First Citizens Bank ← View details 2601 4th Street Southwest, Mason City, IA 50401 +1 641-423-1600 firstcitizensnb.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 04:00 pm Tuesday: 09:00 am — 04:00 pm Wednesday: 09:00 am — 04:00 pm Thursday: 09:00 am — 04:00 pm Friday: 09:00 am — 05:00 pm Saturday: 09:00 am — 12:00 pm Your comments * — Required information