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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 5YyTyjB2LbCWEpoLA+4C+A==

<SEC-DOCUMENT>0001181431-03-012729.txt : 20030702
<SEC-HEADER>0001181431-03-012729.hdr.sgml : 20030702
<ACCEPTANCE-DATETIME>20030702151705
ACCESSION NUMBER:		0001181431-03-012729
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030702
FILED AS OF DATE:		20030702

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SHERMAN JOHN J
		CENTRAL INDEX KEY:			0001193467

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-32453
		FILM NUMBER:		03771613

	BUSINESS ADDRESS:	
		STREET 1:		TWO BRUSH CREEK BLVD.
		STREET 2:		SUITE 200
		CITY:			KANSAS CITY
		STATE:			MO
		ZIP:			64112

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INERGY L P
		CENTRAL INDEX KEY:			0001136352
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-NONSTORE RETAILERS [5960]
		IRS NUMBER:				431918951
		STATE OF INCORPORATION:			MO

	BUSINESS ADDRESS:	
		STREET 1:		TWO BRUSH CREEK
		STREET 2:		SUITE 200
		CITY:			KANSAS CITY
		STATE:			MS
		ZIP:			64112
		BUSINESS PHONE:		8168428181
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd12565.xml
<DESCRIPTION>FORM 4 - JULY 2003
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
<periodOfReport>2003-07-02</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0001136352</issuerCik>
        <issuerName>INERGY L P</issuerName>
        <issuerTradingSymbol>NRGY</issuerTradingSymbol></issuer>
<reportingOwner>
<reportingOwnerId>
            <rptOwnerCik>0001193467</rptOwnerCik>
            <rptOwnerName>SHERMAN JOHN J</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/CEO</officerTitle>
<otherText></otherText></reportingOwnerRelationship></reportingOwner>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Units</value></securityTitle>
<transactionDate>
<value>2003-07-01</value></transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>I</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved></transactionCoding>
<transactionTimeliness>
<value></value></transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>88.768</value></transactionShares>
<transactionValue>
<value>38.7242</value></transactionValue>
<transactionAcquiredDisposedCode>
<value>A</value></transactionAcquiredDisposedCode></transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>500.25567</value>
<footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>I</value></directOrIndirectOwnership>
<natureOfOwnership>
<value>By unit purchase plan</value></natureOfOwnership></ownershipNature></nonDerivativeSecurity>
<footnotes>
<footnote id="F1">In addition to the units held indirectly through the unit purchase plan, Mr. Sherman also holds 404,601 units indrectly as follows:  10,000 common units are held by Inergy Partners LLC, of which Inergy Holdings LLC has 100% voting control.  Mr. Sherman holds an ownership interest in and has voting control of Inergy Holdings.  Mr. Sherman disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest.  394,601 common units are held by IPCH Acquisition Corp., a wholly-owned subsidiary of Inergy Holdings, LLC. Mr. Sherman holds an ownership interest in and has voting control of Inergy Holdings. Mr. Sherman disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest.</footnote></footnotes>
<ownerSignature>
<signatureName>John J. Sherman</signatureName>
<signatureDate>2003-07-02</signatureDate></ownerSignature></ownershipDocument>


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