City of O'Fallon, Illinois Employee Directory
Government AdministrationIllinois, United States51-200 Employees
The City of O'Fallon, Illinois, functions as a local government administration serving a mid-sized community in St. Clair County within the St. Louis metropolitan East area. With a population around 30,400, the city provides housing options and a broad mix of services and businesses to residents and the local economy. Interstate 64 traverses the city, and its four interchanges contribute to accessibility for commuters and customers. Its location near Scott Air Force Base draws veterans, defense contractors, and active-duty personnel to the area. The city’s responsibilities cover public safety, planning, and a range of community services aimed at maintaining the local quality of life. In January 2026, media reports detailed a federal lawsuit alleging unpaid overtime and retaliation related to concerns raised by a former city paramedic.