Sea Cliff US Post Office

200 Sea Cliff Avenue
Sea Cliff, NY 11579
Phone: (516) 671-8258
Fax: (516) 766-5845
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Oakdale US Post Office

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

Fishers Island US Post Office

1 Oriental Avenue
Fishers Island - 06390
(631) 788-7835

Nesconset US Post Office

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

Elmont US Post Office

778 Elmont Road
Elmont - 11003
(516) 285-4078

Southold US Post Office

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

Kings Point US Post Office

300 Steamboat Road
Kings Point - 11024
(516) 773-5298

Farmingville US Post Office

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

Roosevelt US Post Office

1 Babylon Turnpike
Roosevelt - 11575
(516) 378-6973

East Islip US Post Office

11 Greenwood Avenue
East Islip - 11730
(631) 581-7807

Mastic Beach US Post Office

110 Mastic Road
Mastic Beach - 11951
(631) 281-0359