Northmark Bank, Winchester Branch Basic Info Reviews Routing Numbers Map & Direction Name: Northmark Bank, Winchester Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 26 Mount Vernon Street Winchester, Massachusetts 01890 Middlesex County View other branches Phone: 781-721-9100 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer011302603YY011307187YN From: To: