Great Western Bank ← View details 100 East South Street, Mount Ayr, IA 50854 +1 641-464-3888 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 Saturday: 08:30 am — 12:00 pm Your comments * — Required information