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<!--Generated by DFIN XBRL Instance Document - http://www.dfinsolutions.com/ - Version R3.0 - on 12-March-2024 [02:02:27] {PM}-->
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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_civb_CumulativePercentageOfPeerGroupTotalShareholder" xml:lang="en-US">Cumulative Percentage of Peer Group Total Shareholder</label>
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<loc xlink:type="locator" xlink:href="civb-20231231.xsd#civb_EquityAwardAdjustmentsMember" xlink:label="loc_civb_EquityAwardAdjustmentsMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_civb_EquityAwardAdjustmentsMember" xml:lang="en-US">Equity Award Adjustments [Member]</label>
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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_civb_PensionBenefitAdjustmentsMember" xml:lang="en-US">Pension Benefit Adjustments [Member]</label>
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<loc xlink:type="locator" xlink:href="civb-20231231.xsd#civb_ValueOfEquityAwardsMember" xlink:label="loc_civb_ValueOfEquityAwardsMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_civb_ValueOfEquityAwardsMember" xml:lang="en-US">Value of Equity Awards [Member]</label>
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