Cornerstone Credit Union ← View details 615 West 3rd Street, Sterling, IL 61081 +1 815-625-9276 cornerstonecu.org Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 05:00 pm Tuesday: 09:00 am — 05:00 pm Wednesday: 09:30 am — 05:00 pm Thursday: 09:00 am — 05:00 pm Friday: 08:00 am — 06:00 pm Saturday: 09:00 am — 12:00 pm Your comments * — Required information