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.

Des MoinesCedar RapidsDavenport
Winneshiek County in Iowa
Allamakee CountyHoward CountyDecorahCalmarOssianSpillvilleFort Atkinson
Winneshiek County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
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 zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-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

  1. 5210112,706 people
  2. 521725,877 people
  3. 521365,840 people
  4. 521623,744 people
  5. 521321,759 people
  6. 521611,532 people
  7. 521711,314 people
  8. 521651,098 people
  9. 521441,075 people
  10. 52133673 people
  11. 52140671 people
  12. 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

  1. Decorah Township9,351 people
  2. Calmar Township1,784 people
  3. Military Township1,232 people
  4. Washington Township964 people
  5. Lincoln Township785 people
  6. Burr Oak Township710 people
  7. Bloomfield Township702 people
  8. Frankville Township559 people
  9. Pleasant Township539 people
  10. Canoe Township497 people
  11. Springfield Township388 people
  12. Sumner Township375 people
All 20
  1. Glenwood Township341 people
  2. Orleans Township334 people
  3. Madison Township259 people
  4. Bluffton Township247 people
  5. Hesper Township216 people
  6. Jackson Township210 people
  7. Highland Township207 people
  8. 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

  1. Decorah Community School District12,621 people
  2. Howard-Winneshiek Community School District8,927 people
  3. Allamakee Community School District8,229 people
  4. South Winneshiek Community School District4,683 people
  5. Postville Community School District3,880 people
  6. 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.

  1. Decorah, Iowa (city)7,535 people
  2. Calmar, Iowa (city)974 people
  3. Ossian, Iowa (city)806 people
  4. Spillville, Iowa (city)356 people
  5. Fort Atkinson, Iowa (city)346 people
  6. Ridgeway, Iowa (city)315 people
  7. Burr Oak, Iowa (CDP)225 people
  8. Castalia, Iowa (city)142 people
  9. Jackson Junction, Iowa (city)26 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Allamakee County, Iowa24 mi east
  2. Howard County, Iowa24 mi west
  3. Chickasaw County, Iowa28 mi southwest
  4. Fillmore County, Minnesota29 mi northwest
  5. Fayette County, Iowa30 mi south
  6. Houston County, Minnesota31 mi northeast
  7. 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.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.