Sound Beach US Post Office

25 New York Avenue
Sound Beach, NY 11789
Phone: (631) 744-0837
Fax: (631) 360-0532
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Riverhead US Post Office

1210 W Main St
Riverhead - 11901
(631) 727-1019

Islip Terrace US Post Office

136 Carleton Avenue
Islip Terrace - 11752
(631) 581-7894

Hauppauge US Post Office

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

Roslyn US Post Office

1391 Old Northern Blvd
Roslyn - 11576
(516) 621-7397

Holtsville US Post Office

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

Fishers Island US Post Office

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

Mt. Sinai US Post Office

457 Route 25a
Mt Sinai - 11766
(631) 928-0394

Cherry Grove US Post Office

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

New Suffolk US Post Office

375 1st St
New Suffolk - 11956
(631) 734-6271

Speonk US Post Office

323 Montauk Highway
Speonk - 11972
(631) 325-1741