Plandome US Post Office

155 Stonytown Road
Plandome, NY 11030
Phone: (516) 627-3747
Fax: (516) 845-7406
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Hampton US Post Office

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

Great River US Post Office

62 River Road
Great River - 11739
(631) 581-7680

Sag Harbor US Post Office

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

Wyandanch US Post Office

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

Commack US Post Office

150 Veterans Memorial Highway
Commack - 11725
(631) 543-3647

North Baldwin US Post Office

1620 Grand Avenue
North Baldwin - 11510
(516) 223-5710

Smithtown US Post Office

25 Route 111
Smithtown - 11787
(631) 360-6709

Manhasset US Post Office

28 Maple Place
Manhasset - 11030
(516) 627-0536

Shirely US Post Office

800 Montauk Highway # 1
Shirley - 11967
(631) 281-0479

Islip US Post Office

309 Main St # 3
Islip - 11751
(631) 581-7931