Smithtown US Post Office

25 Route 111
Smithtown, NY 11787
Phone: (631) 360-6709
Fax: (631) 360-0532
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Williston Park US Post Office

446 Willis Avenue
Williston Park - 11596
(516) 746-3247

New Hyde Park US Post Office

44 Millers Ln
New Hyde Park - 11040
(516) 616-6853

Nesconset US Post Office

226 Smithtown Blvd
Nesconset - 11767
(631) 265-3278

Hicksville US Post Office

109 Ludy St
Hicksville - 11801
(516) 433-9188

Shelter Island US Post Office

45 N Ferry Road
Shelter Island - 11964
(631) 749-1857

Fishers Island US Post Office

1 Oriental Avenue
Fishers Island - 06390
(631) 788-7835

Fire Island Pines Post Office

Fire Island Pines Marina
Fire Isle Pines - 11782
(631) 597-6300

Bridgehampton US Post Office

2322 Montauk Highway
Bridgehampton - 11932
(631) 537-9322

East Northport US Post Office

297 Larkfield Road
East Northport - 11731
(631) 368-5632

Great River US Post Office

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