Lafayette County, Wisconsin

Lafayette County
Location within the U.S. state of Wisconsin
Wisconsin's location within the U.S.
Coordinates: 42°40′N 90°08′W / 42.66°N 90.14°W / 42.66; -90.14
Country United States
State Wisconsin
Founded1846
Named afterMarquis de Lafayette
SeatDarlington
Largest cityDarlington
Area
  Total
635 sq mi (1,640 km2)
  Land634 sq mi (1,640 km2)
  Water1.0 sq mi (3 km2)  0.2%
Population
 (2020)
  Total
16,611
  Estimate 
(2024)
17,306
  Density27.3/sq mi (10.5/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websitewww.co.lafayette.wi.gov

Lafayette County, sometimes spelled La Fayette County, is a county located in the U.S. state of Wisconsin. It was part of the Wisconsin Territory at the time of its founding. As of the 2020 census, the population was 16,611. Its county seat is Darlington. The county was named in honor of the Marquis de Lafayette, the French general who rendered assistance to the Continental Army in the American Revolutionary War. The county is considered a high-farming concentration county by the U.S. Department of Agriculture, meaning at least 20 percent of its earnings came from agriculture.

The courthouse scenes from the 2009 film Public Enemies were filmed at the Lafayette County Courthouse in Darlington.