Summit Credit Union ← View details Windsor Street, Sun Prairie, WI 53590 +1 608-243-5000 summitcreditunion.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 08:30 am — 06:00 pm Tuesday: 08:30 am — 06:00 pm Wednesday: 08:30 am — 06:00 pm Thursday: 08:30 am — 06:00 pm Friday: 08:30 am — 06:00 pm Your comments * — Required information