Holtsville US Post Office

162 Long Island Avenue
Holtsville, NY 11742
Phone: (631) 475-1761
Fax: (516) 487-2508
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Greenport US Post Office

131 Front St
Greenport - 11944
(631) 477-1493

Mill Neck US Post Office

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

Plandome US Post Office

155 Stonytown Road
Plandome - 11030
(516) 627-3747

East Hampton US Post Office

291 Springs Fireplace Road
East Hampton - 11937
(631) 324-0790

Old Westbury US Post Office

223 Store Hill Road # A
Old Westbury - 11568
(516) 333-0964

Plainview US Post Office

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

Cedarhurst US Post Office

124 Grove Avenue
Cedarhurst - 11516
(516) 295-1452

West Sayville US Post Office

12 Washington Avenue
West Sayville - 11796
(631) 589-6958

Quogue US Post Office

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

New Hyde Park US Post Office

2038 Hillside Avenue
New Hyde Park - 11040
(516) 354-5685