-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000752642-04-000006.txt : 20040126
<SEC-HEADER>0000752642-04-000006.hdr.sgml : 20040126
<ACCEPTANCE-DATETIME>20040126161813
ACCESSION NUMBER:		0000752642-04-000006
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040126
FILED AS OF DATE:		20040126

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MONMOUTH REAL ESTATE INVESTMENT CORP
		CENTRAL INDEX KEY:			0000067625
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				221897375
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		3499 ROUTE 9 N, SUITE 3-C
		STREET 2:		JUNIPER BUSINESS PLAZA
		CITY:			FREEHOLD
		STATE:			NJ
		ZIP:			07728
		BUSINESS PHONE:		7325779996

	MAIL ADDRESS:	
		STREET 1:		3499 ROUTE 9 N, SUITE 3-C
		STREET 2:		JUNIPER BUSINESS PLAZA
		CITY:			FREEHOLD
		STATE:			NJ
		ZIP:			07728

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MONMOUTH REAL ESTATE INVESTMENT TRUST
		DATE OF NAME CHANGE:	19900403

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			UNITED MOBILE HOMES INC
		CENTRAL INDEX KEY:			0000752642
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-04258
		FILM NUMBER:		04543617

	BUSINESS ADDRESS:	
		STREET 1:		3499 ROUTE 9 N, SUITE 3-C
		STREET 2:		JUNIPER BUSINESS PLAZA
		CITY:			FREEHOLD
		STATE:			NJ
		ZIP:			07728
		BUSINESS PHONE:		7325779997

	MAIL ADDRESS:	
		STREET 1:		3499 ROUTE 9 N, SUITE 3-C
		STREET 2:		JUNIPER BUSINESS PLAZA
		CITY:			FREEHOLD
		STATE:			NJ
		ZIP:			07728
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-01-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000067625</issuerCik>
        <issuerName>MONMOUTH REAL ESTATE INVESTMENT CORP</issuerName>
        <issuerTradingSymbol>mnrta</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000752642</rptOwnerCik>
            <rptOwnerName>UNITED MOBILE HOMES INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3499 ROUTE 9 N, SUITE 3-C</rptOwnerStreet1>
            <rptOwnerStreet2>JUNIPER BUSINESS PLAZA</rptOwnerStreet2>
            <rptOwnerCity>FREEHOLD</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07728</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Affiliate</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            </securityTitle>
            <transactionDate>
                <value>2004-01-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
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            </transactionCoding>
            <transactionTimeliness>
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            <transactionAmounts>
                <transactionShares>
                    <value>31674</value>
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                <transactionPricePerShare>
                    <value>8.65</value>
                </transactionPricePerShare>
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                <transactionFormType>4</transactionFormType>
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            <transactionTimeliness>
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                    <value>8.76</value>
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        <nonDerivativeTransaction>
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                <transactionPricePerShare>
                    <value>8.77</value>
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                <transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
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                    <value>D</value>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Monmouth Real Estate Investment Corporation</value>
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            <transactionDate>
                <value>2004-01-26</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
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            <transactionTimeliness>
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            <transactionAmounts>
                <transactionShares>
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                <transactionPricePerShare>
                    <value>8.78</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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            <securityTitle>
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            <transactionCoding>
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            <transactionTimeliness>
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    <ownerSignature>
        <signatureName>Rosemarie Faccone</signatureName>
        <signatureDate>2004-01-26</signatureDate>
    </ownerSignature>
</ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----