 vermilion county is a county located 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 2010 census, it had a population of 81,625, which is a decrease of 2.7% from 83,919 in 2000. it contains 21 incorporated settlements; the county seat and largest city is danville. the county is also divided into 19 townships which provide local services. vermilion county is part of the danville, illinois, metropolitan statistical area. ==history==  vermilion county is named after the vermilion river, which passes through the county and empties into the wabash river in indiana near cayuga; the river was so named because of the color of the earth along its route.jones 1911, p. 25. the area which became vermilion county was under the flag of france from 1682 to 1763, as part of new france. it was owned by great britain for fifteen years after the french and indian war; it then became part of the colonies after the revolutionary war when the area was ceded to virginia and was known as "the illinois county of virginia". later it was part of the indiana territory, then the illinois territory, and finally the state of illinois.jones 1911, pp. 32â35. the county was officially created on january&nbsp;18, 1826 from a portion of edgar county. there was an unorganized territory to the north and west which was attached to the county; champaign and iroquois cou
Illinois_counties Populated_places_established_in_1826 Vermilion_County,_Illinois