<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-07-28</periodOfReport>
    <issuer>
        <issuerCik>0000353191</issuerCik>
        <issuerName>NORTH VALLEY BANCORP</issuerName>
        <issuerTradingSymbol>NOVB</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001173575</rptOwnerCik>
            <rptOwnerName>LUDDEN THOMAS J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TRI-L RANCH</rptOwnerStreet1>
            <rptOwnerStreet2>BOX 900</rptOwnerStreet2>
            <rptOwnerCity>LEWISTON</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>96001</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common</value></securityTitle><transactionDate><value>2003-07-24</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>900</value><footnoteId id="F1"/></transactionShares><transactionPricePerShare><value>15.51</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>41500</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">REPRESENTS IMPLEMENTATION OF SECTION 8 OF THE 1998 EMPLOYEE STOCK INCENTIVE PLAN WHEREBY EACH DIRECTOR IS GRANTED A STOCK AWARD OF 900 SHARES ANNUALLY AS A RETAINER.</footnote></footnotes><remarks/><ownerSignature><signatureName>THOMAS J. LUDDEN</signatureName><signatureDate>2003-07-28</signatureDate></ownerSignature></ownershipDocument>

