| | Description: | Franklin County, located in southern Illinois, covers an area of 412 square miles and had a 1998 population of 40,476, according to estimates by the U.S. Department of Commerce's Bureau of the Census. Using these figures, Franklin County was the 72nd largest county in Illinois geographically, but 33rd largest in terms of population. Combining these two measures, Franklin County had the 24th highest population density per square mile among Illinois 102 counties. | |
