City of O'Fallon, Illinois
City of O'Fallon: city in Illinois.
About
City of O'Fallon is a city located in the county of Saint Clair in the U.S. state of Illinois.
Quick Facts about City of O'Fallon
| Country | United States of America |
| State | Illinois (United States) |
| County | Saint Clair County |
| Postal code | 62269 |
| Phone Area Codes | 618 |
| Area | 39.82 km2 |
| Latitude & Longitude | 38.5970,-89.9149 |
| Establishment | January 01, 1854 (172 years ago) |
| Time Zone | America/Chicago |
| Local time | 11:55:33 (16th September 2026) |
Geography
City of O'Fallon is located at 38°35'49"N 89°54'54"W (38.5969600, -89.9149200).
City of O'Fallon map
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Official website of City of O'Fallon
Official WebsitePeople born in City of O'Fallon (3)
People born in City of O'Fallon, including actor William Holden, actor Rus Conklin, football placekicker Tucker McCann, .
More notable people
Nearby Schools and Colleges
Schools and campuses linked to City of O'Fallon, IL. Select a name to open its map and contact details.
| Code | Name | City | ZIP |
|---|---|---|---|
| 143215 | Southwestern Illinois College | Belleville (IL) | 62221-5899 |
Nearby Transit Stations (9)
Rail and bus stations connected to City of O'Fallon, IL. Select a station to open its map and address details.
| Code | Name | Address | Type |
|---|---|---|---|
| STL | Gateway Transportation Center | 551 South 16th St. | RAIL |
| ALN | Alton | 3400 College Ave. | RAIL |
| KWD | Kirkwood | 110 West Argonne Dr. | RAIL |
| CEN | Centralia station | 108 East Broadway | RAIL |
| CRV | Carlinville | 128 Alton Rd. | RAIL |
Closest post offices linked to City of O'Fallon.
| Post Office Name | City | ZIP |
|---|---|---|
| O Fallon Post Office | O Fallon (IL) | 62269 |
Other cities in Saint Clair County
Cities, towns, neighborhoods & other populated places in Saint Clair County , IL. (more)
| City Name | Population | Title |
|---|---|---|
| Belleville | 40,536 | The county seat of St. |
| O'Fallon | 29,606 | Township in St. |
| East Saint Louis | 25,776 | City in St. |
| Crest Hill | 20,209 | City in Will County, Illinois |
| Fairview Heights | 16,127 | City in Saint Clair County, Illinois, United States |
| Cahokia | 13,742 | Village in St. |
| Shiloh | 13,653 | Town in St. |
| Swansea | 13,276 | Village in St. |
| Pontiac | 11,176 | City in Illinois, USA |
| Summit | 10,977 | Village in Illinois, USA |
| Mascoutah | 8,076 | City in Saint Clair County, Illinois, United States |
| Centreville | 4,844 | City in Illinois, United States |
| Lebanon | 4,225 | City in St. |
| Freeburg | 4,223 | City in Illinois, United States of America |
| Rosemont | 4,147 | Village in the U. |
| Caseyville | 4,115 | City in Illinois, United States of America |