Fort Peck Indian Reservation

Fort Peck Indian Reservation
Fort Peck Reservation sign on Highway 13
Missouri River below Fort Peck Dam
Location in Montana
Coordinates: 48°21′40″N 105°32′18″W / 48.36111°N 105.53833°W / 48.36111; -105.53833
TribeFort Peck Assiniboine and Sioux
CountryUnited States
StateMontana
CountiesDaniels
Roosevelt
Sheridan
Valley
Established1878
HeadquartersPoplar
Government
 • BodyFort Peck Tribal Executive Board
 • ChairmanJustin GrayHawk Sr
 • Vice-ChairmanCharles Headdress
Area
 • Total
3,200 sq mi (8,300 km2)
Dimensions
 • Length110 mi (180 km)
 • Width40 mi (64 km)
Population
 (2017)
 • Total
10,374
 • Density3.2/sq mi (1.3/km2)
Time zoneUTC-7 (MST)
 • Summer (DST)UTC-6 (MDT)
Area code406
GDP$385.9 Million (2018)
Websitefortpecktribes.org

The Fort Peck Indian Reservation (Assiniboine: húdam wįcášta, Dakota: Waxchį́ca oyáte) is located near Fort Peck, Montana, in the northeast part of the state. It is the home of several federally recognized bands of Assiniboine, Lakota, and Dakota peoples of Native Americans.

With a total land area of 2,094,000 acres (8,470 km2; 3,272 sq mi), it is the ninth-largest Indian reservation in the United States. These lands are spread across parts of four counties. In descending order of land area they are Roosevelt, Valley, Daniels, and Sheridan counties. Its resident population was 10,381 in 2000. The largest community on the reservation is the city of Wolf Point.