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Debuting New Website
The City of O’Fallon is excited to announce the rollout of a new City website, and domain name. Beginning Monday, October 14, 2024, the City’s website will now be ofallonmo.gov, replacing the current ofallon.mo.us domain.
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100 North Main StreetO'Fallon, MO 63366
Phone: 636-240-2000
Hours: Monday – Friday: 8:30 a.m. – 4:30 p.m.
O'Fallon Municipal Centre
100 North Main Street
O'Fallon, MO 63366
Phone: 636-240-2000
Hours: Mon. – Fri.: 8:30 a.m. – 4:30 p.m.
The City of O’Fallon is excited to announce the rollout of a new City website, and domain name. Beginning Monday, October 14, 2024, the City’s website will now be ofallonmo.gov, replacing the current ofallon.mo.us domain.
Sign up to receive important notifications regarding incidents such as boil advisories, road closures, and customized notifications by texting "ofallonalerts" to 99411.
Sign up to receive important notifications regarding incidents such as boil advisories, road closures, and other customized notifications by texting "ofallonalerts" to 99411.
Saturday, October 26 | 5 p.m. - 7 p.m.
Join the O'Fallon Police Department at the CarShield Field parking lot for Halloween treats!
$10/Resident • $12/Non-Resident • 80+ Free!
Looking for more City events? View the full City calendar.
Sorry, our website's calendar is not compatible with the Internet Explorer browser. Might we suggest you try using Google Chrome, Mozilla Firefox or Microsoft Edge, instead?
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