<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-09-17</periodOfReport>
    <issuer>
        <issuerCik>0000032689</issuerCik>
        <issuerName>EMPIRE DISTRICT ELECTRIC CO</issuerName>
        <issuerTradingSymbol>EDE</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001106138</rptOwnerCik>
            <rptOwnerName>HARTLEY ROSS C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>THE EMPIRE DISTRICT ELECTRIC COMPANY</rptOwnerStreet1>
            <rptOwnerStreet2>602 JOPLIN STREET</rptOwnerStreet2>
            <rptOwnerCity>JOPLIN</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>64801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><securityTitle><value>Phantom Stock Units</value></securityTitle><conversionOrExercisePrice><value>0</value></conversionOrExercisePrice><transactionDate><value>2003-09-17</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1"/></transactionCoding><transactionAmounts><transactionShares><value>171.154</value></transactionShares><transactionPricePerShare><value>21.66</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>171.154</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>11756.128</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Shares of Phantom Stock units are awarded to director pursuant to Stock Unit Plan for Directors.</footnote><footnote id="F2">Shares of Phantom Stock units are exercisable upon retirement or death and do not expire.</footnote></footnotes><remarks/><ownerSignature><signatureName>Janet S. Watson Attorney-In-Fact</signatureName><signatureDate>2003-09-19</signatureDate></ownerSignature></ownershipDocument>

