Northwest Bank, Grove City Basic Info Reviews Routing Numbers Map & Direction Name: Northwest Bank, Grove City Main Office: No Service: Full Service Brick and Mortar Office Location: 200 South Center Street Grove City, Pennsylvania 16127 Mercer County View other branches Phone: 724-450-1300 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer041201114YN041202702YN243374218YY From: To: