Winneshiek County , Iowa

Winneshiek County: County in Iowa, United States

Winneshiek County locator map
Location of Winneshiek County on Iowa map.


Winneshiek County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 21,056 and a population density of 31 people per km². After 10 years in 2020 county had an estimated population of 19,862 inhabitants. Its county seat is Decorah. The county was created 174 years ago in 1846.

WinneshiekCourthouse image
WinneshiekCourthouse image


Winneshiek County is located at 43°17'26"N 91°50'37"W (43.2906700, -91.8437100). It has 5 neighbors: Iowa County, Allamakee County, Chickasaw County, Howard County and Houston County.

Winneshiek County map

The largest city of Winneshiek County is Ossian with a population of 769. Other cities include, Spillville population 341, Fort Atkinson population 320, Ridgeway population 285 and Castalia population 156. See all Winneshiek County cities & populated places.


Winneshiek County forecast: Sunny, with a high near 71. Southwest wind 3 to 9 mph. more

Winneshiek County Quick Facts

Population : 19,862 (2020)
Country : United States of America
State : Iowa (United States)
Area : 690 km2
Water as percent of area : 0.04%
Land as percent of area : 99.96%
Altitude : 1,119 feet / 341 meters
Capital : Decorah
Establishment : January 01, 1847
Time Zone : America/Chicago
Local time : 17:46:11 (26th September 2021)
Density : 29 Pop. per km² as of 2020
Population growth : -6.01% (2010-2020)
Weather : 71℉ Sunny 7-days weather

Winneshiek County has 5 neighbours.

  • Decorah


According to census records, the population of Winneshiek County decreased by 6.01% in 10 years.

Year Population % Change Method
2010 21,056 - census
2011 21,051 -0.02% estimation process
2012 21,041 -0.05% estimation process
2013 20,840 -0.96% estimation process
2014 20,696 -0.7% estimation process
2015 20,745 0.24% estimation process
2016 20,427 -1.56% estimation process
2017 20,129 -1.48% estimation process
2018 20,017 -0.56% estimation process
2019 19,991 -0.13% estimation process
2020 19,862 -0.65% estimation process

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People born in Winneshiek County (5)

People born in Winneshiek County, including politician Ole J. Kvale, Minnesota State Legislator Andrew C. Olson, politician Walter Langland, you can see a list of people who born in Winneshiek County.

Other places with the same name (1)

Winneshiek County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Winneshiek County.

City Name Population Title
Decorah 7,484 Town in Iowa
Calmar 934 Township in Winneshiek County, Iowa
Ossian 769 City in Iowa
Spillville 341 Human settlement in Winneshiek County, Iowa, United States of America
Fort Atkinson 320 City in Winneshiek County, Iowa, United States
Ridgeway 285 American city in Iowa
Castalia 156 City in Winneshiek County, Iowa, United States
Jackson Junction 54 Human settlement in Winneshiek County, Iowa, United States of America

Iowa Other Counties (more counties)

County Name Population Title
Polk County 494,281 County in Iowa, United States
Linn County 227,854 County in Oregon, United States
Des Moines 212,312 City in and county seat of Polk County, Iowa, United States, and Iowa federated state capital city
Scott County 173,216 County in Tennessee, United States
Johnson County 153,740 County in Iowa, United States
Cedar Rapids 134,027 City in Iowa
Black Hawk County 130,786 County in Iowa, United States
Woodbury County 103,138 County in Iowa, United States of America
Davenport 101,799 County seat of Scott County, Iowa, United States
Story County 98,237 County in Iowa, United States
Dubuque County 97,590 County in Iowa, United States
Dallas County 96,963 County in Iowa, United States
Pottawattamie County 93,328 County in Iowa, United States of America
Sioux City 82,651 City in Iowa, United States of America
Iowa City 75,130 City in Johnson County, Iowa
Ankeny 70,068 Suburb in Iowa