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O'Fallon, MO

O'Fallon, Missouri has a total population of 79,329.

German immigrant Nicholas Krekel was O'Fallon's first resident and first retailer in 1856, and in 1857, the first post master and first railroad agent, as well. He operated his store out of his house, the first home built in O'Fallon. 

In 1912, O'Fallon incorporated with about 600 residents. By 1956, O'Fallon's population had grown to 1,357. The City's three-day Centennial celebration, which included a beard-growing contest, drew spectators from many neighboring towns. About this time, O'Fallon's first subdivisions were started. A sign was posted along the highway, "O'Fallon, a Good Place to Live." Many residents commuted to manufacturing jobs in St. Louis.

Today, O'Fallon's borders have expanded to about 30 square miles and the  population is nearly 80,000. The same railroad line that started the city is still in operation.

Watch a River City Rascals game at T.R, Hughes Ballpark,  Tour the Darius Held Home or the O'Fallon Historical Society Log Cabin Museum, both are open by appointment.  You can also pay tribute to our armed forces at the O'Fallon Veterans Memorial Walk.

You can reach the city of O'Fallon at 636-240-2000 or at


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