Wilmington Savings Fund Society, FSB, Union Street Branch Basic Info Reviews Routing Numbers Map & Direction Name: Wilmington Savings Fund Society, FSB, Union Street Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 211 North Union Street Wilmington, Delaware 19805 New Castle County View other branches Phone: 302-571-6508 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer031100102YY031100636YN031100924YN031918844YN231375436YN From: To: