Holbrook US Post Office

445 Furrows Road
Holbrook, NY 11741
Phone: (631) 588-0226
Fax: (516) 487-2508
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Mt. Sinai US Post Office

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

Oyster Bay US Post Office

1 Shore Avenue
Oyster Bay - 11771
(516) 922-8249

Hauppauge US Post Office

960 Wheeler Road
Hauppauge - 11788
(631) 360-6712

Ocean Beach US Post Office

315 Cottage Walk
Ocean Beach - 11770
(631) 583-7368

Atlantic Beach US Post Office

2009 Park St
Atlantic Beach - 11509
(516) 239-1178

Mineola US Post Office

160 1st St
Mineola - 11501
(516) 746-1372

Central Islip US Post Office

101 Federal Plaza
Central Islip - 11722
(631) 715-0001

Cedarhurst US Post Office

124 Grove Avenue
Cedarhurst - 11516
(516) 295-1452

Bay Shore US Post Office

10 Bay Shore Avenue
Bay Shore - 11706
(631) 969-3506

East Hampton US Post Office

291 Springs Fireplace Road
East Hampton - 11937
(631) 324-0790