THE TETON COUNTY LAND BRIEF
Land in the
Foothill Grassland setting.
Teton County has 2,271.6 square miles of land in Montana. 5 mapped landscape regions meet across Teton County: Foothill Grassland, North Central Brown Glaciated Plains, Southern Carbonate Front, 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
Teton County intersects 5 mapped regional units. The largest mapped shares are:
- Foothill Grassland41.1%
- North Central Brown Glaciated Plains36.3%
- Southern Carbonate Front14.2%
- Crestal Alpine-Subalpine Zone4.8%
- Rocky Mountain Front Foothill Potholes3.6%
Canadian Rockies in Teton County
High mountain ranges extend south from Canada into northwestern Montana. Glacial terrain, conifer forests and alpine country are central features, with more ice-covered highlands than the Northern Rockies.
Read the regional source ↗Finding your parcel within Teton County
The atlas lists 9 cities, towns, townships, and Census communities associated with Teton County, including New Rockport Colony, Bynum, Power. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Teton County by land and water
The Census records 20.3 square miles of water within Teton County, or 0.9% of its total area. That share is close to Teton County’s 0.9%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Teton County has 1,561.2 times the land area of nearby Choteau city (1.46 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Cascade County, Chouteau County, Flathead County, Lewis and Clark County, Pondera County within Montana. A tract near one of these lines should be matched to the county identifier on its own records.

