Fort Peck Indian Reservation

The Fort Peck Indian Reservation is near Fort Peck, Montana. It is the homeland of the Assiniboine and Sioux tribes of Native Americans. It is the ninth-largest Indian reservation in the United States and comprises parts of four counties. In descending order of land area they are Roosevelt, Valley, Daniels, and Sheridan counties. The total land area is 2,094,000 acres (8,474.117 km²), and a population of 10,381 in 2000. The largest community on the reservation is the city of Wolf Point.