Mayor Bill Hennessy

100 North Main Street divider O'Fallon, MO 63366 divider Phone: 636-240-2000
Hours: Monday – Friday: 8:30 a.m. – 4:30 p.m.

Mayor Bill Hennessy

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O'Fallon

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.

Term ends: April 2025

Katie Hunsaker, Administrative Assistant

636-379-3697

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