East Setauket US Post Office

101 Main St
Setauket, NY 11733
Phone: (631) 941-4042
Fax: (516) 766-5845
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Oakdale US Post Office

927 Montauk Highway
Oakdale - 11769
(631) 589-2683

Calverton US Post Office

3690 Middle Country Road
Calverton - 11933
(631) 727-0067

Centerport US Post Office

434 E Main St
Centerport - 11721
(631) 261-6918

Smithtown US Post Office

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

Kings Point US Post Office

300 Steamboat Road
Kings Point - 11024
(516) 773-5298

Water Mill US Post Office

670 Montauk Highway
Water Mill - 11976
(631) 726-6310

Syosset US Post Office

40 Queens St
Syosset - 11791
(516) 921-0746

Port Jefferson US Post Office

407 E Main St # 17
Port Jefferson - 11777
(631) 473-1065

Merrick US Post Office

2040 Merrick Road
Merrick - 11566
(516) 378-7087

Deer Park US Post Office

375 Carlls Path
Deer Park - 11729
(631) 667-6490