cb_2024_06_bg_500k.shp.iso.xml eng; USA utf8 dataset U.S. Department of Commerce, U.S. Census Bureau, Geography Division 301-763-1128 301-763-4710 4600 Silver Hill Road, Stop 7400 Washington DC 20233-7400 United States geo.geography@census.gov pointOfContact 2025-05 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://meta.geo.census.gov/data/existing/decennial/GEO/CPMB/boundary/2024/19115/shp/cb_2024_06_bg_500k.shp.iso.xml complex 25586 North American Datum of 1983 NAD83 2007-01-19 revision https://spatialreference.org/ref/epsg/4269/gml/ NAD83 Link to Geographic Markup Language (GML) description of reference system. information resourceProvider urn:ogc:def:crs:EPSG::4269 2024 Cartographic Boundary File (SHP), Block Group for California, 1:500,000 2025-05 publication 2025-05 creation 2025-05 lastUpdate cb_2024_06_bg_500k U.S. Department of Commerce, U.S. Census Bureau, Geography Division 301-763-1128 301-763-4710 4600 Silver Hill Road, Stop 7400 Washington DC 20233-7400 United States geo.geography@census.gov pointOfContact mapDigital The 2024 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 2020 Census. These files were specifically created to support small-scale thematic mapping. To improve the appearance of shapes at small scales, areas are represented with fewer vertices than detailed TIGER/Line Shapefiles. Cartographic boundary files take up less disk space than their ungeneralized counterparts. Cartographic boundary files take less time to render on screen than TIGER/Line Shapefiles. You can join this file with table data downloaded from American FactFinder by using the AFFGEOID field in the cartographic boundary file. If detailed boundaries are required, please use the TIGER/Line Shapefiles instead of the generalized cartographic boundary files. completed U.S. Department of Commerce, U.S. Census Bureau, Geography Division 301-763-1128 301-763-4710 4600 Silver Hill Road, Stop 7400 Washington DC 20233-7400 United States geo.geography@census.gov pointOfContact notPlanned 2024 SHP Block Group Cartographic Boundary Census Tract County Generalized None California CA INCITS 38-2009[R2019]: Information Technology - Codes for the Identification of the States and Equivalent Areas within the United States, Puerto Rico, and the Insular Areas otherRestrictions otherRestrictions Access constraints: None Use Constraints: The intended display scale for this file is 1:500,000. This file should not be displayed at scales larger than 1:500,000. These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The boundary information is for visual display at appropriate small scales only. Cartographic boundary files should not be used for geographic analysis including area or perimeter calculation. Files should not be used for geocoding addresses. Files should not be used for determining precise geographic area relationships. vector eng; USA utf8 boundaries The cartographic boundary files contain geographic data only and do not include display mapping software or statistical data. For information on how to use cartographic boundary file data with specific software package users shall contact the company that produced the software. -124.409591 -114.131211 32.534435 42.009485 publication date 2025-05 1 Block Groups Feature Catalog for the 2024 Block Group for California Cartographic Boundary File 2024 publication U.S. Department of Commerce, U.S. Census Bureau, Geography Division 301-763-1128 301-763-4710 4600 Silver Hill Road, Stop 7400 Washington DC 20233-7400 United States geo.geography@census.gov pointOfContact https://meta.geo.census.gov/data/existing/decennial/GEO/CPMB/boundary/2024/19110/shp/cb_2024_06_bg_500k.shp.ea.iso.xml ZIP U.S. Department of Commerce, U.S. Census Bureau, Geography Division 301-763-1128 301-763-4710 4600 Silver Hill Road, Stop 7400 Washington DC 20233-7400 United States geo.geography@census.gov distributor The online cartographic boundary files may be downloaded without charge. https://www2.census.gov/geo/tiger/GENZ2024/shp/cb_2024_06_bg_500k.zip Shapefile Zip File cb_2024_06_bg_500k.zip The cartographic boundary files are simplified representations of selected geographic areas specifically designed for small scale thematic mapping. These files contain simplified extracts of selected geographic areas from the U.S. Census Bureau's Master Address File/Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) database. download https://meta.geo.census.gov/data/existing/decennial/GEO/CPMB/boundary/2024/19110/shp/cb_2024_06_bg_500k.shp.ea.iso.xml XML cb_2024_06_bg_500k.shp.ea.iso.xml Entity and attribute file download https://www2.census.gov/geo/tiger/GENZ2024/2024_file_name_def.pdf PDF 2024_file_name_def.pdf The file naming convention for the cartographic boundary files. search https://www2.census.gov/geo/tiger/GENZ2024/description.pdf PDF description.pdf General description of the cartographic boundary files and their appropriate use. search dataset The Census Bureau performed automated tests to ensure logical consistency and limits of shapefiles. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. All polygons are tested for closure. The Census Bureau uses its internally developed geographic update system to enhance and modify spatial and attribute data in the Census MAF/TIGER database. Standard geographic codes, such as FIPS codes for states, counties, municipalities, county subdivisions, places, American Indian/Alaska Native/Native Hawaiian areas, and congressional districts are used when encoding spatial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation of the original Census MAF/TIGER database files. Most of the codes for geographic entities except states, counties, urban areas, Core Based Statistical Areas (CBSAs), American Indian Areas (AIAs), and congressional districts were provided to the Census Bureau by the USGS, the agency responsible for maintaining the Geographic Names Information System (GNIS). Feature attribute information has been examined but has not been fully tested for consistency. For the Cartographic Boundary Files, the Point and Vector Object Count for the G-polygon SDTS Point and Vector Object Type reflects the number of records in the shapefile attribute table. For multi-polygon features, only one attribute record exists for each multi-polygon rather than one attribute record per individual G-polygon component of the multi-polygon feature. Cartographic Boundary File multi-polygons are an exception to the G-polygon object type classification. Therefore, when multi-polygons exist in a shapefile, the object count will be less than the actual number of G-polygons. The cartographic boundary files are generalized representations of extracts taken from the MAF/TIGER database. Generalized boundary files are clipped to a simplified version of the U.S. outline. As a result, some off-shore areas may be excluded from the generalized files. Some small geographic areas, holes, or discontiguous parts of areas may not be included in generalized files if they are not visible at the target scale. The cartographic boundary files are generalized representations of extracts taken from the MAF/TIGER database. Generalized boundary files are clipped to a simplified version of the U.S. outline. As a result, some off-shore areas may be excluded from the generalized files. Some small geographic areas, holes, or discontiguous parts of areas may not be included in generalized files if they are not visible at the target scale. notPlanned This was transformed from the Census Bureau Geospatial Product Metadata Content Standard.