Oak Run is a community in Knox County, Illinois, home to about 800 people across 4.3 square miles. Its ZIP code is 61428, and parts of 61485 are in Oak Run too.
Homes sold for a median of $185 per square foot in the three months ending August 2026, a seller’s market.
Mostly Oak Run
Mostly Victoria; part is in Oak Run
Each card is that ZIP code’s whole market, including any part outside Oak Run. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Oak Run’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Oak Run well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Chicago O'Hare International Airport (ORD)135 miles away |
|---|---|
| Closer regional airport | General Wayne A. Downing Peoria International Airport (PIA)31 miles away |
| Nearest city of 250,000+ | Chicago, IL141 miles away |
Straight-line distances from the center of Oak Run; 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.
Oak Run had 721 residents in the 2020 census, up 32% since 2010.
It’s the 769th largest of 1,450 towns in Illinois by population.
Knox County grew from 43,612 residents in 1900 to 49,967 in 2020.
Knox 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 14°F. About 40.5 inches of rain and melted snow fall in a typical year, with about 25 inches of snow.
Source: NOAA 1991–2020 climate normals, Knoxville, IL weather station (9 miles away).
14,242 jobs at 968 businesses in Knox County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Oak Run.
Nearest hospitals
Providers with an office here
| Dentists | 1 |
|---|
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
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Shares ZIP codes with Victoria.
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.