DeWitt County, Illinois

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DeWitt County is a county located in the U.S. state of Illinois. As of 2000, the population is 16,798. Its name is in honor of the seventh Governor of New York State, DeWitt Clinton. Its county seat is Clinton, Illinois[1]. The U.S. Census Bureau and the USGS list the county's name as De Witt, although the county uses the name DeWitt (no space). The county was formed in 1839 from Macon and McLean Counties.



DeWitt County from its creation in 1839 to the splitting off of Piatt County in 1841

Dewitt County from 1841 to 1845

DeWitt County in 1845, when it was reduced to its current size


According to the U.S. Census Bureau, the county has a total area of 405 square miles (1,048.9 km2), of which 398 square miles (1,030.8 km2) is land and 8 square miles (20.7 km2) (1.87%) is water.

Adjacent counties

Major highways

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