Datasets > Polygon data > Wisconsin > 2015-2019

Census Block Groups (500K Carto Boundary File) [Wisconsin] {2019}

U.S. Census Bureau · 2019 Full Details

Full Details

Title
Census Block Groups (500K Carto Boundary File) [Wisconsin] {2019}
Description
This data represents Block Groups from the U.S. Census Bureau for Wisconsin in 2019. [The 2019 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. Block Groups (BGs) are clusters of blocks within the same census tract. Each census tract contains at least one BG, and BGs are uniquely numbered within census tracts. BGs have a valid code range of 0 through 9. BGs have the same first digit of their 4-digit census block number from the same decennial census. For example, tabulation blocks numbered 3001, 3002, 3003,.., 3999 within census tract 1210.02 are also within BG 3 within that census tract. BGs coded 0 are intended to only include water area, no land area, and they are generally in territorial seas, coastal water, and Great Lakes water areas. Block groups generally contain between 600 and 3,000 people. A BG usually covers a contiguous area but never crosses county or census tract boundaries. They may, however, cross the boundaries of other geographic entities like county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian / Alaska Native / Native Hawaiian areas. The generalized BG boundaries in this release are based on those that were delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2010 Census.], This is an archived copy of the data held at UW-Madison.
Creator
U.S. Census Bureau
Temporal Coverage
2019
Access Rights
Public
Format
Shapefile
Language
English
Date Added
January 07, 2022

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Cite and Reference

  • Citation
    U.S. Census Bureau (n.d.). Census Block Groups (500K Carto Boundary File) [Wisconsin] {2019}. . https://www.census.gov/geographies/mapping-files.html (dataset)
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