BIA Regional Boundary

Description provided by the Bureau of Indian Affairs API:
BIA Regions

Tags: Region, BIA

The Bureau of Indian Affairs (BIA) provides comprehensive data about federally recognized American Indian and Alaska Native tribes and their lands, resources, and demographics.
The BIA, part of the U.S. Department of the Interior, serves as the principal link between federally recognized tribes and the U.S. government, managing trust responsibilities for approximately 574 federally recognized tribes.