Series Information for the 2019 Cartographic Boundary File, Current Block Group , 1:500,000

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. The 2019 block group cartographic files are avialiable at the following scales: 1:5,000,000, 1:2,0000,000 and 1:500,000.

Data e Risorse

Campo Valore
access_constraints ["\n Use Constraints:The intended display scale for these files is listed in each file's metadata. This file should not be displayed at scales larger than\n listed.\n \n These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as\n the source. The boundary information is for visual display at appropriate small scales only. Cartographic boundary files\n should not be used for geographic analysis including area or perimeter calculation. Files should not be used for geocoding\n addresses. Files should not be used for determining precise geographic area relationships.\n "]
bbox-east-long -84.88908
bbox-north-lat 35.008028
bbox-south-lat 30.223334
bbox-west-long -88.473227
collection_metadata true
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "20200521"}]
frequency-of-update notPlanned
guid SeriesInfo2019BG.shp.iso.xml
licence []
metadata-date 20200609
metadata-language eng
metadata_type geospatial
resource-type series
spatial {"type": "Polygon", "coordinates": [[[-88.473227, 30.223334], [-84.88908, 30.223334], [-84.88908, 35.008028], [-88.473227, 35.008028], [-88.473227, 30.223334]]]}
spatial_harvester true
temporal-extent-begin 201603
temporal-extent-end 201603
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • 2019
  • amerigeo
  • amerigeoss
  • block-group
  • cartographic-boundary
  • census-tract
  • ckan
  • county
  • generalized
  • geo
  • geoss
  • national
  • north-america
  • shp
  • united-sates
  • united-states
  • us
isopen False
metadata_created 2025-11-22T00:27:59.155001
metadata_modified 2025-11-22T00:27:59.155005
notes 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. The 2019 block group cartographic files are avialiable at the following scales: 1:5,000,000, 1:2,0000,000 and 1:500,000.
num_resources 2
num_tags 17
title Series Information for the 2019 Cartographic Boundary File, Current Block Group , 1:500,000