Astoria Bank, Port Washington Branch Basic Info Reviews Routing Numbers Map & Direction Name: Astoria Bank, Port Washington Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 110 Main Street Port Washington, New York 11050 Nassau County View other branches Phone: 516-627-6840 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer221471861YN221472815YY From: To: