Mayor Bill Hennessy

Bill Hennessy
8 Shelby Crest Court
O'Fallon, MO 63366
636-379-5500
bhennessy@ofallon.mo.us
Term ends: April 2025
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.
8 Shelby Crest Court
O'Fallon, MO 63366
636-379-5500
bhennessy@ofallon.mo.us
Term ends: April 2025