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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 AzLhe33BcjdLXCbZBS2+slRTW0x0w99drYxZgHH4Is+E6YAyi3/zAhI9eVGPHmr6
 UqoniKYcRmFmDLea1g5kJQ==

<SEC-DOCUMENT>0001181830-03-000020.txt : 20030603
<SEC-HEADER>0001181830-03-000020.hdr.sgml : 20030603
<ACCEPTANCE-DATETIME>20030603085003
ACCESSION NUMBER:		0001181830-03-000020
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030530
FILED AS OF DATE:		20030603

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REYNOLDS D C
		CENTRAL INDEX KEY:			0001181830

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07810
		FILM NUMBER:		03729095

	MAIL ADDRESS:	
		STREET 1:		605 RICHARD ARRINGTON JR BLVD N
		CITY:			BIRMINGHAM
		STATE:			AL
		ZIP:			35202-2707

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ENERGEN CORP
		CENTRAL INDEX KEY:			0000277595
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS DISTRIBUTION [4924]
		IRS NUMBER:				630757759
		STATE OF INCORPORATION:			AL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		605 RICHARD ARRINGTON JR BLVD N
		CITY:			BIRMINGHAM
		STATE:			AL
		ZIP:			35203-2707
		BUSINESS PHONE:		2053262997

	MAIL ADDRESS:	
		STREET 1:		605 RICHARD ARRINGTON JR BLVD N
		CITY:			BIRMINGHAM
		STATE:			AL
		ZIP:			35203

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALAGASCO INC
		DATE OF NAME CHANGE:	19851002
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-05-30</periodOfReport>
    <issuer>
        <issuerCik>0000277595</issuerCik>
        <issuerName>ENERGEN CORP</issuerName>
        <issuerTradingSymbol>EGN</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId>
            <rptOwnerCik>0001181830</rptOwnerCik>
            <rptOwnerName>REYNOLDS D C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>President of Subsidiary</officerTitle></reportingOwnerRelationship></reportingOwner><derivativeSecurity><securityTitle><value>Deferred Shares</value></securityTitle><conversionOrExercisePrice><value>0</value><footnoteId id="F1"/></conversionOrExercisePrice><transactionDate><value>2003-05-30</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>26</value></transactionShares><transactionValue><value>32.63</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>1988-08-08</value><footnoteId id="F2"/></exerciseDate><expirationDate><value>1988-08-08</value><footnoteId id="F2"/></expirationDate><underlyingSecurity><underlyin
gSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>26</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>3938</value><footnoteId id="F3"/><footnoteId id="F4"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></derivativeSecurity><footnotes><footnote id="F1">Securities convert to common stock on a one-for-one basis.</footnote><footnote id="F2">The first to occur of 70th birthday, termination of the Plan, termination for cause or one or more other events elected by the participant and approved by Energen.</footnote><footnote id="F3">Energen Corporation Deferred Compensation Plan, number of shares is estimated based on recordkeepers' unit accounting.  In addition, as previously reported under this Table II, the reporting person 
directly holds 43,060 stock options.  As previously reported under Table I, an additional 35,274 shares (which includes 1,030 restricted shares) are directly held.</footnote><footnote id="F4">The reporting person indirectly holds
(a) 13,078 shares under the Energen Corporation Employee Savings Plan (the number of shares is estimated based on the trustee's unit accounting
(b) 104 shares by wife
(c) 622 shares as custodian for son
(d) 360 shares as custodian for daughter</footnote></footnotes><ownerSignature><signatureName>J.D. Woodruff, Attorney in Fact</signatureName><signatureDate>2003-06-03</signatureDate></ownerSignature></ownershipDocument>

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