Big Stone County, Minnesota

Big Stone County
Big Stone County Courthouse in Ortonville, Minnesota.
Location within the U.S. state of Minnesota
Minnesota's location within the U.S.
Coordinates: 45°26′N 96°25′W / 45.43°N 96.41°W / 45.43; -96.41
Country United States
State Minnesota
FoundedFebruary 20, 1862 (created)
1874 (organized)
Named afterBig Stone Lake
SeatOrtonville
Largest cityOrtonville
Area
  Total
528 sq mi (1,370 km2)
  Land499 sq mi (1,290 km2)
  Water29 sq mi (80 km2)  5.5%
Population
 (2020)
  Total
5,166
  Estimate 
(2023)
5,105
  Density10.1/sq mi (3.9/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district7th
Websitebigstonecounty.gov

Big Stone County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 5,166. Its county seat is Ortonville.