Latitude and longitude of Clark County, Illinois
- Nearby Terre Haute, United States
Satellite map of Clark County, Illinois
Clark County is a county located in the southeastern part of U.S. state of Illinois, along the Indiana state line. As of the 2010 census, the population was 16,335. Its county seat is Marshall.
Latitude: 39° 19' 48.00" N
Longitude: -87° 47' 24.00" W