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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Shirely US Post Office

800 Montauk Highway # 1
Shirley - 11967
(631) 281-0479

Jamesport US Post Office

70 2nd St
South Jamesport - 11970
(631) 722-4317

Hicksville US Post Office

185 W John St
Hicksville - 11801
(516) 933-2300

Garden City US Post Office

600 Franklin Avenue
Garden City - 11530
(516) 747-2201

North Bellmore US Post Office

2465 Jerusalem Avenue
North Bellmore - 11710
(516) 785-0676

Mastic US Post Office

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

Farmingville US Post Office

500 Horseblock Road
Farmingville - 11738
(631) 732-8625

Nesconset US Post Office

226 Smithtown Blvd
Nesconset - 11767
(631) 265-3278

Water Mill US Post Office

670 Montauk Highway
Water Mill - 11976
(631) 726-6310

Oakdale US Post Office

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