Geographic reference
Clark County, Illinois
Clark County is a county or county-equivalent in Illinois.
Reference details
- State
- Illinois (IL)
- Census GEOID
- 17023
- Land area
- 1,298.595 km²
- Water area
- 8.731 km²
- Representative point
- 39.332334, -87.791683
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.