Northwest Bank, Mount Lebanon Basic Info Reviews Routing Numbers Map & Direction Name: Northwest Bank, Mount Lebanon Main Office: No Service: Full Service Brick and Mortar Office Location: 437 Cochran Road Mount Lebanon, Pennsylvania 15228 Allegheny County View other branches Phone: 412-343-1771 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer041201114YN041202702YN243374218YY From: To: