St. James US Post Office

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

37 Northern Blvd
Greenvale - 11548
(516) 621-7163

Mt. Sinai US Post Office

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

Mastic US Post Office

1450 Montauk Highway
Mastic - 11950
(631) 281-0275

Massapequa Park US Post Office

4910 Merrick Road
Massapequa Park - 11762
(516) 798-1268

Wyandanch US Post Office

1569 Straight Path
Wyandanch - 11798
(631) 643-3914

Miller Placeace US Post Office

47 Echo Avenue
Miller Placeace - 11764
(631) 473-8134

Bethpage US Post Office

288 Grumman Road W
Bethpage - 11714
(516) 349-5000

East Northport US Post Office

297 Larkfield Road
East Northport - 11731
(631) 368-5632

Mill Neck US Post Office

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

Centereach US Post Office

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