| | Description: | Henderson County, located in western Illinois, covers an area of 379 square miles and had a 2003 population of 8,073, according to estimates by the U.S. Department of Commerce's Bureau of the Census. Using these figures, Henderson County was the 24th smallest county in Illinois geographically, but 12th smallest in terms of population. Combining these two measures, Henderson County had the 8th lowest population density per square mile among Illinois 102 counties. | |
