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      <ReconcilationRevenueExpnssAmt>-36407</ReconcilationRevenueExpnssAmt>
      <PriorPeriodAdjustmentsAmt>-47914</PriorPeriodAdjustmentsAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
    </IRS990>
    <IRS990ScheduleC documentId="RetDoc2">
      <SubstantiallyAllDuesNondedInd>true</SubstantiallyAllDuesNondedInd>
      <OnlyInHouseLobbyingInd>false</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>false</AgreeCarryoverPriorYearInd>
    </IRS990ScheduleC>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>ISACO STRIVES TO BE THE VOICE OF ALL 102 COUNTIES IN ILLINOIS. ISACO IS A HIGHLY VISIBLE CIVIC FORCE, WITH A DIVERSE BOARD OF DIRECTORS REPRESENTING ALL CORNERS OF THE STATE, PROVIDING LEADERSHIP AND SERVICES TO ENSURE FAIR, EFFECTIVE AND EFFICIENT GOVERNMENT FOR THE GOOD OF ALL COUNTIES AND ALL THE PEOPLE OF ILLINOIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE ARE FOUR CLASSES OF MEMBERSHIP WHICH ARE: ACTIVE, ASSOCIATE, SUSTAINING AND LIFE MEMBERS. ACTIVE MEMBERSHIP IS OPEN TO ANY COUNTY IN ILLINOIS THAS HAS PAID ITS MEMBERSHIP DUES AND ANY COUNTY ELECTED OR APPOINTED OFFICIAL FROM AN ACTIVE COUNTY. ASSOCIATE MEMBERSHIP IS OPEN TO FORMER ACTIVE MEMBERS. SUSTAINING MEMBERSHIP IS OPEN TO INDIVIDUALS, FIRMS, OR CORPORATIONS INTERESTED IN SUPPORTING THE PURPOSES OF THE ASSOCIATION. LIFE MEMBERSHIP INCLUDED PAST PRESIDENTS OR ANY FORMER ACTIVE MEMBER APPROVED BY A MAJORITY VOTE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS MADE AVAILABLE TO THE BOARD FOR REVIEW BEFORE IT IS FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICTS OF INTEREST ARE MONITORED ANNUALLY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>DOCUMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON WRITTEN REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>