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Nason

A city of 199 people in Illinois
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Now in Nason

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Around town

The places and views that make it Nason

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Outdoors in Nason

Parks & trails →
Conserved land0%none recorded
Trails0.4 mi0.4 mi per sq mi
Parks & preserves1named on the map

Know a trail or park that’s missing? Anyone can add it to OpenStreetMap, and it shows up here on the next refresh.

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

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Know Nason

The town at a glance, and the guide to how things work

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About Nason

City in Illinois, United States
1923Established
199Population
0.9 sq miArea
436 ftElevation

Nason is a city in Jefferson County, Illinois, United States. The population was 199 people as of the 2020 census, making it the least populous incorporated city in the state of Illinois. It is part of the Mount Vernon Micropolitan Statistical Area.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Town numbers

ZIP code62866
Area code618
Living in Nason

Work & commute in Nason

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Most working residents leave Nason for work: only 0% work in town. The top destinations are Mount Vernon (41%), Nashville (9%) and Marion (4%). Half commute less than 13 miles.

Mount Vernon
41%
Nashville
9%
Marion
4%
Waltonville
2%
Census LEHD 2023 · ACSWork & commute in Nason →

Health in Nason

Compared with Illinois

8better than IL·10worse

of 32 measures CDC estimates. The other 14 are too close to call.

BetterToo close to callWorse

What stands out

Care nearby

Good Samaritan Regional Hlth CenterMount Vernon · 8.5 mi · ER
Sesser Community Health CenterSesser · 7 mi · sliding-scale fees
Primary careShortage · county-wide
DentalShortage · county-wide
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Nason · CMS · HRSAHealth in Nason →

Natural hazards in Nason

64
High

Expected storm and flood damage is higher than in 64% of U.S. communities.

🏚️ Earthquakes🌊 Inland flooding🌪️ Tornadoes
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Nason →

Climate in Nason

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Nason has chilly winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 24°, and about 8 inches of snow falls in a normal winter.

43° / 26°Winter
66° / 45°Spring
86° / 65°Summer
68° / 46°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Nason →

Libraries near Nason

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Nearest: Sesser Public LibrarySesser · 7.5 miles · 37 hrs a week

Famous people close to Nason

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Where Nason is

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Locator map of Nason
Wikimedia Commons · Map: DemocraticLuntz · DemocraticLuntz at English Wikipedia · CC BY-SA 4.0

Location map

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01