![]() Photo from Digital-Topo-Maps.com | O'Fallon, IL 62269 Post Office Location: 1111 South Lincoln Avenue; O'Fallon, IL Year Post Office built: Town(s) Served: Venice Acceptable City Names: Belleville, O'Fallon, Shiloh Not Acceptable City Names: Sectional Service Facility: St. Louis (Northeast) County(ies): Madison, St. Clair Info on O'Fallon: The City of O'Fallon is a suburb of St. Louis, Missouri, in what is locally known as the "Metro East". It was founded in 1854, and named after a wealth St. Louis Area resident. This town is served by the O'Fallon Township High School. O'Fallon is found east of Belleville in St. Clair County, near Scott Air Force Base. |
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