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100 North Main Street
O'Fallon, MO 63366
Phone: 636-379-5532
Email: [email protected]

©2018-2021 City of O'Fallon, Missouri
 

Major Employers

As testament to O’Fallon’s economic vigor, large corporations like Citi and Mastercard International recognize the City of O’Fallon as a great place to call home. O’Fallon considers its businesses (both large and small) and the employees who serve them to be partners in maintaining the City as one of the nation’s best and most attractive places to do business.
True Manufacturing HQ

Headquarters & Operations

Headquarters & Operations

International firm building in O'Fallon

International Firms

International Firms

Citi in O'Fallon, MO

Largest Employers

Largest Employers

O'Fallon Casting machinist

Manufacturing Firms

Manufacturing Firms

O’Fallon Fact: With distinctive features that include a platoon of bronze boots and an eternal flame, no other monument in the United States is quite like O’Fallon’s Veterans Memorial Walk, which was dedicated in 2001 as a place to honor all U.S. soldiers, past and present. Each year, thousands of people visit the Walk, which is free and open to the public 24/7.