Great River US Post Office

62 River Road
Great River, NY 11739
Phone: (631) 581-7680
Fax: (516) 487-2508
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East Hampton US Post Office

291 Springs Fireplace Road
East Hampton - 11937
(631) 324-0790

Southold US Post Office

710 Traveler St
Southold - 11971
(631) 765-4027

Hampton US Post Office

16 Ponquogue Avenue
Hampton Bays - 11946
(631) 728-6994

East Hampton US Post Office

12 Gay Road
East Hampton - 11937
(631) 324-6320

Hempstead US Post Office

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

Wainscott US Post Office

357 Montauk Highway
Wainscott - 11975
(631) 537-8943

West Sayville US Post Office

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

Elmont US Post Office

260 Elmont Road
Elmont - 11003
(516) 354-5947

Bayport US Post Office

850 Montauk Highway
Bayport - 11705
(631) 472-7396

Hauppauge US Post Office

150 Oser Avenue
Hauppauge - 11788
(631) 231-3155