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is a city in Vermilion County, Illinois, United States. It is the principal city of the 'Danville, Illinois Metropolitan Statistical Area' which encompasses all of Danville and Vermilion County. As of the 2000 census, the city had a total population of 33,904. It is the county seat of Vermilion County.
Danville is located approximately south of Chicago, east of Champaign-Urbana, and west of Indianapolis, Indiana. Illinois Route 1, U.S. Route 136, and U.S. Route 150 intersect in Danville; Interstate 74 passes through the south end of town. Lake Vermilion is located on the northwest side of town.
According to the United States Census Bureau, the city has a total area of 17.1 square miles (44.3 km²), of which, 17.0 square miles (44.0 km²) of it is land and 0.1 square miles (0.3 km²) of it (0.58%) is water.