Geographic reference
O'Fallon city, Missouri
O'Fallon city is a Census place in Missouri.
Reference details
- State
- Missouri (MO)
- Census GEOID
- 2954074
- Land area
- 80.262 km²
- Water area
- 0.012 km²
- Representative point
- 38.778825, -90.72178
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.