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These tables show the relationships between census tracts and other geographies.
The 2010 census tract to American Indian area relationship file is provided as a tool for data users interested in understanding which census tracts contain an American Indian area. American Indian areas include Federally recognized Reservations and trust lands, State recognized Reservations, State designated tribal statistical areas (SDTSAs), tribal designated statistical areas (TDSAs), Oklahoma tribal statistical areas (OTSAs), Hawaiian Homelands (HHLs), and Alaska Native village statistical areas (ANVSAs). Census tracts do not necessarily nest within American Indian areas, so the list includes all census tracts that contain any amount of American Indian area. The total area, 2010 population count, and 2010 housing unit count of the intersection between the census tract and American Indian area are provided, as well as the percentage of the census tract covered. The list does not contain all 2010 census tracts. It only contains the census tracts that intersect with an American Indian area. American Indian areas are updated occasionally; however, we do not have plans to create an updated relationship file at this time. The list is accurate as of January 1, 2010.
The tracts represented in the relationship are the standard county-based census tracts. The Census Bureau also offers data by tribal census tract which is an additional layer that nests within Federally recognized Reservations and trust lands. For more information on American Indian areas, please visit our Geographic Terms and Concepts page.
The 2010 census tract to military area relationship file is provided as a tool for data users interested in understanding which census tracts contain a military base or outlying area. Census tracts do not necessarily nest within military areas, so the list includes all census tracts that contain any amount of military area. The total area of the intersection between the census tract and military area is provided, as well as the percentage of the census tract covered. The list does not contain all 2010 census tracts. It only contains the census tracts that intersect with a military area. Military areas are updated occasionally; however, we do not have plans to create an updated relationship file at this time. The list is accurate as of October 2012.
The 2010 Census tract to 2010 PUMA relationship file is provided as a tool for data users to identify which census tracts are contained within a PUMA. For the 2010 Census, tracts nest within PUMAs. This file includes all 2010 Census tracts and 2010 PUMAs. The list is accurate as of April 6, 2012.