THE CHOUTEAU COUNTY LAND BRIEF
Land in the
North Central Brown Glaciated Plains setting.
Chouteau County has 3,972.5 square miles of land in Montana. 7 mapped landscape regions meet across Chouteau County: North Central Brown Glaciated Plains, Missouri Breaks Woodland-Scrubland, Foothill Grassland, among others.
Glaciated plains bridge the wetter eastern prairie and the drier, more broken Great Plains. Numerous prairie potholes and other seasonal or persistent wetlands are characteristic regional landforms.
Regional context: Northwestern Glaciated Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Chouteau County intersects 7 mapped regional units. The largest mapped shares are:
- North Central Brown Glaciated Plains75.9%
- Missouri Breaks Woodland-Scrubland8%
- Foothill Grassland7.5%
- Scattered Eastern Igneous-Core Mountains3.8%
- Glaciated Northern Grasslands3.3%
Northwestern Great Plains in Chouteau County
Rolling semiarid plains are punctuated by buttes, badlands and river breaks. Much of the regional terrain developed on sandstone, siltstone and shale without the leveling influence of continental glaciers.
Read the regional source ↗Middle Rockies in Chouteau County
Forested mountain ranges rise above grassy or shrubby intermountain valleys. The Middle Rockies combine alpine high country, partly wooded foothills and valleys supplied by mountain streams.
Read the regional source ↗Finding your parcel within Chouteau County
The atlas lists 13 cities, towns, townships, and Census communities associated with Chouteau County, including Parker School, Rocky Boy West, Highwood. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Chouteau County by land and water
The Census records 24.2 square miles of water within Chouteau County, or 0.6% of its total area. That share is close to Chouteau County’s 0.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Chouteau County has 1,153.5 times the land area of nearby Loma CDP (3.44 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Blaine County, Cascade County, Fergus County, Hill County, Judith Basin County, Liberty County, Pondera County, Teton County within Montana. A tract near one of these lines should be matched to the county identifier on its own records.

