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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 WTk83p+8XyaBmVyE1RYcDqw8E1T2EqAnnMJ4A2YArQJ/Rm2egn2+JxYLcf5mhe57
 c3o1AEEXRGRlU5UY2dHApw==

<SEC-DOCUMENT>0001209191-07-024246.txt : 20070418
<SEC-HEADER>0001209191-07-024246.hdr.sgml : 20070418
<ACCEPTANCE-DATETIME>20070418105153
ACCESSION NUMBER:		0001209191-07-024246
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070417
FILED AS OF DATE:		20070418
DATE AS OF CHANGE:		20070418

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BUFFERD ALLAN S
		CENTRAL INDEX KEY:			0001235354

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15137
		FILM NUMBER:		07772582

	BUSINESS ADDRESS:	
		STREET 1:		8 WHITNEY ROAD
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02160
		BUSINESS PHONE:		781 942 8120

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASSBANK CORP
		CENTRAL INDEX KEY:			0000799166
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				042930382
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		123 HAVEN STREET
		CITY:			READING
		STATE:			MA
		ZIP:			01867
		BUSINESS PHONE:		6179428192

	MAIL ADDRESS:	
		STREET 1:		123 HAVEN STREET
		CITY:			READING
		STATE:			PA
		ZIP:			01867
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-04-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000799166</issuerCik>
        <issuerName>MASSBANK CORP</issuerName>
        <issuerTradingSymbol>MASB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001235354</rptOwnerCik>
            <rptOwnerName>BUFFERD ALLAN S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MASSBANK CORP</rptOwnerStreet1>
            <rptOwnerStreet2>123 HAVEN STREET</rptOwnerStreet2>
            <rptOwnerCity>READING</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01867</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>32.92</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-04-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>15.1883</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32.92</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>15.1883</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2949.2713</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Cash-only security issued pursuant to the Directors' Deferred Compensation Plan</footnote>
        <footnote id="F2">The shares of phantom stock become payable in shares of common stock of the Issuer upon the reporting person attaining the age of 72, or his termination or death or upon a change of control of the Issuer</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Allan S. Bufferd</signatureName>
        <signatureDate>2007-04-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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