The Fort Peck Reservation is home to two separate American Indian nations, each composed of numerous bands and divisions.
The
Sioux divisions
of Sisseton, Wahpetons,
the Yanktonais, and the Teton Hunkpapa are all represented.
The Assiniboine bands of Canoe Paddler and Red Bottom are represented.
The Reservation
is located in the extreme northeast corner of Montana, on the north
side of the Missouri
River.



The Tribal Executive Board (TEB), comprised of fifteen enrolled members of the Fort Peck Tribes, is the governing body of the reservation. The TEB is comprised of a Chairman, Vice-Chairman, Sergeant-at-Arms, and twelve voting members. All members of the governing body are elected at large every two years.
The Fort Peck Reservation homelands are located in the northeast corner of Montana. There are an estimated 11,786 enrolled tribal members, of whom approximately 6,000 reside on or near the Reservation.