<SUBMISSION>
<ACCESSION-NUMBER>0001091667-08-000178
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20081013
<FILING-DATE>20081014
<DATE-OF-FILING-DATE-CHANGE>20081014
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CHARTER COMMUNICATIONS INC /MO/
<CIK>0001091667
<ASSIGNED-SIC>4841
<IRS-NUMBER>431857213
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0807
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>12405 POWERSCOURT DRIVE
<STREET2>SUITE 100
<CITY>ST LOUIS
<STATE>MO
<ZIP>63131
<PHONE>3145435712
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>12405 POWERSCOURT DRIVE
<STREET2>SUITE 100
<CITY>ST LOUIS
<STATE>MO
<ZIP>63131
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>RACLIN GRIER C
<CIK>0001221511
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-33664
<FILM-NUMBER>081120341
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>12851 WORLDGATE DR
<CITY>HERNDON
<STATE>VA
<ZIP>20170
<PHONE>7032348252
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-10-13</periodOfReport>

    <issuer>
        <issuerCik>0001091667</issuerCik>
        <issuerName>CHARTER COMMUNICATIONS INC /MO/</issuerName>
        <issuerTradingSymbol>CHTR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001221511</rptOwnerCik>
            <rptOwnerName>RACLIN GRIER C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CHARTER COMMUNICATIONS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>12405 POWERSCOURT DRIVE</rptOwnerStreet2>
            <rptOwnerCity>ST. LOUIS</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP/General Counsel/Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-10-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5951</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>.48</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1182351</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Previously reported restricted shares vested on October 10, 2008.  Sale pursuant to previously adopted Rule 10b5-1 trading plan to automatically sell enough shares for the purpose of paying taxes due upon vesting.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Grier C. Raclin</signatureName>
        <signatureDate>2008-10-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
