<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xsi:schemaLocation="http://www.sec.gov/edgar/thirteenffiler eis_13F_Filer.xsd" xmlns="http://www.sec.gov/edgar/thirteenffiler" xmlns:common="http://www.sec.gov/edgar/common" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <!--Generated by CompSci Transform (tm) - http://www.compsciresources.com-->
  <!--Created: Thu Feb 12 19:40:36 UTC 2026-->
  <schemaVersion>X0202</schemaVersion>
  <headerData>
    <submissionType>13F-HR</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <credentials>
          <cik>0001029311</cik>
          <ccc>XXXXXXXX</ccc>
        </credentials>
      </filer>
      <periodOfReport>12-31-2025</periodOfReport>
    </filerInfo>
  </headerData>
  <formData>
    <coverPage>
      <reportCalendarOrQuarter>12-31-2025</reportCalendarOrQuarter>
      <filingManager>
        <name>BANC FUNDS CO LLC</name>
        <address>
          <common:street1>150 S. WACKER DRIVE</common:street1>
          <common:street2>SUITE 2725</common:street2>
          <common:city>CHICAGO</common:city>
          <common:stateOrCountry>IL</common:stateOrCountry>
          <common:zipCode>60606</common:zipCode>
        </address>
      </filingManager>
      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-06701</form13FFileNumber>
      <provideInfoForInstruction5>N</provideInfoForInstruction5>
    </coverPage>
    <signatureBlock>
      <name>JOHN M BAKER</name>
      <title>MEMBER</title>
      <phone>312-855-4067</phone>
      <signature>JOHN M BAKER</signature>
      <city>CHICAGO</city>
      <stateOrCountry>IL</stateOrCountry>
      <signatureDate>02-12-2026</signatureDate>
    </signatureBlock>
    <summaryPage>
      <otherIncludedManagersCount>0</otherIncludedManagersCount>
      <tableEntryTotal>98</tableEntryTotal>
      <tableValueTotal>505198862</tableValueTotal>
    </summaryPage>
  </formData>
</edgarSubmission>
