-----BEGIN PRIVACY-ENHANCED MESSAGE-----
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,
 U3hkX+Qj/QUGUuATUXyUlpwd3ZNA4Kl7iFUy8zbUYBbTQFPu5WviFPyZK2NcHXtM
 Bu5oOuZmRWhJRl1IXqDoNA==

<SEC-DOCUMENT>0000078460-06-000037.txt : 20060710
<SEC-HEADER>0000078460-06-000037.hdr.sgml : 20060710
<ACCEPTANCE-DATETIME>20060710135318
ACCESSION NUMBER:		0000078460-06-000037
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060701
FILED AS OF DATE:		20060710
DATE AS OF CHANGE:		20060710

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PIEDMONT NATURAL GAS CO INC
		CENTRAL INDEX KEY:			0000078460
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS DISTRIBUTION [4924]
		IRS NUMBER:				560556998
		STATE OF INCORPORATION:			NC
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		1915 REXFORD RD
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28211
		BUSINESS PHONE:		7043643120

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 33068
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28233

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Wilson-McElreath Vicki H
		CENTRAL INDEX KEY:			0001368571

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06196
		FILM NUMBER:		06953340

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		704.364.3120

	MAIL ADDRESS:	
		STREET 1:		PO BOX 33068
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28233
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-07-01</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000078460</issuerCik>
        <issuerName>PIEDMONT NATURAL GAS CO INC</issuerName>
        <issuerTradingSymbol>PNY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001368571</rptOwnerCik>
            <rptOwnerName>Wilson-McElreath Vicki H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PO BOX 33068</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28233</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2188.332</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Jane R. Lewis-Raymond by limited power of attorney for Vicki H. Wilson-McElreath</signatureName>
        <signatureDate>2006-07-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----