Southold US Post Office

710 Traveler St
Southold, NY 11971
Phone: (631) 765-4027
Fax: (631) 360-0532
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Middle Island US Post Office

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

Wainscott US Post Office

357 Montauk Highway
Wainscott - 11975
(631) 537-8943

Cold Spring Harbor US Post Office

126 Main St
Cold Spring Hbr - 11724
(631) 692-5307

Mineola US Post Office

160 1st St
Mineola - 11501
(516) 746-1372

East Setauket US Post Office

450 Route 25a
East Setauket - 11733
(631) 941-4005

Bohemia US Post Office

200 Orville Dr
Bohemia - 11716
(631) 589-2487

Bay Shore US Post Office

1314 5th Avenue
Bay Shore - 11706
(631) 969-3504

Brightwaters US Post Office

145 Orinoco Dr
Brightwaters - 11718
(631) 206-4855

Holtsville US Post Office

162 Long Island Avenue
Holtsville - 11742
(631) 475-1761

Aquebogue US Post Office

212 Linda Avenue
Aquebogue - 11931
(631) 722-4368