East Hampton US Post Office

291 Springs Fireplace Road
East Hampton, NY 11937
Phone: (631) 324-0790
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Blue Point US Post Office

141 Montauk Highway
Blue Point - 11715
(631) 363-6272

Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor - 11963
(631) 725-8968

Hempstead US Post Office

200 Fulton Avenue
Hempstead - 11550
(516) 560-1120

Great Neck US Post Office

1 Welwyn Road
Great Neck - 11021
(516) 482-5013

US Post Office Processing Center

160 Duryea Road
Melville - 11747
(631) 755-2575

Holtsville US Post Office

162 Long Island Avenue
Holtsville - 11742
(631) 475-1761

Islandia US Post Office

PO Box 7800
Islandia - 11760
(631) 582-7420

Garden City US Post Office

830 Stewart Avenue
Garden City - 11599
(516) 228-7502

West Sayville US Post Office

12 Washington Avenue
West Sayville - 11796
(631) 589-6958

Bayville US Post Office

251 Bayville Avenue
Bayville - 11709
(516) 628-9235