Tribes
- Montana Blackfeet
- South Dakota Cheyenne River
- Montana & Wyoming Chippewa Cree
- Confederated Salish & Kootenai
- Crow
- Crow Creek
- Eastern Shoshone
- Flandreau
- Ft. Belknap
- Ft. Berthold
- Ft. Peck
- Goshute
- Lake Traverse
- Little Shell (Not Federally Recognized)
- Lower Brule
- Navajo
- Northern Arapaho
- Northern Cheyenne
- Northwestern Shoshone
- Oglala
- Pauite
- Rosebud
- Skull Valley Goshute
- Spirit Lake
- Southern Ute
- Standing Rock
- Trenton Indian Service Area (Not Federally Recognized)
- Turtle Mountain
- Uintah & Ouray
- Ute Mountain Ute