Seaford US Post Office

3575 Merrick Road
Seaford, NY 11783
Phone: (516) 785-3851
Fax: (516) 766-5845
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New Hyde Park US Post Office

1568 Union Turnpike
New Hyde Park - 11040
(516) 616-6893

Speonk US Post Office

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

Plainview US Post Office

1662 Old Country Road
Plainview - 11803
(516) 845-7162

Carle Place US Post Office

309 Westbury Avenue
Carle Placeace - 11514
(516) 333-3147

Lawrence US Post Office

12 Bayview Avenue
Lawrence - 11559
(516) 239-2834

Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor - 11963
(631) 725-8968

Elmont US Post Office

798 Meacham Avenue
Elmont - 11003
(516) 887-6247

Fire Island Pines Post Office

Fire Island Pines Marina
Fire Isle Pines - 11782
(631) 597-6300

Peconic US Post Office

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

Centereach US Post Office

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