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City of O’Fallon
Debuts New Website
Debuts New Website
The City of O’Fallon is excited to announce the rollout of our website and domain. Please visit the link below for the most up-to-date information.
Welcome to O'Fallon, Missouri
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100 North Main Street
O'Fallon, MO 63366Phone: 636-240-2000
Hours: Monday – Friday: 8:30 a.m. – 4:30 p.m.
