City
City of O'Fallon
O'Fallon is a city in Illinois, in St. Clair County.
- State
- Illinois
- Population
- 32,169
- Officials listed
- 2
- Incorporated
- —
- Government type
- —
- Fiscal year starts
- —
- Region
- Not listed
- Coordinates
- 38.6000, -89.9154
- County
About O'Fallon
O'Fallon is listed in the Illinois city directory with St. Clair County. The directory currently includes 1,294 cities in Illinois and 30 in St. Clair County.
The Census place estimate for O'Fallon is 32,169 residents.
By population, it ranks 2 of the 30 cities the directory lists in St. Clair County.
Location
Open larger map Map data © OpenStreetMap contributors
Contact
The Illinois source used for this directory does not publish a mailing address or phone number for O'Fallon.
Council meetings
The Illinois source used for this directory does not publish a council meeting schedule for O'Fallon.
Officials (2)
The directory lists 2 officials for O'Fallon, reproduced from the Illinois source. Position titles link to the statewide position directory.
| Position | Name | Source profile |
|---|---|---|
| Clerk | Jerry Mouser | — |
| Mayor | Herb Roach | — |
Other cities in St. Clair County
O'Fallon is one of 30 cities the directory lists in St. Clair County. The other cities, ordered by population, are below.
| City | Population |
|---|---|
| Belleville | 40,560 |
| Collinsville | 23,766 |
| East St. Louis | 17,808 |
| Cahokia Heights | 17,052 |
| Fairview Heights | 16,115 |
| Shiloh | 14,754 |
| Swansea | 14,445 |
| Columbia | 10,919 |
Source
City, county, contact, meeting, and official records for O'Fallon are reproduced from Illinois Blue Book incorporated places + Census estimates.
Population figures are Census place estimates. Fields the source does not publish are left blank rather than inferred. See the Illinois coverage page and the About page for sourcing and corrections.