North Baldwin US Post Office

1620 Grand Avenue
North Baldwin, NY 11510
Phone: (516) 223-5710
Fax: (516) 437-2896
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Cherry Grove US Post Office

1000 Bay Walk
Cherry Grove - 11782
(631) 589-1177

Brightwaters US Post Office

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

Amityville US Post Office

77 Ireland Place
Amityville - 11701
631-264-3532

Nesconset US Post Office

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

East Setauket US Post Office

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

Port Jefferson US Post Office

407 E Main St # 17
Port Jefferson - 11777
(631) 473-1065

Old Bethpage US Post Office

696 Old Bethpage Road
Old Bethpage - 11804
(516) 249-2915

West Islip US Post Office

480 Union Blvd
West Islip - 11795
(631) 669-5157

Mt. Sinai US Post Office

457 Route 25a
Mt Sinai - 11766
(631) 928-0394

Bellport US Post Office

26 Station Road
Bellport - 11713
(631) 286-8561