Cartographic Products Management Branch 20000101 vector digital data http://www.census.gov/geo/www/cob/ts2000.html American Indian tribal subdivisions are administrative subdivisions of federally recognized American Indian reservations, off-reservation trust lands, or Oklahoma tribal statistical areas (OTSAs), known as areas, chapters, communities, or districts. These entities are internal units of self-government or administration that serve social, cultural, and/or economic purposes for the American Indians on the reservations, off-reservation trust lands, or OTSAs. The U.S. Census Bureau obtains the boundary and name information for tribal subdivisions from tribal governments. The Census Bureau first provided data for American Indian tribal subdivisions in the 1980 census when it identified them as "American Indian subreservation areas." It did not provide data for these entities in conjunction with the 1990 census. Each American Indian tribal subdivision is assigned a three-digit census code that is alphabetically in order and unique within each reservation, associated off-reservation trust land, and OTSA. Each tribal subdivision also is assigned a five-digit Federal Information Processing Standards (FIPS) code. FIPS codes are assigned alphabetically within state; the FIPS codes are different in each state for tribal subdivisions that extend into more than one state. The cartographic boundary files are a generalized extract from the U.S. Census Bureau's TIGER database. Line simplification/smoothing was performed with a tolerance of 0.005 decimal degrees and a coordinate reduction using the Douglas-Peucker method with a tolerance of 0.0003 decimal degrees. Very small polygons were eliminated when the combination of geographic codes existed elsewhere. The geography was clipped back to the shoreline of the United States, in contrast to TIGER/LineŽ which shows the full extent of geography out to the 3-mile limit. These generalized cartographic boundary files are originally produced to support the spatial geographic infrastructure for certain mapping functions within the Census Bureau's American Fact Finder and in support of the LandView Geographic Data Viewer. The generalized files have a much smaller file size than the original file extraction from the Census Bureau's TIGER database, resulting in faster download and processing times. 20000101 publication date Complete As needed 172.46087000 -65.22152710 71.34294128 17.88511467 ISO 19115 Topic Categories boundaries None Cartographic Boundary generalized government boundaries statistical American Indian Statistical Area American Indian Tribal Subdivision FGDC Framework Themes FWGOVERNMENTALUNITS None United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware DC Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming None The boundaries in this file are for statistical purposes only. They do not represent legal boundaries. U.S. Census Bureau, Geography Division, Geographic Products Management Branch mailing

4700 Silver Hill Road, Stop 7400

Washington DC 20233-7400 US physical

8903 Presidential Parkway, Room 520 WP1

Upper Marlboro Maryland 20772 US 301-763-1128 301-457-4710 tiger@census.gov 7am - 5pm EST http://www.census.gov/geo/www/maps/CP_Contact.htm 20030514 U.S. Census Bureau, Geography Division, Cartographic Products Management Branch Cartographic Products Management Branch Metadata Coordinator mailing

4700 Silver Hill Road, Stop 7400

Washington DC 20233-7400 US physical

8903 Presidential Parkway, Room 301 WP1

Upper Marlboro Maryland 20772 US 301-763-1101 301-457-4710 zachariah.meade.turner.iii@census.gov 7am - 5pm EST http://www.census.gov/geo/www/maps/CP_Contact.htm FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998