<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" returnVersion="2023v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-05-01T14:34:14-04:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>881876796</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>Rice Accounting &amp; Tax Service LLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1403 Locust St PO Box 652</AddressLine1Txt>
        <CityNm>Eldorado</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>62930</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>311737446</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>CASA OF SOUTHEASTERN ILLINOIS INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>CASA</BusinessNameControlTxt>
      <USAddress>
        <AddressLine1Txt>2 E LOCUST ST STE B1</AddressLine1Txt>
        <CityNm>HARRISBURG</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>62946</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>MARY J AGIN</PersonNm>
      <PersonTitleTxt>EXECUTIVE DIREC</PersonTitleTxt>
      <PhoneNum>6182533355</PhoneNum>
      <SignatureDt>2024-05-01</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>MARY</PersonFirstNm>
        <PersonLastNm>AGIN</PersonLastNm>
      </PersonFullName>
      <SSN>XXX-XX-XXXX</SSN>
    </SigningOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>Kathy J Rice</PreparerPersonNm>
      <PTIN>P00191126</PTIN>
      <PhoneNum>6182736262</PhoneNum>
      <PreparationDt>2024-05-01</PreparationDt>
      <SelfEmployedInd>X</SelfEmployedInd>
    </PreparerPersonGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>3</TrustedCustomerCd>
        <OOBSecurityVerificationCd>00</OOBSecurityVerificationCd>
        <AuthenticationAssuranceLevelCd>AAL2</AuthenticationAssuranceLevelCd>
        <IdentityAssuranceLevelCd>IAL1</IdentityAssuranceLevelCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2023</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="IRS990EZ">
      <NameChangeInd>X</NameChangeInd>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <Organization501c3Ind referenceDocumentId="990A">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>162989</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>108753</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>20619</ProgramServiceRevenueAmt>
      <FundraisingGrossIncomeAmt>33617</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>4691</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>28926</SpecialEventsNetIncomeLossAmt>
      <TotalRevenueAmt>158298</TotalRevenueAmt>
      <SalariesOtherCompEmplBnftAmt>64645</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>1810</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>19344</OccupancyRentUtltsAndMaintAmt>
      <OtherExpensesTotalAmt>61262</OtherExpensesTotalAmt>
      <TotalExpensesAmt>147061</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>11237</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>300820</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>-93</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>311964</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>66820</BOYAmt>
        <EOYAmt>83964</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>234000</BOYAmt>
        <EOYAmt>228000</EOYAmt>
      </LandAndBuildingsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>300820</BOYAmt>
        <EOYAmt>311964</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>300820</BOYAmt>
        <EOYAmt>311964</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>PROVIDE COURT APPOINTED ADVOCATES</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>THERE ARE 25 TRAINED VOLUNTEER ADVOCATES. THESE 25 VOLUNTEERS ADVOCATED FOR THE BEST INTEREST OF 94 CHILDREN IN THE JUVENILE COURT SYSTEM IN SALINE COUNTY, ILLINOIS.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>145722</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>145722</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARY J AGIN</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>40.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>40689</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>AMANDA MOORE</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>3.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ANDREW DRONE</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ELI ANGELLY</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>NINA BROWN</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>MARY J AGIN</PersonNm>
        <USAddress>
          <AddressLine1Txt>2 E LOCUST ST STE B1</AddressLine1Txt>
          <CityNm>HARRISBURG</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>62946</ZIPCd>
        </USAddress>
        <PhoneNum>6182533355</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="990A">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>26120</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>54912</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>84845</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>88854</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>108753</CurrentTaxYearAmt>
        <TotalAmt>363484</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TaxRevLeviedOrgnztnlBnft170Grp>
        <CurrentTaxYearMinus2YearsAmt>18023</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>23230</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>20619</CurrentTaxYearAmt>
        <TotalAmt>61872</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>26120</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>54912</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>102868</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>112084</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>129372</CurrentTaxYearAmt>
        <TotalAmt>425356</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>425356</PublicSupportTotal170Amt>
      <TotalSupportAmt>425356</TotalSupportAmt>
      <PublicSupportCY170Pct>1.00000</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.34840</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleG documentId="990G">
      <FundraisingEventInformationGrp>
        <Event1Nm>GOLF TOURN</Event1Nm>
        <GrossReceiptsEvent1Amt>33617</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>33617</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>4691</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>33617</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>33617</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>4691</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>4691</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>28926</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="990O">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Description of other expenses Part I line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Description AmountDepreciation from 4562 6,000AMEREN GRANT EXPENSE 2,368OFFICE EXPENSE 3,468ADVERTISING 2,084PAYROLL TAXES &amp; ANNUAL REPORTS 19,535DCFS GRANT EXPENSE 9,322CESF GRANT EXPENSE 853INSURANCE 9,010SUPPLIES AND MATERIALS 2,010PARTY EXPENSE 1,414POSHARD GRANT EXPENSE 4,054BOARD MEETING EXPENSE 201MILEAGE 943</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other changes in net assets or fund balances Part I line 20</FormAndLineReferenceDesc>
        <ExplanationTxt>Description AmountVOID FROM PRIOR YEAR EXPENSE (93)</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
