The Bryn Mawr Trust Company, Newtown Square Branch Basic Info Reviews Routing Numbers Map & Direction Name: The Bryn Mawr Trust Company, Newtown Square Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 3601 West Chester Pike Newtown Square, Pennsylvania 19073 Delaware County View other branches Phone: 610-355-9061 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer031101059YN031908485YY031976200YN231371964YN From: To: