List of US Post Office Stores in Islip Terrace, NY Outlet Note Regular Brands US Post Office New York Islip Terrace Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Islip Terrace 136 Carleton Ave (631) 581-7894 People Also Viewed