Fergus County, Montana

Fergus County
Fergus County Courthouse in Lewistown
Location within the U.S. state of Montana
Montana's location within the U.S.
Coordinates: 47°16′N 109°13′W / 47.26°N 109.22°W / 47.26; -109.22
Country United States
State Montana
Founded1885
Named afterJames Fergus
SeatLewistown
Largest cityLewistown
Area
  Total
4,350 sq mi (11,300 km2)
  Land4,340 sq mi (11,200 km2)
  Water11 sq mi (30 km2)  0.2%
Population
 (2020)
  Total
11,446
  Estimate 
(2024)
11,862
  Density2.6/sq mi (1.0/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitefergusmt.gov
  • Montana county number 08

Fergus County is a county in the U.S. state of Montana. As of the 2020 census, the population was 11,446. Its county seat is Lewistown. The county was founded in 1885 and named for James Fergus, a Montana politician who was instrumental in creating the county.