Islip US Post Office

309 Main St # 3
Islip, NY 11751
Phone: (631) 581-7931
Fax: (516) 487-2508
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Albertson US Post Office

860 Willis Avenue
Albertson - 11507
(516) 746-3512

East Norwich US Post Office

1001 Oyster Bay Road
East Norwich - 11732
(516) 922-8283

Bridgehampton US Post Office

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

Mastic Beach US Post Office

110 Mastic Road
Mastic Beach - 11951
(631) 281-0359

Hauppauge US Post Office

960 Wheeler Road
Hauppauge - 11788
(631) 360-6712

Cherry Grove US Post Office

1000 Bay Walk
Cherry Grove - 11782
(631) 589-1177

Merrick US Post Office

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

East Setauket US Post Office

101 Main St
Setauket - 11733
(631) 941-4042

Shelter Island Heights US Post Office

6 Grand Avenue
Shelter Island Heights - 11965
(631) 749-0486

Mill Neck US Post Office

32 Frost Mill Road
Mill Neck - 11765
(516) 922-8247