Seymour is a community in Champaign County, Illinois, home to about 270 people across 0.1 square miles. It has no ZIP code of its own: it’s part of 61875.
Homes sold for a median of $123 per square foot in the three months ending August 2026, a seller’s market.
Mostly Mahomet; part is in Seymour
Each card is that ZIP code’s whole market, including any part outside Seymour. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Seymour’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | St. Louis Lambert International Airport (STL)140 miles away |
|---|---|
| Closer regional airport | University of Illinois Willard Airport (CMI)9 miles away |
| Nearest city of 250,000+ | St. Louis, MO140 miles away |
| Nearest city of 1 million+ | Chicago, IL126 miles away |
Straight-line distances from the center of Seymour; 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.
Seymour had 317 residents in the 2020 census, up 5% since 2010.
It’s the 1118th largest of 1,450 towns in Illinois by population.
Champaign County grew from 47,622 residents in 1900 to 205,865 in 2020.
Champaign County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 17°F. About 39.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Champaign 9 Sw, IL weather station (5 miles away).
73,261 jobs at 4,237 businesses in Champaign County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (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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Shares ZIP codes with Mahomet.
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.