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        <classId>C000234660</classId>
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      <regFileNumber>811-02688</regFileNumber>
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      <regLei>549300RTFZS1V1PV8C63</regLei>
      <regStreet1>100 Bellevue Parkway</regStreet1>
      <regCity>Wilmington</regCity>
      <regStateConditional regCountry="US" regState="US-DE"/>
      <regZipOrPostalCode>19809</regZipOrPostalCode>
      <regPhone>800-441-7762</regPhone>
      <seriesName>BlackRock Impact Municipal Fund</seriesName>
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      <repPdEnd>2023-05-31</repPdEnd>
      <repPdDate>2023-02-28</repPdDate>
      <isFinalFiling>N</isFinalFiling>
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      <totLiabs>237074.32</totLiabs>
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      <assetsInvested>0.00000000</assetsInvested>
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      </invstOrSec>
      <invstOrSec>
        <name>Brevard County Health Facilities Authority</name>
        <lei>N/A</lei>
        <title>BREVARD CNTY FL HLTH FACS AUTH REVENUE</title>
        <cusip>107416QN2</cusip>
        <identifiers>
          <isin value="US107416QN22"/>
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        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>891375.00000000</valUSD>
        <pctVal>1.885357665232</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-04-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Mississippi Business Finance Corp</name>
        <lei>549300DYV074JUDKBQ77</lei>
        <title>MISSISSIPPI ST BUSINESS FIN CORP EXEPT FACS REVENUE</title>
        <cusip>60528DAA6</cusip>
        <identifiers>
          <isin value="US60528DAA63"/>
        </identifiers>
        <balance>100000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>100085.60000000</valUSD>
        <pctVal>0.211692220602</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-07-15</maturityDt>
          <couponKind>Floating</couponKind>
          <annualizedRt>7.75000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Battery Park City Authority</name>
        <lei>549300RF3SFDOWRHVM56</lei>
        <title>BATTERY PARK CITY NY AUTH</title>
        <cusip>07133AHJ4</cusip>
        <identifiers>
          <isin value="US07133AHJ43"/>
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        <balance>1500000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1452991.50000000</valUSD>
        <pctVal>3.073239278689</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-11-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Ohio State University/The</name>
        <lei>JFC10ZULKO4X2E3HBY86</lei>
        <title>OHIO ST UNIV</title>
        <cusip>677632E72</cusip>
        <identifiers>
          <isin value="US677632E720"/>
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        <balance>500000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>500000.00000000</valUSD>
        <pctVal>1.057555835216</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2039-12-01</maturityDt>
          <couponKind>Floating</couponKind>
          <annualizedRt>3.35000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Duluth Economic Development Authority</name>
        <lei>N/A</lei>
        <title>DULUTH MN ECON DEV AUTH HLTH CARE FACS REVENUE</title>
        <cusip>26444CKJ0</cusip>
        <identifiers>
          <isin value="US26444CKJ08"/>
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        <balance>500000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>504526.00000000</valUSD>
        <pctVal>1.067128830636</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-06-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.25000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Ludington Area School District</name>
        <lei>N/A</lei>
        <title>LUDINGTON MI AREA SCH DIST</title>
        <cusip>549637GU4</cusip>
        <identifiers>
          <isin value="US549637GU47"/>
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        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>930181.00000000</valUSD>
        <pctVal>1.967436688715</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2051-05-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>City of Philadelphia PA Water &amp; Wastewater Revenue</name>
        <lei>N/A</lei>
        <title>PHILADELPHIA PA WTR &amp; WSTWTR REVENUE</title>
        <cusip>717893Z79</cusip>
        <identifiers>
          <isin value="US717893Z790"/>
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        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1107127.00000000</valUSD>
        <pctVal>2.341697238351</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-06-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.50000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Finance Authority of Maine</name>
        <lei>N/A</lei>
        <title>MAINE ST FIN AUTH</title>
        <cusip>56042BBU0</cusip>
        <identifiers>
          <isin value="US56042BBU08"/>
        </identifiers>
        <balance>100000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>62987.20000000</valUSD>
        <pctVal>0.133224961807</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2051-12-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>8.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Southeastern Pennsylvania Transportation Authority</name>
        <lei>98450061A2F3FD36E493</lei>
        <title>S ESTRN PA TRANSPRTN AUTH</title>
        <cusip>842039FQ7</cusip>
        <identifiers>
          <isin value="US842039FQ70"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1101751.00000000</valUSD>
        <pctVal>2.330326398011</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-06-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.25000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>New York City Municipal Water Finance Authority</name>
        <lei>549300Q2EHQ6RJPQKP05</lei>
        <title>NEW YORK CITY NY MUNI WTR FIN AUTH WTR &amp; SWR SYS REVENUE</title>
        <cusip>64972GZR8</cusip>
        <identifiers>
          <isin value="US64972GZR81"/>
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        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>941996.00000000</valUSD>
        <pctVal>1.992426733101</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-06-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>University of Arkansas</name>
        <lei>549300FFADBQ3NEI2D96</lei>
        <title>UNIV OF ARKANSAS AR UNIV REVENUE</title>
        <cusip>914073DU2</cusip>
        <identifiers>
          <isin value="US914073DU21"/>
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        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1071637.00000000</valUSD>
        <pctVal>2.266631925167</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-04-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>New Hope Cultural Education Facilities Finance Corp</name>
        <lei>N/A</lei>
        <title>NEW HOPE CULTURAL ED FACS FIN CORP TX RETIREMENT FAC REVENUE</title>
        <cusip>64542UGF5</cusip>
        <identifiers>
          <isin value="US64542UGF57"/>
        </identifiers>
        <balance>100000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>96531.80000000</valUSD>
        <pctVal>0.204175536747</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-10-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>6.63000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>California Public Finance Authority</name>
        <lei>N/A</lei>
        <title>CALIFORNIA PUBLIC FIN AUTH REVENUE</title>
        <cusip>13057EFP4</cusip>
        <identifiers>
          <isin value="US13057EFP43"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>943082.00000000</valUSD>
        <pctVal>1.994723744375</pctVal>
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        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2051-07-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Jefferson Parish Consolidated Sewerage District No 1</name>
        <lei>N/A</lei>
        <title>JEFFERSON PARISH LA CONSOL SEWERAGE DIST #1 SWR REVENUE</title>
        <cusip>474481AS7</cusip>
        <identifiers>
          <isin value="US474481AS78"/>
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        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>961775.00000000</valUSD>
        <pctVal>2.034261526830</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2039-02-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Illinois Housing Development Authority</name>
        <lei>54930053Z6M9JVHBQZ16</lei>
        <title>ILLINOIS ST HSG DEV AUTH REVENUE</title>
        <cusip>45203MKB6</cusip>
        <identifiers>
          <isin value="US45203MKB62"/>
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        <balance>350000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>381900.40000000</valUSD>
        <pctVal>0.807761992983</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-10-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>6.25000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Tennessee Housing Development Agency</name>
        <lei>N/A</lei>
        <title>TENNESSEE HSG DEV AGY RSDL FIN PROGRAM REVENUE</title>
        <cusip>8804618A9</cusip>
        <identifiers>
          <isin value="US8804618A98"/>
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        <balance>200000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>197474.00000000</valUSD>
        <pctVal>0.417679562007</pctVal>
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        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>3.75000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Louisiana Public Facilities Authority</name>
        <lei>549300RQIPT5S4P4M065</lei>
        <title>LOUISIANA PUB FACS AUTH REVENUE</title>
        <cusip>546399PH3</cusip>
        <identifiers>
          <isin value="US546399PH39"/>
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        <balance>250000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>251814.00000000</valUSD>
        <pctVal>0.532614730178</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-06-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>6.38000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>City of Henderson KY</name>
        <lei>549300UJ32J1O26W1T80</lei>
        <title>HENDERSON KY EXEMPT FACS REVENUE</title>
        <cusip>425099AB4</cusip>
        <identifiers>
          <isin value="US425099AB40"/>
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        <balance>500000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>469714.50000000</valUSD>
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        <fairValLevel>2</fairValLevel>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Massachusetts Bay Transportation Authority Assessment Revenue</name>
        <lei>N/A</lei>
        <title>MASSACHUSETTS BAY MA TRANSPRTN AUTH REVENUE</title>
        <cusip>575577NZ0</cusip>
        <identifiers>
          <isin value="US575577NZ08"/>
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        <balance>1500000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>1629079.50000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <maturityDt>2052-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Georgia Housing &amp; Finance Authority</name>
        <lei>549300I628IMF9PWV724</lei>
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        <cusip>37353PJP5</cusip>
        <identifiers>
          <isin value="US37353PJP53"/>
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        <balance>325000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>331960.20000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2049-06-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>BlackRock Liquidity Funds</name>
        <lei>5493007YVNX55LTRQ706</lei>
        <title>BlackRock Liquidity Funds: MuniCash, Institutional Shares</title>
        <cusip>09248U841</cusip>
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          <isin value="US09248U8412"/>
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        <balance>1857564.78000000</balance>
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        <curCd>USD</curCd>
        <valUSD>1857379.02000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Metropolitan Transportation Authority</name>
        <lei>5493000TKYODLXADQD60</lei>
        <title>MET TRANSPRTN AUTH NY REVENUE</title>
        <cusip>59261AD87</cusip>
        <identifiers>
          <isin value="US59261AD879"/>
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        <balance>1000000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>987224.00000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2049-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>North Carolina Housing Finance Agency</name>
        <lei>EC4EE0PS5OP5O69B5C39</lei>
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        <cusip>658207Q65</cusip>
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          <isin value="US658207Q652"/>
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        <balance>250000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>246847.50000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2052-07-01</maturityDt>
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          <annualizedRt>3.75000000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Maryland Economic Development Corp</name>
        <lei>549300JJ16DDBSZWSN94</lei>
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        <cusip>57422JBY3</cusip>
        <identifiers>
          <isin value="US57422JBY38"/>
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        <balance>715000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>718653.65000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-06-30</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.25000000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Build NYC Resource Corp</name>
        <lei>549300GROJFKMNLWEK84</lei>
        <title>BUILD NYC RESOURCE CORP NY REVENUE</title>
        <cusip>12008ETJ5</cusip>
        <identifiers>
          <isin value="US12008ETJ54"/>
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        <balance>250000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>252530.75000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-06-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.75000000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Texas State Technical College</name>
        <lei>N/A</lei>
        <title>TEXAS ST TECH CLG SYS FING SYS REVENUE</title>
        <cusip>88276RFJ6</cusip>
        <identifiers>
          <isin value="US88276RFJ68"/>
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        <balance>665000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>747842.38000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-08-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.50000000</annualizedRt>
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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
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      <invstOrSec>
        <name>Chicago Board of Trade</name>
        <lei>549300EX04Q2QBFQTQ27</lei>
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        <cusip>000000000</cusip>
        <identifiers>
          <other otherDesc="BlackRock Identifier" value="TYM320235"/>
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        <balance>-23.00000000</balance>
        <units>NC</units>
        <curCd>USD</curCd>
        <valUSD>3417.80000000</valUSD>
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        <assetCat>DIR</assetCat>
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        <isRestrictedSec>N</isRestrictedSec>

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      <invstOrSec>
        <name>Arizona Industrial Development Authority</name>
        <lei>N/A</lei>
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          <isin value="US04052BSY10"/>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <annualizedRt>5.25000000</annualizedRt>
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      <invstOrSec>
        <name>Chicago Transit Authority Sales Tax Receipts Fund</name>
        <lei>N/A</lei>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2057-12-01</maturityDt>
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      <invstOrSec>
        <name>Chicago Board of Education</name>
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        <assetCat>DBT</assetCat>
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        <fairValLevel>2</fairValLevel>
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        <name>Henrico County Economic Development Authority</name>
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        <name>District of Columbia</name>
        <lei>549300HWFOZXPKGOX654</lei>
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        <invCountry>US</invCountry>
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      <invstOrSec>
        <name>Sumter County Industrial Development Authority/AL</name>
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      <invstOrSec>
        <name>Southern Ohio Port Authority</name>
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        <invCountry>US</invCountry>
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      <invstOrSec>
        <name>Build NYC Resource Corp</name>
        <lei>549300GROJFKMNLWEK84</lei>
        <title>BUILD NYC RESOURCE CORP NY REVENUE</title>
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          <isin value="US12008ESL10"/>
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        <balance>245000.00000000</balance>
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        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2032-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>State of Connecticut</name>
        <lei>5493007GRO6CU0IKP741</lei>
        <title>CONNECTICUT ST</title>
        <cusip>20772KQA0</cusip>
        <identifiers>
          <isin value="US20772KQA06"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1091144.00000000</valUSD>
        <pctVal>2.307891408522</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-01-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>North Dakota Housing Finance Agency</name>
        <lei>549300DVQAGW0B16JX70</lei>
        <title>NORTH DAKOTA ST HSG FIN AGY</title>
        <cusip>658909M37</cusip>
        <identifiers>
          <isin value="US658909M371"/>
        </identifiers>
        <balance>230000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>229781.50000000</valUSD>
        <pctVal>0.486013532299</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2053-01-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>City of El Paso TX Water &amp; Sewer Revenue</name>
        <lei>N/A</lei>
        <title>EL PASO TX WTR &amp; SWR REVENUE</title>
        <cusip>283822WH3</cusip>
        <identifiers>
          <isin value="US283822WH37"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1065729.00000000</valUSD>
        <pctVal>2.254135845418</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2046-03-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>California Community Choice Financing Authority</name>
        <lei>549300X8VKJ215S2R571</lei>
        <title>CALIFORNIA CMNTY CHOICE FING AUTH CLEAN ENERGY PROJ REVENUE</title>
        <cusip>13013JCM6</cusip>
        <identifiers>
          <isin value="US13013JCM62"/>
        </identifiers>
        <balance>740000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>770114.30000000</valUSD>
        <pctVal>1.628877743497</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2054-01-01</maturityDt>
          <couponKind>Floating</couponKind>
          <annualizedRt>5.25000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>County of Miami-Dade FL Water &amp; Sewer System Revenue</name>
        <lei>N/A</lei>
        <title>MIAMI-DADE CNTY FL WTR &amp; SWR REVENUE</title>
        <cusip>59334DMR2</cusip>
        <identifiers>
          <isin value="US59334DMR25"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>912268.00000000</valUSD>
        <pctVal>1.929548693362</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2048-10-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Camden County Improvement Authority/The</name>
        <lei>549300UTQBT9ZE0QFB15</lei>
        <title>CAMDEN CNTY NJ IMPT AUTH SCH REVENUE</title>
        <cusip>13281PAB3</cusip>
        <identifiers>
          <isin value="US13281PAB31"/>
        </identifiers>
        <balance>115000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>120266.43000000</valUSD>
        <pctVal>0.254376929654</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-06-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>6.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>CSCDA Community Improvement Authority</name>
        <lei>N/A</lei>
        <title>CSCDA CMNTY IMPT AUTH CA ESSENTIAL HSG REVENUE</title>
        <cusip>126292AW1</cusip>
        <identifiers>
          <isin value="US126292AW10"/>
        </identifiers>
        <balance>350000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>232909.60000000</valUSD>
        <pctVal>0.492629813115</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2057-02-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>3.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Oregon State Facilities Authority</name>
        <lei>N/A</lei>
        <title>OREGON ST FACS AUTH REVENUE</title>
        <cusip>68608JZB0</cusip>
        <identifiers>
          <isin value="US68608JZB06"/>
        </identifiers>
        <balance>125000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>128250.50000000</valUSD>
        <pctVal>0.271264129288</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2052-06-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>


      <explntrNote note="Monthly returns presented in Item B.5(a) have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>



    </explntrNotes>
    <signature>
      <ncom:dateSigned>2023-03-30</ncom:dateSigned>
      <ncom:nameOfApplicant>BlackRock Municipal Bond Fund, Inc.</ncom:nameOfApplicant>
      <ncom:signature>Chuck Pulsfort</ncom:signature>
      <ncom:signerName>Chuck Pulsfort</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
