Guaranty Bank and Trust Company ← View details 807 Mountain Avenue, Berthoud, CO 80513 +1 970-532-8135 guarantybankco.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 — 05:00 pm Saturday: 09:00 am — 12:00 pm Your comments * — Required information