United States Postal Service 240 Main St, Northport, NY11768 This Northport location of the United States Postal Service provides stamps, mail and package services, the option to…More hold mail and more. It also offers passport application services and post office boxes.
United States Postal Service/East Northport 297 Larkfield Rd, East Northport, NY11731 This is the main post office for this area. Its services include passport application, online P.O. boxes, and automated…More postal centers. It also has outdoor drop boxes for your convenience.