East Islip US Post Office

11 Greenwood Avenue
East Islip, NY 11730
Phone: (631) 581-7807
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West Sayville US Post Office

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

Sea Cliff US Post Office

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

East Quogue US Post Office

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

Hicksville US Post Office

109 Ludy St
Hicksville - 11801
(516) 433-9188

Garden City US Post Office

600 Franklin Avenue
Garden City - 11530
(516) 747-2201

North Babylon US Post Office

1196 Deer Park Avenue
North Babylon - 11703
(631) 667-4693

Sagaponack US Post Office

542 Sagg Main St
Sagaponack - 11962
(631) 537-9346

Mattituck US Post Office

140 Love Ln
Mattituck - 11952
(631) 298-1364

Brightwaters US Post Office

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

Copiague US Post Office

695 Marconi Blvd
Copiague - 11726
(631) 842-9084