O'Fallon Illinois Map
O'Fallon, Illinois — interactive Google street map, satellite and terrain views, Street View, live National Weather Service conditions and 7-day forecasts, real-time local and world news, and an editorial description of O'Fallon, St. Clair County.
Interactive Map of O'Fallon, Illinois
| City | O'Fallon |
| State | Illinois (IL) |
| County | St. Clair |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 38.592272 |
| Longitude | -89.911212 |
| Population | 32,262 |
| Density | 785.2 /km² |
| Incorporated | N/A |
About O'Fallon, Illinois
O'Fallon is a locality in St. Clair County, Illinois, United States. It has a population of 32,262. The population density is 785.2 people per km². O'Fallon is located at 38.5923°N, 89.9112°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 62269.
O'Fallon unfolds across a landscape of gentle, fertile plains, where the horizon stretches wide under a sky that often seems to hold its breath before a storm. The land here, a rich, dark loam, whispers of the agricultural bounty it has sustained for generations, its contours softened by rolling fields and the occasional stand of mature oak and maple trees. As the sun dips, it casts a warm, amber glow across the western edges of O'Fallon, painting the scattered farmsteads and the newer residential developments in a quiet, enduring light. The air, especially in the late afternoon, carries a faint, earthy scent, a mingling of freshly turned soil and the distant hum of life. The roots of O'Fallon run deep, tracing back to the pioneering spirit that first settled these Illinois prairies, drawn by the promise of fertile land and westward expansion. While its origins are agricultural, O'Fallon has steadily grown, its economy now a blend of commerce, industry, and the continuing legacy of farming that shapes the surrounding countryside. The town serves as a vital hub for the region, its streets alive with the daily commerce of families and businesses, a steady pulse that belies its tranquil appearance. Distinctive among its neighbors, O'Fallon has cultivated a character of pragmatic optimism, a place where the past is honored but the future is actively built, a characteristic reflected in its well-maintained parks and the vibrant community events that punctuate the year.
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About This O'Fallon Map Page
This page provides an interactive Google map of O'Fallon, Illinois with street, satellite and terrain views and integrated Street View imagery. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on O'Fallon and St. Clair County. Coordinates and population data are also included.
Location data for O'Fallon is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity, not name matching alone — ensuring the correct O'Fallon is identified even where the name is shared across multiple counties or states.
| Page generated | June 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |
