what county is alton il in
East Alton is a village in Madison County, Illinois, United States. The population was 6,830 at the 2000 census. East Alton is located at 38Â°53â²0â³N 90Â°6â²22â³W / 38.883333Â°N 90.10611Â°W / 38.883333; -90.10611 (38.883397, -90.106113).