Seaton is a village in Mercer County, Illinois, home to about 228 people across 1.6 square miles. Its ZIP code is 61476.
Mostly Seaton
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| Nearest major airport | Des Moines International Airport (DSM)150 miles away |
|---|---|
| Closer regional airport | Southeast Iowa Regional Airport (BRL)25 miles away |
| Nearest city of 250,000+ | Madison, WI156 miles away |
| Nearest city of 1 million+ | Chicago, IL171 miles away |
Straight-line distances from the center of Seaton; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Seaton had 214 residents in the 2020 census, down 12% since 2000.
It’s the 1170th largest of 1,450 towns in Illinois by population.
Mercer County grew from 20,945 residents in 1900 to 15,699 in 2020.
Mercer County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 13°F. About 39.2 inches of rain and melted snow fall in a typical year, with about 22 inches of snow.
Source: NOAA 1991–2020 climate normals, Aledo, IL weather station (10 miles away).
2,200 jobs at 258 businesses in Mercer County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2022 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.