatureDate></ownerSignature></ownershipDocument>

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</SEC-DOCUMENT>
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