Flushing Bank, Grants Plaza Branch Basic Info Reviews Routing Numbers Map & Direction Name: Flushing Bank, Grants Plaza Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 661 Hillside Avenue New Hyde Park, New York 11040 Nassau County View other branches Phone: 516-488-6400 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer021414345YN026072928YN226070474YY226070762YN226072333YN From: To: