Harristown is a village in Macon County, Illinois, home to about 1,550 people across 1.8 square miles. Its ZIP code is 62537, and parts of 62522 and 62551 are in Harristown too.
Homes sold for a median of $95 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Harristown
Mostly Decatur; part is in Harristown
Mostly Niantic; part is in Harristown
Each card is that ZIP code’s whole market, including any part outside Harristown. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Harristown’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)105 miles away |
|---|---|
| Closer regional airport | Decatur Airport (DEC)7 miles away |
| Nearest city of 250,000+ | St. Louis, MO107 miles away |
| Nearest city of 1 million+ | Chicago, IL154 miles away |
Straight-line distances from the center of Harristown; 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.
Harristown had 1,310 residents in the 2020 census, down 2% since 2000.
It’s the 572nd largest of 1,450 towns in Illinois by population.
Macon County grew from 44,003 residents in 1900 to 103,998 in 2020.
Macon 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 20°F. About 40.4 inches of rain and melted snow fall in a typical year, with about 14 inches of snow.
Source: NOAA 1991–2020 climate normals, Decatur Wtp, IL weather station (3 miles away).
42,511 jobs at 2,241 businesses in Macon 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.
Parks (7 nearby)
Grocery stores
Pharmacies
Libraries
Museums
Theaters and performance venues
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Sangamon Valley CUSD 9. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Sangamon Valley Primary SchoolHarristown | Pre-K–2 | 170 | Public | 4.4 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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Shares ZIP codes with Decatur and Niantic.
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.