Big Stone County, Minnesota

Big Stone County, Minnesota
Big Stone County Courthouse in Ortonville, Minnesota.
Location within the U.S. state of Minnesota
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 (75 km2)  5.5%
Population
 (2020)
 • Total
5,166
 • Estimate 
(2024)
5,067
 • 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.