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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001140361-10-046851.txt : 20101122
<SEC-HEADER>0001140361-10-046851.hdr.sgml : 20101122
<ACCEPTANCE-DATETIME>20101122181310
ACCESSION NUMBER:		0001140361-10-046851
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101116
FILED AS OF DATE:		20101122
DATE AS OF CHANGE:		20101122

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ludwig Eugene
		CENTRAL INDEX KEY:			0001453863

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30248
		FILM NUMBER:		101209843

	MAIL ADDRESS:	
		STREET 1:		280 PARK AVENUE, 40TH FLOOR WEST
		STREET 2:		SUITE 401
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			JACKSONVILLE BANCORP INC /FL/
		CENTRAL INDEX KEY:			0001071264
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				593472981
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 NORTH LAURA STREET, SUITE 1000
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202
		BUSINESS PHONE:		9044213040

	MAIL ADDRESS:	
		STREET 1:		100 NORTH LAURA STREET, SUITE 1000
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CapGen Capital Group IV LP
		CENTRAL INDEX KEY:			0001505877
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30248
		FILM NUMBER:		101209844

	BUSINESS ADDRESS:	
		STREET 1:		280 PARK AVENUE, 4-TH FLOOR WEST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		212-542-6868

	MAIL ADDRESS:	
		STREET 1:		280 PARK AVENUE, 4-TH FLOOR WEST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CapGen Capital Group IV LLC
		CENTRAL INDEX KEY:			0001505878
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30248
		FILM NUMBER:		101209845

	BUSINESS ADDRESS:	
		STREET 1:		280 PARK AVENUE, 40TH FLOOR WEST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		212-542-6868

	MAIL ADDRESS:	
		STREET 1:		280 PARK AVENUE, 40TH FLOOR WEST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-11-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001071264</issuerCik>
        <issuerName>JACKSONVILLE BANCORP INC /FL/</issuerName>
        <issuerTradingSymbol>JAXB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001505877</rptOwnerCik>
            <rptOwnerName>CapGen Capital Group IV LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>280 PARK AVENUE, 40TH FLOOR WEST</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 401</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>*See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001505878</rptOwnerCik>
            <rptOwnerName>CapGen Capital Group IV LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>280 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>40TH FLOOR WEST SUITE 401</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001453863</rptOwnerCik>
            <rptOwnerName>Ludwig Eugene</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>280 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>40TH FLOOR WEST SUITE 401</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2010-11-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2684144</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Held by CapGen Capital Group IV LP</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">CapGen Capital Group IV LP (&quot;CapGen LP&quot;) acquired the shares of common stock, par value $0.01 per share (the &quot;Common Stock&quot;), of Jacksonville Bancorp, Inc. (the &quot;Issuer&quot;) on November 16, 2010. CapGen Capital Group IV LLC (&quot;CapGen LLC&quot;) is the sole general partner of CapGen LP. Mr. Eugene A. Ludwig is the managing member of CapGen LLC.</footnote>
        <footnote id="F2">CapGen LP directly owns the shares of Common Stock on this row.</footnote>
        <footnote id="F3">As the sole general partner of CapGenLP, CapGen LLC may be deemed to be the indirect beneficial owner of the shares of Common Stock on this row under Rule 16a-1(a)(2) promulgated under the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;). Pursuant to Rule 16a-1(a)(4) promulgated under the Exchange Act, CapGen LLC disclaims that it is the beneficial owner of such shares, except to the extent of its pecuniary interest.</footnote>
        <footnote id="F4">As the managing member of CapGen LLC, Mr. Ludwig may be deemed to be the indirect beneficial owner of the shares of Common Stock under Rule 16a-1(a)(2) promulgated under the Exchange Act. Pursuant to Rule 16a-1(a)(4) promulgated under the Exchange Act, Mr. Ludwig disclaims that he is the beneficial owner of such shares, except to the extent of his pecuniary interest.</footnote>
    </footnotes>

    <remarks>CapGen LP, CapGen LLC and Mr. Ludwig disclaim their status as directors by deputization by virtue of Messrs. John Rose's and John Sullivan's positions as members of the board of directors of the Issuer.</remarks>

    <ownerSignature>
        <signatureName>/s/ Eugene A. Ludwig, the managing member of CapGen Capital Group IV LLC, the general partner of CapGen Capital Group IV LP</signatureName>
        <signatureDate>2010-11-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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