Geographic reference
Monmouth city, Illinois
Monmouth city is a Census place in Illinois.
Reference details
- State
- Illinois (IL)
- Census GEOID
- 1750010
- Land area
- 11 km²
- Water area
- 0.053 km²
- Representative point
- 40.914233, -90.643075
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.