thumb|Mouat [[chromite mine and mill, 1942]]
Stillwater County is a county in the U.S. state of Montana. As of the 2020 census, the population was 8,963. Its county seat is Columbus.
Geography
According to the United States Census Bureau, the county has a total area of , of which is land and (0.5%) is water.
Major highways
- 20px Interstate 90
- 20px U.S. Highway 10 (Former)
- 20px Montana Highway 78
Adjacent counties
- Golden Valley County – north
- Yellowstone County – east
- Carbon County – south
- Park County – southwest
- Sweet Grass County – west
National protected areas
- Custer National Forest (part)
- Grass Lake National Wildlife Refuge
- Hailstone National Wildlife Refuge
Demographics
<!-- PresRow should be -->
Communities
Town
- Columbus (county seat)
Census-designated places
- Absarokee
- Fishtail
- Nye
- Park City
- Rapelje
- Reed Point
Unincorporated communities
- Beehive
- Dean
- Meyers Creek (partial)
- Molt
- Reed Point
Ghost towns
- Limestone
- Springtime
- Wheat Basin
See also
- List of lakes in Stillwater County, Montana
- List of mountains in Stillwater County, Montana
- National Register of Historic Places listings in Stillwater County, Montana