MainSource Bank ← View details 120 North Monroe Street, Williamsport, IN 47993 +1 765-762-2437 mainsourcebank.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 08:30 am — 05:00 pm Tuesday: 08:30 am — 05:00 pm Wednesday: 08:30 am — 05:00 pm Thursday: 08:30 am — 05:00 pm Friday: 08:30 am — 06:00 pm Saturday: 08:30 am — 12:00 pm Your comments * — Required information