SONABANK, Middleburg Branch Basic Info Reviews Routing Numbers Map & Direction Name: SONABANK, Middleburg Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 10 West Washington Street Middleburg, Virginia 20118 Loudoun County View other branches Phone: 540-687-3893 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer051409278YY055003421YN055073448YN056073599YN255072582YN From: To: