Holbrook US Post Office

445 Furrows Road
Holbrook, NY 11741
Phone: (631) 588-0226
Fax: (516) 487-2508
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Uniondale US Post Office

1000 Front St
Uniondale - 11553
(516) 481-8245

Smithtown US Post Office

25 Route 111
Smithtown - 11787
(631) 360-6709

Levittown US Post Office

180 Gardiners Avenue
Levittown - 11756
(516) 735-7343

Blue Point US Post Office

141 Montauk Highway
Blue Point - 11715
(631) 363-6272

West Sayville US Post Office

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

Sound Beach US Post Office

25 New York Avenue
Sound Beach - 11789
(631) 744-0837

Southold US Post Office

710 Traveler St
Southold - 11971
(631) 765-4027

Bayville US Post Office

251 Bayville Avenue
Bayville - 11709
(516) 628-9235

Ronkonkoma US Post Office

200 Hawkins Avenue
Ronkonkoma - 11779
(631) 588-0301

Hauppauge US Post Office

960 Wheeler Road
Hauppauge - 11788
(631) 360-6712