If you grew up off Mexico Road or still drive past O'Fallon City Hall, this map was made with you in mind. It's a modern aerial view with a vintage feel of O'Fallon in St. Charles County, Missouri, built from map and building data. Green hills roll across the whole sheet. Blue lakes sit in the low ground. More than 60,000 small red shapes mark the buildings, packed tight in the middle of town.
Find your street in O'Fallon
On this map you'll find North Main Street, South Main Street, O'Fallon City Hall, Veteran's Memorial Parkway, Mexico Road, Tom Ginnever Avenue, Winghaven Boulevard, Bryan Road, Belleau Creek Road, Laura Hill Road, Hopewell Road, Sonderen Street, Pieper Road, and more. Each red shape is a building, so zoom in on the preview and look for yours.
How O'Fallon got its name
O'Fallon's name goes back to the railroad. The village was surveyed in 1857. Nicholas Krekel led the work. He was a brother of Judge Arnold Krekel. The town was named for Colonel John O'Fallon, a wealthy man from St. Louis. He was also a director in the North Missouri Railroad. That account comes from the place names file at the State Historical Society of Missouri.
Some of the old town still stands. The Westhoff Grain and Mercantile Company building sits at 108 South Main Street. It joined the National Register in 2025. Sage Chapel Cemetery, on Veteran's Memorial Parkway, joined the list in 2018. The 2020 Census counted 91,316 people in O'Fallon. Look for South Main Street on the print, where the Westhoff building stands.
From South Main Street to Winghaven Boulevard

Created by KNOWOL in 2026. The print shows O'Fallon from above, with shaded green hills, blue lakes and thin streams, and every building in deep red. The light title panel at the bottom reads Aerial View of O'Fallon, Missouri, with 38°49' North 90°42' West beneath it.
It suits a living room, a home office or the hallway by the front door. It's a good gift for someone who moved away, or for a family that just bought a house off Winghaven Boulevard. Open the preview and find the streets you know. See sizes and frames for the O’Fallon map.
