Madison County, Iowa
Madison County, Iowa, has 17,270 residents (July 2025 estimate). Its county seat is Winterset. It uses Central Time and covers 561 sq mi (1,453 km²) of land.
- Resident population, July 2025
- 17,270
- Land area
- 561 sq mi (1,453 km²)
- County seat or government
- Winterset
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $90,855 ± $10,483
- Median home value
- $245,100 ± $12,639
- Median rent, with utilities
- $1,036 ± $149
- Homes lived in by their owners
- 80.1% ± 3.1 points
- County type
- County
- Metro or micro area
- Des Moines-West Des Moines, IA metro areaOutlying county
- Water area
- 1.15 sq mi (2.98 km²)
- State
- Iowa
- County code (FIPS)
- 19121
- Coordinates (central point)
- 41.330622, -94.015184
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 Madison 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
- 5021116,835 people
- 502738,950 people
- 502613,399 people
- 500722,979 people
- 502402,393 people
- 500612,123 people
- 502291,585 people
- 502101,487 people
- 500701,221 people
- 50257914 people
- 50149883 people
- 50218346 people
15 ZIP Code areas overlap Madison 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 Madison County, largest first
- Madison Township1,633 people
- South Township1,586 people
- Lee Township1,163 people
- Scott Township875 people
- Ohio Township868 people
- Crawford Township769 people
- Jefferson Township731 people
- Lincoln Township685 people
- Monroe Township675 people
- Penn Township610 people
- Union Township539 people
- Douglas Township484 people
All 16
- Jackson Township320 people
- Walnut Township251 people
- Webster Township214 people
- Grand River Township107 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Iowa, by county
School districts in Madison County, largest first
- Adel-De Soto-Minburn Community School District11,020 people
- Winterset Community School District10,491 people
- Interstate 35 Community School District4,365 people
- Nodaway Valley Community School District4,038 people
- Martensdale-St. Marys Community School District3,827 people
- Van Meter Community School District3,641 people
- Earlham Community School District3,315 people
- East Union Community School District3,176 people
- Orient-Macksburg Community School District1,160 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.
- West Des Moines, Iowa (city)71,083 people
- Winterset, Iowa (city)5,416 people
- Earlham, Iowa (city)1,528 people
- St. Charles, Iowa (city)914 people
- Truro, Iowa (city)518 people
- Patterson, Iowa (city)346 people
- East Peru, Iowa (city)92 people
- Macksburg, Iowa (city)56 people
- Bevington, Iowa (city)15 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Warren County, Iowa23 mi east
- Clarke County, Iowa24 mi southeast
- Adair County, Iowa24 mi west
- Union County, Iowa24 mi southwest
- Dallas County, Iowa25 mi north
- Polk County, Iowa34 mi northeast
- Guthrie County, Iowa35 mi northwest
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.
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