St. James US Post Office

325 Lake Avenue
St James, NY 11780
Phone: (631) 584-4138
Fax: (631) 360-0532
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Quogue US Post Office

6 Midland St
Quogue - 11959
(631) 653-6427

Glenwood Landing US Post Office

123 Glenwood Road
Glenwood Landing - 11547
(516) 676-8452

Peconic US Post Office

2575 Peconic Ln
Peconic - 11958
(631) 765-9348

Jamesport US Post Office

1451 Route 25
Jamesport - 11947
(631) 722-5946

Sea Cliff US Post Office

200 Sea Cliff Avenue
Sea Cliff - 11579
(516) 671-8258

Wantagh US Post Office

3300 Park Avenue
Wantagh - 11793
(516) 785-3425

Deer Park US Post Office

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

East Marion US Post Office

9165 Main Road
East Marion - 11939
(631) 477-1668

Islip Terrace US Post Office

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

East Islip US Post Office

11 Greenwood Avenue
East Islip - 11730
(631) 581-7807