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Download URL (SHP): https://opendata.arcgis.com/api/v3/datasets/53c703338f6a429a877c43147c95a503_0/downloads/data?format=shp&spatialRefId=4326
Download URL (GDB): https://www2.census.gov/geo/tiger/TGRGDB24/tlgdb_2024_a_us_substategeo.gdb.zip
Download URL (CSV): https://opendata.arcgis.com/datasets/53c703338f6a429a877c43147c95a503_0.csv
Download URL (XLSX): https://opendata.arcgis.com/datasets/53c703338f6a429a877c43147c95a503_0.xlsx

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Text Summary from About Page:
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Census Block Groups | HIFLD
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Census Block Groups
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Census Block Groups
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Summary
Block Groups; January 1, 2024 vintage
Block Groups (BGs) are statistical divisions of census tracts, are generally defined to contain between 600 and 3,000 people, and are used to present sample data and control block numbering. A block group consists of clusters of blocks within the same census tract that have the same first digit of their four-digit census block number. For example, blocks 3001, 3002, 3003 . . . 3999 in census tract 1210.02 belong to BG 3 in that census tract. Block groups generally contain between 600 and 3,000 people. Most BGs were delineated by local participants in the Census Bureau's Participant Statistical Areas Program. The Census Bureau delineated BGs only where a local or tribal government declined to participate and a regional organization or State Data Center was not available to participate.
A BG usually covers a contiguous area. Each census tract contains at least one BG and BGs are uniquely numbered within census tract. Within the standard census geographic hierarchy, BGs never cross county or census tract boundaries but may cross the boundaries of areas any other geographic entity. Tribal census tracts and tribal BGs are separate and unique geographic areas defined within federally recognized American Indian reservations and can cross state and county boundaries. The tribal census tracts and tribal block groups may be completely different from the census tracts and block groups defined by state and county.
Download:
https://www2.census.gov/geo/tiger/TGRGDB24/tlgdb_2024_a_us_substategeo.gdb.zip
Layer:
Block_Group
Metadata:
https://meta.geo.census.gov/data/existing/decennial/GEO/GPMB/TIGERline/Current_19115/series_tl_2023_bg.shp.iso.xml
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Dataset
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April 8, 2025 at 3:54:40 PM EDT
Info Updated
April 8, 2025 at 7:54:40 PM EDT
Data Updated
August 28, 2024 at 2:32:29 PM EDT
Published Date
Records: 242,748
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HIFLD
Boundaries
Tracts
Blocks
Block Group
Census 2020
National Geospatial Data Asset
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Feature Service
SDI
NSDI
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