Fort Peck Assiniboine and Sioux Tribes
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Lands
Fort Peck Reservation, northeastern Montana, United States; headquarters in Poplar
Countries United States
Facts 3
Governance
Members of the Fort Peck Tribal Executive Board, except the secretary-accountant, are elected at-large every two years.
As of 2026 Source: Montana Governor's Office of Indian Affairs, Fort Peck Assiniboine and Sioux Tribes (opens in a new tab) Checked Suggest a correction to this fact
Land
The Fort Peck Reservation in northeastern Montana includes more than two million acres of land.
As of 2026 Source: Montana Governor's Office of Indian Affairs, Fort Peck Assiniboine and Sioux Tribes (opens in a new tab) Checked Suggest a correction to this fact
Culture
The Fort Peck Reservation is home to two separate nations: the Assiniboine, who call themselves Nakona, and the Sioux, who call themselves Dakota.
Source: Montana Governor's Office of Indian Affairs, Fort Peck Assiniboine and Sioux Tribes (opens in a new tab) Checked Suggest a correction to this fact
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