First Commonwealth Bank, Harmar Office Basic Info Reviews Routing Numbers Map & Direction Name: First Commonwealth Bank, Harmar Office Main Office: No Service: Full Service Brick and Mortar Office Location: 55 Alpha Drive West Pittsburgh, Pennsylvania 15238 Allegheny County View other branches Phone: 724-226-4300 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer043303887YN043306826YY044011453YN From: To: