<SEC-DOCUMENT>0001197315-20-000004.txt : 20200228
<SEC-HEADER>0001197315-20-000004.hdr.sgml : 20200228
<ACCEPTANCE-DATETIME>20200228172311
ACCESSION NUMBER:		0001197315-20-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20131111
FILED AS OF DATE:		20200228
DATE AS OF CHANGE:		20200228

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HENEGHAN THOMAS
		CENTRAL INDEX KEY:			0001197315

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11718
		FILM NUMBER:		20672450

	MAIL ADDRESS:	
		STREET 1:		C/O MANUFACTURED HOME COMMUNITIES INC
		STREET 2:		2 N RIVER PLAZA #800
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EQUITY LIFESTYLE PROPERTIES INC
		CENTRAL INDEX KEY:			0000895417
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				363857664
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		TWO N RIVERSIDE PLZ
		STREET 2:		STE 800
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3122791400

	MAIL ADDRESS:	
		STREET 1:		TWO N RIVERSIDE PLAZE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MANUFACTURED HOME COMMUNITIES INC
		DATE OF NAME CHANGE:	19940218
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_158292857457989.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-11-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000895417</issuerCik>
        <issuerName>EQUITY LIFESTYLE PROPERTIES INC</issuerName>
        <issuerTradingSymbol>ELS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001197315</rptOwnerCik>
            <rptOwnerName>HENEGHAN THOMAS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O EQUITY LIFESTYLE PROPERTIES, INC</rptOwnerStreet1>
            <rptOwnerStreet2>TWO NORTH RIVERSIDE PLAZA, SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice Chairman of the Board</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>103695</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>288975</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This filing adjusts the number of shares owned directly by Thomas P. Heneghan and the number of shares owned by the Deneen L. Heneghan Revocable Trust, respectively. Thomas P. Heneghan and Deneen L. Heneghan (Mr. Heneghan's spouse) are the co-trustees of such trust, and Deneen L. Heneghan is the beneficiary of such trust. There has been no change in the aggregate number of shares previously reported.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jennifer Krebs by Power of Attorney for Thomas Heneghan</signatureName>
        <signatureDate>2020-02-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
