Winneshiek County, Iowa
Winneshiek County, Iowa, has 19,733 residents (July 2025 estimate). Its county seat is Decorah. It uses Central Time and covers 690 sq mi (1,787 km²) of land.
- Resident population, July 2025
- 19,733
- Land area
- 690 sq mi (1,787 km²)
- County seat or government
- Decorah
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $79,066 ± $5,270
- Median home value
- $259,200 ± $13,750
- Median rent, with utilities
- $861 ± $70
- Homes lived in by their owners
- 74.2% ± 1.7 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: La Crosse-Onalaska, WI-MN metro area and Rochester, MN metro area
- Water area
- 0.29 sq mi (0.75 km²)
- State
- Iowa
- County code (FIPS)
- 19191
- Coordinates (central point)
- 43.292989, -91.850788
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Winneshiek County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 5210112,706 people
- 521725,877 people
- 521365,840 people
- 521623,744 people
- 521321,759 people
- 521611,532 people
- 521711,314 people
- 521651,098 people
- 521441,075 people
- 52133673 people
- 52140671 people
- 52168356 people
12 ZIP Code areas overlap Winneshiek County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Townships in Winneshiek County, largest first
- Decorah Township9,351 people
- Calmar Township1,784 people
- Military Township1,232 people
- Washington Township964 people
- Lincoln Township785 people
- Burr Oak Township710 people
- Bloomfield Township702 people
- Frankville Township559 people
- Pleasant Township539 people
- Canoe Township497 people
- Springfield Township388 people
- Sumner Township375 people
All 20
- Glenwood Township341 people
- Orleans Township334 people
- Madison Township259 people
- Bluffton Township247 people
- Hesper Township216 people
- Jackson Township210 people
- Highland Township207 people
- Fremont Township173 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Iowa, by county
School districts in Winneshiek County, largest first
- Decorah Community School District12,621 people
- Howard-Winneshiek Community School District8,927 people
- Allamakee Community School District8,229 people
- South Winneshiek Community School District4,683 people
- Postville Community School District3,880 people
- Turkey Valley Community School District2,811 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Decorah, Iowa (city)7,535 people
- Calmar, Iowa (city)974 people
- Ossian, Iowa (city)806 people
- Spillville, Iowa (city)356 people
- Fort Atkinson, Iowa (city)346 people
- Ridgeway, Iowa (city)315 people
- Burr Oak, Iowa (CDP)225 people
- Castalia, Iowa (city)142 people
- Jackson Junction, Iowa (city)26 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Allamakee County, Iowa24 mi east
- Howard County, Iowa24 mi west
- Chickasaw County, Iowa28 mi southwest
- Fillmore County, Minnesota29 mi northwest
- Fayette County, Iowa30 mi south
- Houston County, Minnesota31 mi northeast
- Clayton County, Iowa41 mi southeast
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county where you are now, check its ZIP area, or check the time zone where you are.