City of O'Fallon, Illinois

Welcome to our dedicated page for O'Fallon, located in the state of Illinois, St. Clair County. Here, you will find detailed information about this city, including its geographical location, population data, administrative services, and local resources.

This page provides essential details such as the city hall's contact information, including its address, office hours, and ways to reach out via phone or email, making it easier for you to access city-related services. Additionally, we offer useful insights into key local services, including hospitals, schools, parks, and other points of interest in O'Fallon, St. Clair County.

You can also explore up-to-date demographic statistics, learn about the city's history and unique features, and find answers to frequently asked questions regarding services and procedures.

What county is O'Fallon IL in?

O'Fallon, IL is located in St. Clair County

Where is O'Fallon, Illinois ?

O'Fallon is situated in St. Clair County, within the southwestern part of Illinois and the United States. It lies approximately 18 miles east of St. Louis, Missouri, providing proximity to this major city and serving as part of the Greater St. Louis metropolitan area. The municipality is also near Scott Air Force Base.

What is the cost of living in O'Fallon IL ?

The cost of living in O'Fallon, Illinois (St. Clair County) is relatively affordable. Housing averages around $200,000, while monthly transportation costs are about $800. Grocery prices are reasonable, with the average household spending approximately $300 monthly. Overall, O'Fallon offers a balanced cost structure for residents.

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