Plainville is a village in Adams County, Illinois, home to about 183 people across 0.2 square miles. Its ZIP code is 62365.
Mostly Plainville; also Richfield
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| Nearest major airport | St. Louis Lambert International Airport (STL)84 miles away |
|---|---|
| Closer regional airport | Quincy Regional Airport Baldwin Field (UIN)10 miles away |
| Nearest city of 250,000+ | St. Louis, MO94 miles away |
| Nearest city of 1 million+ | Chicago, IL229 miles away |
Straight-line distances from the center of Plainville; 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.
Plainville had 271 residents in the 2020 census, up 9% since 2000.
It’s the 1226th largest of 1,450 towns in Illinois by population.
Adams County grew from 67,058 residents in 1900 to 65,737 in 2020.
Adams County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 19°F. About 36.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Quincy Rgnl Ap, IL weather station (10 miles away).
31,699 jobs at 1,787 businesses in Adams 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 Richfield.
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.