Upton US Post Office

2 Center St
Upton, NY 11973
Phone: (631) 344-2539
Fax: (516) 496-4736
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Calverton US Post Office

3690 Middle Country Road
Calverton - 11933
(631) 727-0067

Floral Park US Post Office

35 Tulip Avenue
Floral Park - 11001
(516) 616-5184

Centerport US Post Office

434 E Main St
Centerport - 11721
(631) 261-6918

Baldwin US Post Office

2260 Grand Avenue
Baldwin - 11510
(516) 223-5024

Lynbrook US Post Office

100 Broadway
Lynbrook - 11563
(516) 599-7587

Garden City US Post Office

830 Stewart Avenue
Garden City - 11599
(516) 228-7502

East Quogue US Post Office

6 Bay Avenue
East Quogue - 11942
(631) 653-5247

Sea Cliff US Post Office

200 Sea Cliff Avenue
Sea Cliff - 11579
(516) 671-8258

Shelter Island US Post Office

45 N Ferry Road
Shelter Island - 11964
(631) 749-1857

North Baldwin US Post Office

1620 Grand Avenue
North Baldwin - 11510
(516) 223-5710