Commack US Post Office

150 Veterans Memorial Highway
Commack, NY 11725
Phone: (631) 543-3647
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East Rockaway US Post Office

10 Main St
East Rockaway - 11518
(516) 599-2157

Rockville US Post Office

250 Merrick Road
Rockville Centre - 11570
(516) 766-5749

Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor - 11963
(631) 725-8968

Smithtown US Post Office

25 Route 111
Smithtown - 11787
(631) 360-6709

Mt. Sinai US Post Office

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

Elmont US Post Office

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

Montauk US Post Office

73 S Euclid Avenue
Montauk - 11954
(631) 668-7043

West Sayville US Post Office

12 Washington Avenue
West Sayville - 11796
(631) 589-6958

Lindenhurst US Post Office

65 E Hoffman Avenue
Lindenhurst - 11757
(631) 226-6914

Westbury US Post Office

360 Maple Avenue
Westbury - 11590
(516) 333-3598