| | Description: | Brown County, located in western Illinois, covers an area of 306 square miles and had a 2003 population of 6,879, according to estimates by the U.S. Department of Commerce's Bureau of the Census. Using these figures, Brown County was the 11th smallest county in Illinois geographically, but 9th smallest in terms of population. Combining these two measures, Brown County had the 10th lowest population density per square mile among Illinois 102 counties. | |
