Winneshiek County, Iowa

Winneshiek County, Iowa
The Courthouse and Civil War Monument located in Decorah
Location within the U.S. state of Iowa
Coordinates: 43°17′00″N 91°52′00″W / 43.283333333333°N 91.866666666667°W / 43.283333333333; -91.866666666667
Country United States
State Iowa
Founded1847
Named afterChief Winneshiek
SeatDecorah
Largest cityDecorah
Area
 • Total
690 sq mi (1,800 km2)
 • Land690 sq mi (1,800 km2)
 • Water0.3 sq mi (0.78 km2)  0.04%
Population
 (2020)
 • Total
20,070
 • Estimate 
(2024)
19,723
 • Density29/sq mi (11/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district1st
Websitewinneshiekcounty.iowa.gov
  • Iowa county number 96

Winneshiek County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 20,070. The county seat is Decorah.