-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MNibpsoXBsQvaK8pOvHaPhUr1gsVqGf1DG62rSz1nuMbf7fuxmB9C0f81JcF9xDB
 OWt2EO/eXC/4LeKy/iIYuA==

<SEC-DOCUMENT>0000928465-04-000023.txt : 20040224
<SEC-HEADER>0000928465-04-000023.hdr.sgml : 20040224
<ACCEPTANCE-DATETIME>20040224171607
ACCESSION NUMBER:		0000928465-04-000023
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040220
FILED AS OF DATE:		20040224

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HOPPNER WILLIAM R
		CENTRAL INDEX KEY:			0001032252

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15589
		FILM NUMBER:		04625518

	BUSINESS ADDRESS:	
		STREET 1:		1500 REGENCY DRIVE
		CITY:			LINCOLN
		STATE:			NE
		ZIP:			68506
		BUSINESS PHONE:		4024831546

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMCON DISTRIBUTING CO
		CENTRAL INDEX KEY:			0000928465
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-GROCERIES & GENERAL LINE [5141]
		IRS NUMBER:				470702918
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		7405 IRVINGTON ROAD
		STREET 2:		POST OFFICE BOX 641940 (68164-7940)
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68122
		BUSINESS PHONE:		4023313727

	MAIL ADDRESS:	
		STREET 1:		7405 IRVINGTON ROAD
		STREET 2:		POST OFFICE BOX 641940 (68164-7940)
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68122
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-02-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000928465</issuerCik>
        <issuerName>AMCON DISTRIBUTING CO</issuerName>
        <issuerTradingSymbol>DIT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001032252</rptOwnerCik>
            <rptOwnerName>HOPPNER WILLIAM R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6606 SOUTH 34TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LINCOLN</rptOwnerCity>
            <rptOwnerState>NE</rptOwnerState>
            <rptOwnerZipCode>68516</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, Par Value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2004-02-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.9</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>93625</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>William R. Hoppner</signatureName>
        <signatureDate>2004-02-24</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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