THE SWEET GRASS COUNTY LAND BRIEF
Land in the
Unglaciated Montana High Plains setting.
Sweet Grass County has 1,855.5 square miles of land in Montana. 8 mapped landscape regions meet across Sweet Grass County: Unglaciated Montana High Plains, Non-calcareous Foothill Grassland, Gneissic-Schistose Forested Mountains, among others.
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.
Regional context: Northwestern Great Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Sweet Grass County intersects 8 mapped regional units. The largest mapped shares are:
- Unglaciated Montana High Plains38.3%
- Non-calcareous Foothill Grassland27.1%
- Gneissic-Schistose Forested Mountains8.5%
- Absaroka-Gallatin Volcanic Mountains7.1%
- Pine Scoria Hills6.7%
Middle Rockies in Sweet Grass 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 Sweet Grass County
The atlas lists 2 cities, towns, townships, and Census communities associated with Sweet Grass County, including Big Timber, Greycliff. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Sweet Grass County by land and water
The Census records 6.74 square miles of water within Sweet Grass County, or 0.4% of its total area. That share is close to Sweet Grass County’s 0.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sweet Grass County has 1,899.2 times the land area of nearby Big Timber city (0.98 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Golden Valley County, Meagher County, Park County, Stillwater County, Wheatland County within Montana. A tract near one of these lines should be matched to the county identifier on its own records.

