MainStreet Bank, Herndon Branch Basic Info Reviews Routing Numbers Map & Direction Name: MainStreet Bank, Herndon Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 727 Elden Street Herndon, Virginia 20170 Fairfax County View other branches Phone: 703-481-4567 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer056009246YY056009288YN From: To: