| Description: | Champaign County, located in central Illinois, covers an area of 997 square miles and had a 2003 population of 186,800, according to estimates by the U.S. Department of Commerce's Bureau of the Census. Using these figures, Champaign County was the 5th largest county in Illinois geographically, but 10th largest in terms of population. Combining these two measures, Champaign County had the 16th highest population density per square mile among Illinois 102 counties. | |