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    • 2020 Cartographic Boundary File (KML), American Indian Tribal Subdivision (AITS) for United States, 1:500,000

    Metadata Updated: December 14, 2023

    The 2020 cartographic boundary KMLs 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.

    American Indian tribal subdivisions are administrative subdivisions of federally recognized American Indian reservations/off-reservation trust lands or Oklahoma tribal statistical areas (OTSAs). These entities are internal units of self-government and/or administration that serve social, cultural, and/or economic purposes for the American Indian tribe or tribes on the reservations/off-reservation trust lands or OTSAs. The Census Bureau obtains the boundary and attribute information for tribal subdivisions on federally recognized American Indian reservations and off-reservation trust lands from federally recognized tribal governments through the Census Bureau's Boundary and Annexation Survey (BAS). For the 2020 Census, the boundaries for tribal subdivisions on OTSAs were also obtained from federally recognized tribal governments through the Participant Statistical Areas Program (PSAP). Note that tribal subdivisions do not exist on all reservations/off-reservation trust lands or OTSAs, rather only where they were submitted to the Census Bureau by the federally recognized tribal government for that area.

    The generalized American Indian tribal subdivision boundaries in this file are based on those as of January 1, 2020, as reported by the federally recognized tribal governments through the Census Bureau's Boundary and Annexation Survey (BAS).

    The generalized boundaries for tribal subdivisions on OTSAs in this file are based on those reported as of January 1, 2020 through PSAP.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date 2023-05
    Metadata Created Date June 2, 2023
    Metadata Updated Date December 14, 2023
    Reference Date(s) 2023-05 (publication), 2023-05 (creation), 2023-05 (lastUpdate)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from Cartographic Boundary Files - 2020

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2023-05
    Metadata Created Date June 2, 2023
    Metadata Updated Date December 14, 2023
    Reference Date(s) 2023-05 (publication), 2023-05 (creation), 2023-05 (lastUpdate)
    Responsible Party U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Customer Engagement Branch (Point of Contact)
    Contact Email
    Guid cb_2020_us_aitsn_500k.kml.iso.xml
    Access Constraints 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.
    Bbox East Long 179.77847
    Bbox North Lat 71.365162
    Bbox South Lat -14.548699
    Bbox West Long -179.148909
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id 37c465c6-edcd-492a-ae14-9fe584144b73
    Harvest Source Id 28012753-516e-46f6-b1e2-819875e754f9
    Harvest Source Title Cartographic Boundary Files - 2020
    Licence
    Lineage
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-179.148909, -14.548699], [179.77847, -14.548699], [179.77847, 71.365162], [-179.148909, 71.365162], [-179.148909, -14.548699]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG::3395
    Spatial Harvester True

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