Vermilion County

Also known as Vermilion County, Illinois, Vermilion County, IL

county in Illinois, United States

Key facts

Country: United States
State: Illinois
Region: Central Illinois
Metro area: Danville Micropolitan
Incorporated: January 18, 1826
Named after: Vermilion River
County seat and largest city: Danville
Total: 901.28 sq mi (2,334.3 km )
Land: 898.37 sq mi (2,326.8 km )
Water: 2.91 sq mi (7.5 km )
Rank: 7th largest county in Illinois
Estimate 2025: 71,259
Density

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Article

Vermilion County is a county in the eastern part of the U.S. state of Illinois, between the Indiana border and Champaign County. It was established in 1826 and was the 45th of Illinois' 102 counties. According to the 2020 United States census, it had a population of 74,188. It contains 21 incorporated settlements; the county seat and largest city is Danville.

Vermilion County is part of the Danville, IL Micropolitan Statistical Area, as well as the larger Champaign–Urbana–Danville combined statistical area.