Syosset US Post Office

40 Queens St
Syosset, NY 11791
Phone: (516) 921-0746
Fax: (516) 496-4736
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Holtsville US Post Office

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

Aquebogue US Post Office

212 Linda Avenue
Aquebogue - 11931
(631) 722-4368

Sagaponack US Post Office

542 Sagg Main St
Sagaponack - 11962
(631) 537-9346

Holbrook US Post Office

445 Furrows Road
Holbrook - 11741
(631) 588-0226

Hampton US Post Office

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

Selden US Post Office

109 College Placez
Selden - 11784
(631) 732-8627

North Babylon US Post Office

1196 Deer Park Avenue
North Babylon - 11703
(631) 667-4693

Smithtown US Post Office

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

Shoreham US Post Office

69 Route 25a
Shoreham - 11786
(631) 744-3185

Yaphank US Post Office

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