Geographic reference
Washington County, Illinois
Washington County is a county or county-equivalent in Illinois.
Reference details
- State
- Illinois (IL)
- Census GEOID
- 17189
- Land area
- 1,457.12 km²
- Water area
- 3.386 km²
- Representative point
- 38.35314, -89.417187
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.