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

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001878021</cik>
        <entityName>Carroll County Bancshares, Inc. / IA</entityName>
        <issuerAddress>
            <street1>126 WEST 6TH ST.</street1>
            <city>CARROLL</city>
            <stateOrCountry>IA</stateOrCountry>
            <stateOrCountryDescription>IOWA</stateOrCountryDescription>
            <zipCode>51401</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>712-792-3567</issuerPhoneNumber>
        <jurisdictionOfInc>IOWA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Thomas</firstName>
                <lastName>Gronstal</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>12945 253rd Ave</street1>
                <city>Spirit Lake</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>51360</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jaclyn</firstName>
                <lastName>Mahler</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>920 S 5th Street</street1>
                <city>Sac City</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>50583</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeffrey</firstName>
                <lastName>Scharfenkamp</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>485 Deer Creek Lane</street1>
                <city>Carroll</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>51401</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Carol</firstName>
                <lastName>Gronstal</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>224 Lynn Street</street1>
                <street2>#3</street2>
                <city>Carroll</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>51401</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ingrid</firstName>
                <lastName>Gronstal</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>226 Woodridge Ave</street1>
                <city>Iowa City</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>52245</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <lastName>Gronstal</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8554 Arbor Street</street1>
                <city>Omaha</city>
                <stateOrCountry>NE</stateOrCountry>
                <stateOrCountryDescription>NEBRASKA</stateOrCountryDescription>
                <zipCode>68124</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Matthew</firstName>
                <lastName>Gronstal</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>23363 Sunshine Lane</street1>
                <city>Council Bluffs</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>51503</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Stephen</firstName>
                <lastName>Baade</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>47171 200th Avenue</street1>
                <city>Havelock</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>50546</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeffrey</firstName>
                <lastName>Johnson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1201 4th Ave NW</street1>
                <city>Pocahontas</city>
                <stateOrCountry>IA</stateOrCountry>
                <stateOrCountryDescription>IOWA</stateOrCountryDescription>
                <zipCode>50574</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Banking and Financial Services</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$5,000,001 - $25,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001878021-21-000001</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2021-07-23</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isDebtType>true</isDebtType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Bankers' Bank</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>7700 Mineral Point Road</street1>
                    <city>Madison</city>
                    <stateOrCountry>WI</stateOrCountry>
                    <stateOrCountryDescription>WISCONSIN</stateOrCountryDescription>
                    <zipCode>53717</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>IA</state>
                    <description>IOWA</description>
                    <state>WI</state>
                    <description>WISCONSIN</description>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>20000000</totalOfferingAmount>
            <totalAmountSold>20000000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>7</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>225000</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Carroll County Bancshares, Inc. / IA</issuerName>
                <signatureName>Grace E. Bogart</signatureName>
                <nameOfSigner>Grace E. Bogart</nameOfSigner>
                <signatureTitle>Attorney for Filer</signatureTitle>
                <signatureDate>2021-08-13</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
