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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-03-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000932781</issuerCik>
        <issuerName>FIRST COMMUNITY CORP /SC/</issuerName>
        <issuerTradingSymbol>FCCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252555</rptOwnerCik>
            <rptOwnerName>CHAO CHIMIN J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O FIRST COMMUNITY CORP</rptOwnerStreet1>
            <rptOwnerStreet2>P O BOX 64</rptOwnerStreet2>
            <rptOwnerCity>LEXINGTON</rptOwnerCity>
            <rptOwnerState>SC</rptOwnerState>
            <rptOwnerZipCode>29071</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>2022-03-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>859</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.02</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>79515</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person has elected to defer compensation in the form of deferred stock units under the First Community Corporation Amended and Restated Non-Employee Director Deferred Compensation Plan (the &quot;Plan&quot;). Pursuant to the terms of the Plan, the reporting person was credited with 859 deferred stock units, based on the amount of compensation deferred by the reporting person under the Plan during the first quarter of 2022 divided by the First Community Corporation common stock consolidated closing bid price of $21.02 on March 31, 2022.</footnote>
        <footnote id="F2">Includes 39,689 deferred stock units under the First Community Corporation Amended and Restated Non-Employee Director Deferred Compensation Plan (the &quot;Plan&quot;), including 239 deferred stock units credited pursuant to the terms of the Plan as dividend equivalents during the first quarter of 2022. Deferred stock units under the Plan receive dividend equivalents in the form of additional deferred stock units, and shares of First Community Corporation common stock will be issued on a one-for-one basis in respect of deferred stock units upon a distribution from the Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ D. SHAWN JORDAN, AS ATTORNEY-IN-FACT</signatureName>
        <signatureDate>2022-04-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
