O'Fallon, Missouri
O'Fallon is a city in St. Charles County, Missouri, with an estimated population of 94,074 in 2023. It sits at 38.7847, -90.7207 in the America/Chicago time zone.
| Field | Value |
|---|---|
| Place name | O'Fallon |
| Type | city |
| State | Missouri (MO) |
| County | St. Charles County |
| Population (2023 est.) | 94,074 |
| Land area | 30.52 sq mi (79.06 km²) |
| Coordinates | 38.7847, -90.7207 |
| Time zone | America/Chicago |
| Telephone area codes | 636 |
Where is O'Fallon?
O'Fallon is located in Missouri, in St. Charles County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
Dardenne Prairie 5 km · MOLake St. Louis 6 km · MOCottleville 7 km · MOSt. Paul 7 km · MOJosephville 8 km · MOSt. Peters 10 km · MOWeldon Spring 10 km · MOWentzville 13 km · MO
Other places in St. Charles County
St. Charles 71,800St. Peters 59,413Wentzville 47,497Lake St. Louis 18,661Dardenne Prairie 13,803Cottleville 6,043Weldon Spring 5,263St. Paul 3,622Flint Hill 846Josephville 543
Frequently asked questions
What county is O'Fallon, MO in?
O'Fallon is in St. Charles County, Missouri.
What is the population of O'Fallon, MO?
The 2023 Census Bureau estimate is 94,074.
What time zone is O'Fallon in?
O'Fallon is in the America/Chicago time zone.