-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 C9iRVrl0orBSnE3aC5yeAtzqP/fOBwnEhh7GDdcbmEoQKwtjgS7FQkKirueeW386
 cdNHD7WCkPB+i6yi6TjaZw==

<SEC-DOCUMENT>0000091928-05-000048.txt : 20050818
<SEC-HEADER>0000091928-05-000048.hdr.sgml : 20050818
<ACCEPTANCE-DATETIME>20050818124520
ACCESSION NUMBER:		0000091928-05-000048
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050818
FILED AS OF DATE:		20050818
DATE AS OF CHANGE:		20050818

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOUTH JERSEY INDUSTRIES INC
		CENTRAL INDEX KEY:			0000091928
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS DISTRIBUTION [4924]
		IRS NUMBER:				221901645
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1 SOUTH JERSEY PLAZA
		STREET 2:		ROUTE 54
		CITY:			FOLSOM
		STATE:			NJ
		ZIP:			08037
		BUSINESS PHONE:		609-561-9000

	MAIL ADDRESS:	
		STREET 1:		1 SOUTH JERSEY PLAZA
		STREET 2:		ROUTE 54
		CITY:			FOLSOM
		STATE:			NJ
		ZIP:			08037

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOUTH JERSEY GAS CO
		DATE OF NAME CHANGE:	19700507

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ATLANTIC CITY GAS CO
		DATE OF NAME CHANGE:	19680301

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			RARING FREDERICK R
		CENTRAL INDEX KEY:			0001201151

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06364
		FILM NUMBER:		051035286

	BUSINESS ADDRESS:	
		STREET 1:		PRESIDENT SEASHORE SUPPLY CO
		STREET 2:		13TH & HAVEN AVES
		CITY:			OCEAN CITY
		STATE:			NJ
		ZIP:			08226
		BUSINESS PHONE:		6093983303
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>f4forfrr.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-08-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000091928</issuerCik>
        <issuerName>SOUTH JERSEY INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>SJI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001201151</rptOwnerCik>
            <rptOwnerName>RARING FREDERICK R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>501 BURNING TREE BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ABSECON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>So.Jersey Ind., Inc. Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-08-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1500.</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.11</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27163.</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>So.Jersey Ind., Inc. Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2000.</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Seashore Supply Company</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <ownerSignature>
        <signatureName>Frederick R. Raring</signatureName>
        <signatureDate>2005-08-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----