Middletown is a village in Logan County, Illinois, home to about 249 people across 0.3 square miles. Its ZIP code is 62666.
Homes sold for a median of $96 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Middletown. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Middletown’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)102 miles away |
|---|---|
| Closer regional airport | Abraham Lincoln Capital Airport (SPI)18 miles away |
| Nearest city of 250,000+ | St. Louis, MO107 miles away |
| Nearest city of 1 million+ | Chicago, IL156 miles away |
Straight-line distances from the center of Middletown; 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.
Middletown had 329 residents in the 2020 census, down 24% since 2000.
It’s the 1139th largest of 1,450 towns in Illinois by population.
Logan County grew from 28,680 residents in 1900 to 27,987 in 2020.
Logan 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 16°F. About 39.3 inches of rain and melted snow fall in a typical year, with about 13 inches of snow.
Source: NOAA 1991–2020 climate normals, Mason City 4se, IL weather station (6 miles away).
6,766 jobs at 536 businesses in Logan 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.
Public schools here are run by New Holland-Middletown ED 88. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| New Holland-Middletown Elem SchMiddletown | Pre-K–8 | 70 | Public | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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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.