Commerce Bank ← View details 101 East Elm Street, O'Fallon, MO 63366 +1 800-453-2265 commercebank.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 05:00 pm Tuesday: 09:00 am — 05:00 pm Wednesday: 09:00 am — 05:00 pm Thursday: 09:00 am — 05:00 pm Friday: 09:00 am — 06:00 pm Saturday: 09:00 am — 12:00 pm Your comments * — Required information