Pierre Cadet Chouteau (1789–1865), founder of posts in Upper Missouri River, including Fort Pierre, South Dakota; and in Chouteau County, Montana
In 1847 Pierre and his brother Auguste established Fort Benton in present-day Chouteau County, Montana as the last fur trading post on the Upper Missouri River.
Individuals living, working, or attending school in the following Montana counties are eligible for Russell county FCU membership: Cascade County, Montana, Teton County, Montana, Chouteau County, Montana.
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LaBarge Rock in Chouteau County, Montana (occasionally referred to as La Barge Rock) is a dramatic landform in the shape of a large rock column or pillar, rising 150 feet from waters' edge of the Missouri River.