What is the address for first commonwealth federal credit union? First Commonwealth Federal Credit Union PO Box 20450 Lehigh Valley, PA 18002-0450 First Commonwealth's Routing Number: 2313 7919 9What are the hours of operation for first community credit union? Hours. Monday - Friday: 8:00 am to 8:00 pm. Saturday: 9:00 am to 3:00 pm. Mailing Address. First Commonwealth Federal Credit Union. PO Box 20450. Lehigh Valley, PA 18002-0450. Live Chat. Instantly connect with a Member Experience Associate for general product and service questions.Where is commoncommonwealth central credit union located? CommonWealth Central Credit Union P.O. Box 641690 San Jose, CA 95164- 1690 Convenient Access Locally, Nationwide, and Worldwide!How do i contact the whitehall branch of the fcu? Contact the Whitehall Branchlocation at 2752 MacArthur Road by calling (610) 821-2403 or contact the credit union by any of these means: Phone: (610) 821-2403 Toll Free: (888) 821-2400 Mailing Address: First Commonwealth FCU