<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-09-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000726601</issuerCik>
        <issuerName>CAPITAL CITY BANK GROUP INC</issuerName>
        <issuerTradingSymbol>CCBG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001243390</rptOwnerCik>
            <rptOwnerName>COX CADER B III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11991 RIVERVIEW ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CAMILLA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>31730</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-09-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>102</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>31.81</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>19540.123</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2500</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Spouse - Martha F.H. Cox</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares of common stock were purchased in 2005 under the Company's 2005 Director Stock Purchase Plan and were exempt from the reporting liability provisions of Section 16 puursuant to Rule 16b-3 promulgated thereunder.</footnote>
        <footnote id="F2">Includes 517.524 shares of common stock that were purchased in 2005 under the Company's 1996 Dividend Reivestment Plan and were exempt from the reporting and short-swing liability provisions under Section 16 pursuant to Rule 16a-11 promulgated thereunder.</footnote>
        <footnote id="F3">These shares have been adjusted for the 5 for 4 stock split efeecetive July 1, 2005.</footnote>
        <footnote id="F4">These shares have been adjusted for the 5 for 4 stock split effective July 1, 2005.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Cader B. Cox, III</signatureName>
        <signatureDate>2005-09-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0202
4
2005-09-08
0
0000726601
CAPITAL CITY BANK GROUP INC
CCBG
0001243390
COX CADER B III
11991 RIVERVIEW ROAD
CAMILLA
GA
31730
1
0
0
0
Common Stock
2005-09-08
4
P
0
102
31.81
A
19540.123
D
Common Stock
2500
I
Spouse - Martha F.H. Cox
These shares of common stock were purchased in 2005 under the Company's 2005 Director Stock Purchase Plan and were exempt from the reporting liability provisions of Section 16 puursuant to Rule 16b-3 promulgated thereunder.
Includes 517.524 shares of common stock that were purchased in 2005 under the Company's 1996 Dividend Reivestment Plan and were exempt from the reporting and short-swing liability provisions under Section 16 pursuant to Rule 16a-11 promulgated thereunder.
These shares have been adjusted for the 5 for 4 stock split efeecetive July 1, 2005.
These shares have been adjusted for the 5 for 4 stock split effective July 1, 2005.
Cader B. Cox, III
2005-09-09