Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor, NY 11963
Phone: (631) 725-8968
Fax: (516) 766-5845
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Great Neck US Post Office

661 Middle Neck Road
Great Neck - 11023
(516) 829-6315

Middle Island US Post Office

780 Middle Country Road
Middle Island - 11953
(631) 205-1089

Melville US Post Office

718 Walt Whitman Road
Melville - 11747
(631) 421-0726

Islandia US Post Office

PO Box 7800
Islandia - 11760
(631) 582-7420

Oakdale US Post Office

927 Montauk Highway
Oakdale - 11769
(631) 589-2683

East Moriches US Post Office

3 Atlantic Avenue
East Moriches - 11940
(631) 878-0243

Massapequa Park US Post Office

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

North Babylon US Post Office

1196 Deer Park Avenue
North Babylon - 11703
(631) 667-4693

Garden City US Post Office

830 Stewart Avenue
Garden City - 11599
(516) 228-7502

Bayport US Post Office

850 Montauk Highway
Bayport - 11705
(631) 472-7396