How a small Illinois city became a hub for space exploration and military history

Science · Published 20 October 2026 Swipe more like this →

In short: O'Fallon, Illinois, is more than just a growing suburb of St. Louis. While its roots lie in coal mining and railroads, the city has quietly shaped the history of American flight and space travel, counting among its notable figures the man responsible for fitting astronauts into their iconic suits.

Founded in 1854 and named after Colonel John O'Fallon, this city in St. Clair County evolved from a farming community into a vital regional center. Its early prosperity was tied to the Baltimore and Ohio Railroad, which established a depot that put the town on the map. By the late 19th century, coal mining became the backbone of the local economy, a legacy still honored on the city's official flag today.

The city's modern identity is deeply intertwined with its proximity to Scott Air Force Base, located just five miles away. This military presence has defined the local workforce and culture for decades, influencing everything from the city's symbols to its community events. The O'Fallon Veterans Monument serves as a focal point for local commemorations, hosting the largest Veterans Day parade in the region.

Beyond its military ties, O'Fallon has surprising connections to the history of space exploration. Joseph W. Schmitt, a key figure in the National Aeronautics and Space Administration, hailed from the area. As a spacesuit technician, Schmitt was instrumental in ensuring the safety and functionality of the suits worn by astronauts during the height of the space race, bridging the gap between a small Midwestern town and the final frontier.

Today, O'Fallon is a thriving municipality with a population of 32,289 as of the 2020 census. Its growth, particularly following the expansion of Interstate 64 in the 1990s, has transformed it into the second-largest city in Southern Illinois. Despite this suburban expansion, the city maintains a unique character, balancing its historical roots in agriculture and industry with its ongoing role in supporting national defense and aerospace endeavors.

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