Alvin is a village in Vermilion County, Illinois, home to about 230 people across 0.8 square miles. Its ZIP code is 61811.
Homes sold for a median of $176 per square foot in the three months ending August 2026, a seller’s market.
Mostly Alvin; also Henning
Each card is that ZIP code’s whole market, including any part outside Alvin. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Indianapolis International Airport (IND)80 miles away |
|---|---|
| Closer regional airport | Purdue University Airport (LAF)36 miles away |
| Nearest city of 250,000+ | Indianapolis, IN85 miles away |
| Nearest city of 1 million+ | Chicago, IL106 miles away |
Straight-line distances from the center of Alvin; 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.
Alvin had 233 residents in the 2020 census, down 14% since 2010.
It’s the 1168th largest of 1,450 towns in Illinois by population.
Vermilion County grew from 65,635 residents in 1900 to 74,188 in 2020.
Vermilion 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 43.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Danville, IL weather station (11 miles away).
23,008 jobs at 1,300 businesses in Vermilion 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.
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Shares ZIP codes with Henning.
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.