Geographic reference
Marshall County, Illinois
Marshall County is a county or county-equivalent in Illinois.
Reference details
- State
- Illinois (IL)
- Census GEOID
- 17123
- Land area
- 1,001.865 km²
- Water area
- 30.344 km²
- Representative point
- 41.031119, -89.342371
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.