Great Western Bank ← View details 1020 Main Street, Hamburg, IA 51640 +1 712-382-2341 greatwesternbank.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 03:00 pm Tuesday: 09:00 am — 03:00 pm Wednesday: 09:00 am — 03:00 pm Thursday: 09:00 am — 03:00 pm Friday: 09:00 am — 03:00 pm Your comments * — Required information