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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,
 QwYhJYPMf4d4dybIY8PdghyNjPlhSmTX4CULsAey3GqE2MtE5ebdnveQBTuoEK7y
 oZI7C8rXfZUnEO255wPxtw==

<SEC-DOCUMENT>0001235030-03-000052.txt : 20031125
<SEC-HEADER>0001235030-03-000052.hdr.sgml : 20031125
<ACCEPTANCE-DATETIME>20031125114333
ACCESSION NUMBER:		0001235030-03-000052
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031124
FILED AS OF DATE:		20031125

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KANDELL DAVID A
		CENTRAL INDEX KEY:			0001235033

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13580
		FILM NUMBER:		031022368

	BUSINESS ADDRESS:	
		STREET 1:		C/O SUFFOLK BANCORP
		STREET 2:		WEST SECOND STREET
		CITY:			RIVERHEAD
		STATE:			NY
		ZIP:			11901
		BUSINESS PHONE:		6317275667

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SUFFOLK BANCORP
		CENTRAL INDEX KEY:			0000754673
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				112708279
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6 W SECOND ST
		CITY:			RIVERHEAD
		STATE:			NY
		ZIP:			11901
		BUSINESS PHONE:		5167275667

	MAIL ADDRESS:	
		STREET 1:		6 WEST SECOND STREET
		CITY:			RIVERHEAD
		STATE:			NY
		ZIP:			11901
</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>2003-11-24</periodOfReport>
    <issuer>
        <issuerCik>0000754673</issuerCik>
        <issuerName>SUFFOLK BANCORP</issuerName>
        <issuerTradingSymbol>SUBK</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001235033</rptOwnerCik>
            <rptOwnerName>KANDELL DAVID A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SUFFOLK BANCORP</rptOwnerStreet1>
            <rptOwnerStreet2>4 WEST SECOND STREET, PO BOX 9000</rptOwnerStreet2>
            <rptOwnerCity>RIVERHEAD</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11901</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeHolding><securityTitle><value>Suffolk Bancorp Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>425</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>Spouse (IRA)</value></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeTransaction><securityTitle><value>Suffolk Bancorp Common Stock</value></securityTitle><transactionDate><value>2003-11-24</value></transactionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>P</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>44.9817</value></transactionShares><transactionPricePer
Share><value>35.57</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1856.0325</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeHolding><securityTitle><value>Suffolk Bancorp Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>425</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>Son</value></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Suffolk Bancorp Common Stock</value></securityTitle><postTransactionAmounts><sharesOwn
edFollowingTransaction><value>531</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>Son</value></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><footnotes/><remarks/><ownerSignature><signatureName>Douglas Ian Shaw Power of Attorney for David A. Kandell</signatureName><signatureDate>2003-11-25</signatureDate></ownerSignature></ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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