O'Fallon Missouri Map
Explore O'Fallon, Missouri, with this interactive street and satellite map.
This page also offers TOPO MAPS — the official USGS topographic sheets — plus USGS aerial imagery, a labelled USNG grid overlay, a distance and bearing tool, and a GPS grid-reference readout. See How to Use This Map below.
Interactive Map of O'Fallon, Missouri
How to Use This O'Fallon, Missouri Map
This interactive map shows the street layout and satellite imagery for O'Fallon, Missouri. Use the Map and Satellite buttons above to switch between street map and aerial imagery views. Use the + and − buttons to zoom in or out, or scroll your mouse wheel while holding the Control key to zoom. On a touchscreen, use a two-finger pinch gesture. Drag the map to pan to any area of Missouri or beyond.
Click ⛶ Fullscreen to expand the map to fill your screen. To return to the normal page view, press the Escape key, click the ✕ Exit Fullscreen button that appears above the map, or on a mobile device tap the back button (Android) or the close icon (iOS).
TOPO MAPS — NEW. Click the green 🔍 Search Maps button below the map to open a second map with a Base map row offering three choices. OSM is the standard OpenStreetMap street map. Topo shows the official USGS topographic maps from The National Map — contours, hydrography, land cover and shaded relief, the same mapping used for hiking, hunting and back-country navigation in the Adirondacks, the Catskills and the Finger Lakes. Imagery shows USGS aerial photography, mostly 1-metre NAIP. The search box finds any US town, county or landmark by name, so you are not limited to O'Fallon.
Reading the map like a paper quad. Click Grid to overlay the U.S. National Grid (USNG), labelled along the edges exactly as a printed topographic sheet is — at normal zoom the squares are one kilometre across, so you can read a six-figure grid reference by eye and judge distance directly off the map. Click Measure, then tap two points, to get the distance between them together with the grid bearing in degrees and mils, the true bearing, and the magnetic bearing to set on a compass.
Click 📍 My position to take a single GPS reading from your device. It marks where you are and reports your position as a USNG grid reference as well as plain latitude and longitude — USNG being the format FEMA and US search and rescue teams work from — with a Copy position button so you can paste it straight into a text message. It takes one reading and stops, rather than tracking continuously, to conserve your battery. Note that map tiles need cell coverage, but a GPS reading does not — your coordinates stay correct even where the map itself cannot load.
| City | O'Fallon |
| State | Missouri (MO) |
| County | St. Louis (city) |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 38.783459 |
| Longitude | -90.715253 |
| Population | 91,316 |
| Density | 1184.1 /km² |
| Incorporated | Yes |
| ZIP Codes | 63115, 63367 |
| Area Code | 314 |
| School District | Fort Zumwalt R-II School District |
About O'Fallon, Missouri
O'Fallon is a locality in St. Louis (city), Missouri, United States. It has a population of 91,316. The population density is 1184.1 people per km². O'Fallon is located at 38.7835°N, 90.7153°W. It observes the Central Time (America/Chicago) timezone. O'Fallon is an incorporated locality. ZIP codes: 63115, 63367.O'Fallon stretches across a landscape defined by the steady, inland character of the Midwestern plains, where the horizon remains wide and open under a vast, unencumbered sky. It lies 3.5 miles north-northwest of Saint Louis, MO (from Saint Louis, MO: bearing 331°T), and is situated 3.5 miles north-northwest of St. Louis. Louis. The ground here holds the memory of ancient glacial shifts, presenting a terrain that tilts toward the Mississippi River, which flows with a heavy, deliberate strength just two miles to the east. Across the quiet expanse, the light at dusk takes on a pale, bruised violet hue, catching the edges of the flatlands and the low, distant silhouette of Les Mamelles rising seventeen miles away. Within the local geography, the land feels deliberate and grounded, marked by the presence of St Louis City (Fairgrounds Park Lake), which serves as a singular, quiet anchor for the surrounding acreage.
Growth in O'Fallon has transformed the soil from its early agricultural roots into a modern landscape of commerce and suburban development, echoing the labor and persistence of those who first settled these prairie reaches. The local economy now pulses with the rhythm of professional services and retail, replacing the older, smaller-scale farming cycles that once dictated the pace of the day. Residents move through a life anchored by the proximity of Kerr Island and the distant, rushing sound of Chain of Rocks, navigating a community that values plain-spoken utility over ornamentation. O'Fallon maintains a steady, unremarkable equilibrium, where the sound of wind moving through dry grass during the autumn months often carries more weight than the passing of any single afternoon.
Nearby Outdoor Places
- Winterhaven Park (Local Park) — 0.6 mi, 028° NE
- Ft. Zumwalt Park (Local Park) — 0.8 mi, 023° NE
- St Jude Dream Home 2017 (Monument) — 2.6 mi, 145° SE
- Ofallon Sports Park (Local Recreation) — 2.8 mi, 174° S
- Unknown Open Space (Local Recreation) — 3.1 mi, 100° E
- Busch (August A.) Memorial Conservation Area (State Conservation Area) — 3.3 mi, 214° SW
- Sailboat Sculpture (Public Artwork) — 3.4 mi, 187° S
- Weldon Spring Conservation Area (State Conservation Area) — 5.1 mi, 168° S
- NGS Monument SC 03 (Monument) — 5.6 mi, 083° E
- Katy Trail (State Park) — 7.0 mi, 168° S
- Big Muddy National Fish And Wildlife Refuge (National Wildlife Refuge) — 7.5 mi, 152° SE · 32k acres
- Lewis & Clark Marker (Monument) — 7.5 mi, 181° S
- Landings at Spirit Golf Club (Attraction) — 9.4 mi, 158° S
- Dr. Edmund A. Babler Memorial State Park (State Park) — 9.9 mi, 171° S
- Michelle's Arts and Crafts (Gallery) — 10.0 mi, 051° NE
- The Factory (Attraction) — 10.1 mi, 140° SE
- Scenic Overlook (Viewpoint) — 11.0 mi, 061° NE
- Half court basketball (Attraction) — 11.6 mi, 093° E
- Young Hall Auditorium (Theatre) — 11.7 mi, 089° E
- New Town Amphitheater (Theatre) — 12.4 mi, 073° E
- Missouri Artists On Main (Gallery) — 12.5 mi, 091° E
- Tavern Rock Cave (Attraction) — 12.6 mi, 191° S
- Golden Eagle-Toppmeyer Site (Historic Ruins) — 13.9 mi, 049° NE
- Two Rivers National Wildlife Refuge (National Wildlife Refuge) — 13.9 mi, 042° NE · 1,866 acres
- B&B Wildwood 10 Theatre (Cinema) — 14.7 mi, 162° S
- B&B Theaters Wildwood (Cinema) — 14.8 mi, 162° S
- Morton J. May Foundation Gallery (Museum) — 14.8 mi, 130° SE
- Myrtle E. and Earl E. Walker Hall (Arts Centre) — 14.9 mi, 130° SE
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About This O'Fallon Map Page
This page provides an embedded street and satellite map of O'Fallon, Missouri. Coordinates: 38.783459, -90.715253. Live weather conditions are sourced directly from the National Weather Service. Real-time local and world news feeds keep the page current.
Detailed location data for O'Fallon includes the ZIP code (63115, 63367), telephone area code (314), county seat of St. Louis (city), and school district assignment (Fort Zumwalt R-II School District).
Search Maps opens a second, independent map. It searches OpenStreetMap for any US town, county or landmark by name; offers USGS topographic maps and USGS aerial imagery as base layers; overlays a labelled U.S. National Grid (USNG) so the map can be read like a printed topographic quad; measures distance and grid, true and magnetic bearings between any two points; and takes a single GPS fix reporting your position as a USNG grid reference and as latitude and longitude. Map tiles require cell coverage, but a GPS position does not, so the coordinates remain correct even where the map cannot load.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity. Population figures are sourced from the 2020 US Census.
| Page generated | September 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Map layers | Google Maps; © OpenStreetMap contributors; USGS The National Map topographic and aerial imagery (public domain); magnetic declination from NOAA NCEI (World Magnetic Model) |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. |
