Stillwater County, Montana

Stillwater County, Montana
Beartooth Mountains from Park City
Location within the U.S. state of Montana
Coordinates: 45°40′N 109°23′W / 45.67°N 109.39°W / 45.67; -109.39
Country United States
State Montana
Founded1913
Named afterStillwater River
SeatColumbus
Largest townColumbus
Area
 • Total
1,805 sq mi (4,670 km2)
 • Land1,795 sq mi (4,650 km2)
 • Water9.2 sq mi (24 km2)  0.5%
Population
 (2020)
 • Total
8,963
 • Estimate 
(2024)
9,450
 • Density4.993/sq mi (1.928/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitewww.stillwater.mt.gov
  • Montana county number 32

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.