Bayville US Post Office

251 Bayville Avenue
Bayville, NY 11709
Phone: (516) 628-9235
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Wyandanch US Post Office

1569 Straight Path
Wyandanch - 11798
(631) 643-3914

Yaphank US Post Office

5 E Main St
Yaphank - 11980
(631) 345-6829

Speonk US Post Office

323 Montauk Highway
Speonk - 11972
(631) 325-1741

Old Westbury US Post Office

223 Store Hill Road # A
Old Westbury - 11568
(516) 333-0964

Hauppauge US Post Office

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

Islandia US Post Office

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

Southold US Post Office

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

Garden City US Post Office

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

Hampton US Post Office

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

West Sayville US Post Office

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