Big Horn County, Wyoming

Big Horn County, Wyoming
Big Horn County Courthouse
Location within the U.S. state of Wyoming
Coordinates: 44°32′N 107°59′W / 44.53°N 107.99°W / 44.53; -107.99
Country United States
State Wyoming
FoundedMarch 12, 1890 (authorized)
1897 (organized)
Named afterBighorn Mountains
SeatBasin
Largest townLovell
Area
 • Total
3,159 sq mi (8,180 km2)
 • Land3,137 sq mi (8,120 km2)
 • Water22 sq mi (57 km2)  0.7%
Population
 (2020)
 • Total
11,521
 • Estimate 
(2024)
12,084
 • Density3.673/sq mi (1.418/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional districtAt-large
Websitewww.bighorncountywy.gov

Big Horn County is a county in the U.S. state of Wyoming. As of the 2020 United States census, the population was 11,521. The county seat is Basin. Its north boundary abuts the south boundary of Montana.