| Description: | Kankakee County, located in northeastern Illinois, covers an area of 677 square miles and had a 2003 population of 105,625, according to estimates by the U.S. Department of Commerce's Bureau of the Census. Using these figures, Kankakee County was the 27th largest county in Illinois geographically, but 18th largest in terms of population. Combining these two measures, Kankakee County had the 18th highest population density per square mile among Illinois 102 counties. | |