-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001096385-08-000046.txt : 20080501
<SEC-HEADER>0001096385-08-000046.hdr.sgml : 20080501
<ACCEPTANCE-DATETIME>20080501172611
ACCESSION NUMBER:		0001096385-08-000046
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080501
FILED AS OF DATE:		20080501
DATE AS OF CHANGE:		20080501

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VECTREN CORP
		CENTRAL INDEX KEY:			0001096385
		STANDARD INDUSTRIAL CLASSIFICATION:	GAS & OTHER SERVICES COMBINED [4932]
		IRS NUMBER:				352086905
		STATE OF INCORPORATION:			IN
		FISCAL YEAR END:			0227

	BUSINESS ADDRESS:	
		STREET 1:		ONE VECTREN SQUARE
		CITY:			EVANSVILLE
		STATE:			IN
		ZIP:			47708
		BUSINESS PHONE:		8124914000

	MAIL ADDRESS:	
		STREET 1:		ONE VECTREN SQUARE
		CITY:			EVANSVILLE
		STATE:			IN
		ZIP:			47708

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DUNN JOHN M
		CENTRAL INDEX KEY:			0001180878

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15467
		FILM NUMBER:		08795773

	MAIL ADDRESS:	
		STREET 1:		C/O VECTREN CORP
		STREET 2:		20 NW FOURTH STREET
		CITY:			EVANVILLE
		STATE:			IN
		ZIP:			47711
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-01</periodOfReport>

    <issuer>
        <issuerCik>0001096385</issuerCik>
        <issuerName>VECTREN CORP</issuerName>
        <issuerTradingSymbol>VVC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001180878</rptOwnerCik>
            <rptOwnerName>DUNN JOHN M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE VECTREN SQUARE</rptOwnerStreet1>
            <rptOwnerStreet2>P. O. BOX 209</rptOwnerStreet2>
            <rptOwnerCity>EVANSVILLE</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>47708</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-05-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>178.8909</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>178.8909</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22124.7541</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F2">Phantom stock units held under the non-qualified deferred compensation plan will effectively be exercised at the time amounts represented by those units are paid out under the Plan.  Generally, unless provided otherwise by the participant, the payout begins with the end of the board member's service as a member of the board.  Pursuant to the non-qualified deferred compensation plan, payouts can occur for up to 15 years.  Amounts held in the phantom stock accounts would be amortized over that period unless directed otherwise by the participant.</footnote>
        <footnote id="F1">Phantom shares acquired through Vectren Corporation (Vectren) Non-Qualified Deferred Compensation Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Ronald E. Christian</signatureName>
        <signatureDate>2008-05-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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