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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-12-04</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>2006-12-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>424</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.54</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21649.494</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares of common stock were purchased in 2006 under the Company's 2006 Director Stock Purchase Plan and were exempt from the reporting liability provisions of Section 16 pursuant to Rule 16b-3 promulgated thereunder.</footnote>
        <footnote id="F2">Includes 213.466 shares of common stock that were purchased in 2006 under the 1996 Dividend Reinvestment Plan and were exempt from the reporting and short swing liability provisions under Section 16 pursuant to Rule 16a-11 promulgated thereunder.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Cader B. Cox, III</signatureName>
        <signatureDate>2006-12-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0202
4
2006-12-04
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
2006-12-04
4
P
0
424
28.54
A
21649.494
D
These shares of common stock were purchased in 2006 under the Company's 2006 Director Stock Purchase Plan and were exempt from the reporting liability provisions of Section 16 pursuant to Rule 16b-3 promulgated thereunder.
Includes 213.466 shares of common stock that were purchased in 2006 under the 1996 Dividend Reinvestment Plan and were exempt from the reporting and short swing liability provisions under Section 16 pursuant to Rule 16a-11 promulgated thereunder.
Cader B. Cox, III
2006-12-04