Franklin Square US Post Office

867 Hempstead Turnpike
Franklin Square, NY 11010
Phone: (516) 437-6647
Fax: (516) 352-2256
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Patchogue US Post Office

170 E Main St
Patchogue - 11772
(631) 475-8623

New Suffolk US Post Office

375 1st St
New Suffolk - 11956
(631) 734-6271

East Moriches US Post Office

3 Atlantic Avenue
East Moriches - 11940
(631) 878-0243

Mt. Sinai US Post Office

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

Lynbrook US Post Office

100 Broadway
Lynbrook - 11563
(516) 599-7587

Northport US Post Office

240 Main St
Northport - 11768
(631) 261-6941

Westhampton Beach US Post Office

170 Main St
Westhampton Beach - 11978
(631) 288-4093

Wading River US Post Office

1816 Wading River Manor Road
Wading River - 11792
(631) 929-0219

Quogue US Post Office

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

West Islip US Post Office

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