Central Islip US Post Office

110 E Suffolk Avenue
Central Islip, NY 11722
Phone: (631) 234-0547
Fax: (631) 234-7429
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Islip US Post Office

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

Centereach US Post Office

245 Centereach Mall
Centereach - 11720
(631) 588-7069

Calverton US Post Office

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

Water Mill US Post Office

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

New Hyde Park US Post Office

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

East Setauket US Post Office

450 Route 25a
East Setauket - 11733
(631) 941-4005

Northport US Post Office

240 Main St
Northport - 11768
(631) 261-6941

Remsenburg US Post Office

137 S Country Road
Remsenburg - 11960
(631) 325-5937

Shoreham US Post Office

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

Copiague US Post Office

695 Marconi Blvd
Copiague - 11726
(631) 842-9084