Decatur County, Iowa

Decatur County, Iowa, has 7,655 residents (July 2025 estimate). Its county seat is Leon. It uses Central Time and covers 532 sq mi (1,378 km²) of land.

Decatur County in Iowa

Decatur County and its neighbors (simplified outlines). Open in OpenStreetMap ↗

Resident population, July 2025: 7,655
Land area: 532 sq mi (1,378 km²)
County seat or government: Leon
Time zone: Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income: $59,044 ± $4,382
Median home value: $113,900 ± $6,899
Median rent, with utilities: $611 ± $76
Homes lived in by their owners: 69.7% ± 2.7 points
County type: County
Metro or micro area: Outside any metro or micro area
Water area: 1.6 sq mi (4.14 km²)
State: Iowa
County code (FIPS): 19053
Coordinates (central point): 40.736379, -93.784580

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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 Decatur 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.

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ZIP Code areas, largest first

501402,842 people
501442,692 people
50123883 people
50133528 people
50065517 people
50264502 people
50147463 people
50103453 people
50108376 people
50067354 people
50262263 people

11 ZIP Code areas overlap Decatur 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

Decatur County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Decatur County, largest first

All 16

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Iowa, by county

School districts in Decatur County, largest first

Clarke Community School District8,437 people
Wayne Community School District3,867 people
Central Decatur Community School District3,788 people
Mount Ayr Community School District3,781 people
Lamoni Community School District3,086 people
Mormon Trail Community School District1,613 people
Murray Community School District1,474 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.

Bordering areas, nearest first

Distances are straight lines between map points.

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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.