| | Description: | Macoupin County, located in central Illinois, covers an area of 866 square miles and had a 2003 population of 49,055, according to estimates by the U.S. Department of Commerce's Bureau of the Census. Using these figures, Macoupin County was the 11th largest county in Illinois geographically, but 30th largest in terms of population. Combining these two measures, Macoupin County had the 45th highest population density per square mile among Illinois 102 counties. | |
