Nason is a city in Jefferson County, Illinois, home to about 203 people across 0.9 square miles. It has no ZIP code of its own: it’s part of 62816.
Homes sold for a median of $103 per square foot in the three months ending August 2026, a seller’s market.
Mostly Bonnie; part is in Nason
Each card is that ZIP code’s whole market, including any part outside Nason. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Nason’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)87 miles away |
|---|---|
| Closer regional airport | Veterans Airport of Southern Illinois (MWA)31 miles away |
| Nearest city of 250,000+ | St. Louis, MO78 miles away |
| Nearest city of 1 million+ | Chicago, IL260 miles away |
Straight-line distances from the center of Nason; 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.
Nason had 199 residents in the 2020 census, down 15% since 2000.
It’s the 1203rd largest of 1,450 towns in Illinois by population.
Jefferson County grew from 28,133 residents in 1900 to 37,113 in 2020.
Jefferson 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 22°F. About 45 inches of rain and melted snow fall in a typical year, with about 10 inches of snow.
Source: NOAA 1991–2020 climate normals, Mt Vernon 3 Ne, IL weather station (11 miles away).
19,260 jobs at 882 businesses in Jefferson County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2022 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Nason.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 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 Bonnie and Ina.
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.