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2010 Census Block Maps - File Naming Conventions

American Indian, Alaska Native, and Native Hawaiian Areas

The file names for the American Indian, Alaska Native, or Native Hawaiian Areas-based 2010 Census Block Maps and the corresponding Block to Map Sheet File are composed as follows:

DC10BLK_<MT><FFFF>_<###>.pdf
DC10BLK_<MT><FFFF>_BLK2MS.txt
   where:
       <MT> = map entity type
            ‘ANVSA’ = Alaska Native Village Statistical Area
            ‘R’ = American Indian Reservation - Federally or State Recognized
            ‘HHL’ = Hawaiian Home Land
            ‘OTSA’ = Oklahoma Tribal Statistical Area
            ‘SDTSA’ = State Designated Triabl Statistical Area
            ‘TDSA’ = Tribal Designated Statistical Area
            ‘TS’ = Tribal Subdivision
       <FFFF> = 4 digit FIPS code
       <###> = map sheet number
            ‘000’ = Index sheet
            ‘001’ – ‘999’ = Parent sheets
            ‘A01’ – ‘Z99’ = Inset sheets

Example file names:
DC10BLK_ANVSA6175_000.pdf – Index map for Barrow ANVSA
DC10BLK_ANVSA6175_001.pdf – Parent sheet '1' for Barrow ANVSA
DC10BLK_ANVSA6175_A01.pdf – Inset area 'A', sheet '1' for Barrow ANVSA
DC10BLK_ANVSA6175_BLK2MS.txt – Block to Map Sheet File for Barrow ANVSA

Consolidated City

The file names for the consolidated city-based 2010 Census Block Maps and the corresponding Block to Map Sheet File are composed as follows:

DC10BLK_CC<SS><FFFFFF>_<###>.pdf
DC10BLK_CC<SS><FFFFFF>_BLK2MS.txt
   where:
       <SS> = 2 digit state FIPS code
        <FFFFFF> = 5 digit consolidated city FIPS code
        <###> = map sheet number
            ‘000’ = Index sheet
            ‘001’ – ‘999’ = Parent sheets
            ‘A01’ – ‘Z99’ = Inset sheets

Example file names:
DC10BLK_CC1836000_000.pdf – Index map for Indianapolis city, Indiana
DC10BLK_CC1836000_004.pdf – Parent sheet '04' for Indianapolis city, Indiana
DC10BLK_CC1836000_A01.pdf – Inset area 'A', sheet '1' for Indianapolis city, Indiana
DC10BLK_CC1836000_BLK2MS.txt – Block to Map Sheet File for Indianapolis city, Indiana

County or County Equivalent

The file names for the county-based 2010 Census Block Maps and the corresponding Block to Map Sheet File are composed as follows:

DC10BLK_C<SS><CCC>_<###>.pdf
DC10BLK_C<SS><CCC>_BLK2MS.txt
   where:
       <SS> = 2 digit state FIPS code
       <CCC> = 3 digit county FIPS code
       <###> = map sheet number
            ‘000’ = Index sheet
            ‘001’ – ‘999’ = Parent sheets
            ‘A01’ – ‘Z99’ = Inset sheets

Example file names:
DC10BLK_C17097_000.pdf – Index map for Lake County, Illinois
DC10BLK_C17097_018.pdf – Parent sheet '18' for Lake County, Illinois
DC10BLK_C17097_A01.pdf – Inset area 'A', sheet '1' for Lake County, Illinois
DC10BLK_C17097_BLK2MS.txt – Block to Map Sheet File for Lake County, Illinois

County Subdivision

The file names for the county subdivision-based 2010 Census Block Maps and the corresponding Block to Map Sheet File are composed as follows:

DC10BLK_CS<SS><CCC><FFFFF>_<###>.pdf
DC10BLK_CS<SS><CCC><FFFFF>_BLK2MS.txt
   where:
       <SS> = 2 digit state FIPS code
       <CCC> = 3 digit county FIPS code
       <FFFFF> = 5 digit county subdivision FIPS code
       <###> = map sheet number
            ‘000’ = Index sheet
            ‘001’ – ‘999’ = Parent sheets
            ‘A01’ – ‘Z99’ = Inset sheets

Example file names:
DC10BLK_CS0900952070_000.pdf – Index map for New Haven town, Connecticut
DC10BLK_CS0900952070_003.pdf – Parent sheet '03' for New Haven town, Connecticut
DC10BLK_CS0900952070_A01.pdf – Inset area 'A', sheet '1' for New Haven town, Connecticut
DC10BLK_CS0900952070_BLK2MS.txt – Block to Map Sheet File for New Haven town, Connecticut

Estate

The file names for the estate-based 2010 Census Block Maps and the corresponding Block to Map Sheet File are composed as follows:

DC10BLK_SCS<SS><FFFFF>_<###>.pdf
DC10BLK_SCS<SS><FFFFF>_BLK2MS.txt
   where:
       <SS> = 2 digit state FIPS code
       <FFFFF> = 5 digit Estate FIPS code
       <###> = map sheet number
            ‘001’ – ‘999’ = Parent sheets

Example file names:
DC10BLK_SCS7885660_001.pdf – Parent sheet '1' for Estate Wells Bay, VI
DC10BLK_SCS7885660_BLK2MS.txt – Block to Map Sheet File for Estate Wells Bay, VI

Place

The file names for the place-based 2010 Census Block Maps and the corresponding Block to Map Sheet File are composed as follows:

DC10BLK_P<SS><FFFFF> _<###>.pdf
DC10BLK_P<SS><FFFFF> _BLK2MS.txt
   where:
       <SS> = 2 digit state FIPS code
       <FFFFF> = 5 digit place FIPS code
       <###> = map sheet number
            ‘000’ = Index sheet
            ‘001’ – ‘999’ = Parent sheets
            ‘A01’ – ‘Z99’ = Inset sheets

Example file names:
DC10BLK_P0662000_000.pdf – Index map for Riverside city, California
DC10BLK_P0662000_004.pdf – Parent sheet '04' for Riverside city, California
DC10BLK_P0662000_A01.pdf – Inset area 'A', sheet '1' for Riverside city, California
DC10BLK_P0662000_BLK2MS.txt – Block to Map Sheet File for Riverside city, California

Subbarrio

The file names for the subbarrio-based 2010 Census Block Maps and the corresponding Block to Map Sheet File are composed as follows:

DC10BLK_SCS<SS><FFFFF>_<###>.pdf
DC10BLK_SCS<SS><FFFFF>_BLK2MS.txt
   where:
       <SS> = 2 digit state FIPS code
       <FFFFF> = 5 digit Subbarrio FIPS code
       <###> = map sheet number
            ‘000’ = Index sheet
            ‘001’ – ‘999’ = Parent sheets
            ‘A01’ – ‘Z99’ = Inset sheets

Example file names:
DC10BLK_SCS7201185_000.pdf – Index map for Aguirre (Rural) Subbarrio, Puerto Rico
DC10BLK_SCS7201185_001.pdf – Parent sheet '1' for Aguirre (Rural) Subbarrio, Puerto Rico
DC10BLK_SCS7201185_A01.pdf – Inset area 'A', sheet '1' for Aguirre (Rural) Subbarrio, Puerto Rico
DC10BLK_SCS7201185_BLK2MS.txt – Block to Map Sheet File for Aguirre (Rural) Subbarrio, Puerto Rico


Source: U.S. Census Bureau | Geography | (301) 763-1128 |  Last Revised: January 24, 2013