Stony Brook Post Office
Harbor Crescent
129 Main Street, Stony Brook, NY 11790
(800) 275-8777
Full Service: Monday - Friday : 9:00 AM - 5:00 PM
Full Service: Saturday : 9:00 AM - 1:00 PM

Postal and Passport Service. Full assortment of greeting cards, postage and packing materials, and P.O. Boxes.  Mechanical eagle in pediment flaps its wings on the hour, 8 am- 8 pm