Wilmington Savings Fund Society, FSB, Long Neck Branch Basic Info Reviews Routing Numbers Map & Direction Name: Wilmington Savings Fund Society, FSB, Long Neck Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 25926 Plaza Drive Millsboro, Delaware 19966 Sussex County View other branches Phone: 302-360-0020 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer031100102YY031100636YN031100924YN031918844YN231375436YN From: To: