Northwest Bank, West Seneca Basic Info Reviews Routing Numbers Map & Direction Name: Northwest Bank, West Seneca Main Office: No Service: Full Service Brick and Mortar Office Location: 1055 Union Road West Seneca, New York 14224 Erie County View other branches Phone: 716-809-9000 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer041201114YN041202702YN243374218YY From: To: