Lynbrook US Post Office

100 Broadway
Lynbrook, NY 11563
Phone: (516) 599-7587
Fax: (631) 226-5599
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Water Mill US Post Office

670 Montauk Highway
Water Mill - 11976
(631) 726-6310

East Hampton US Post Office

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

Seaford US Post Office

3575 Merrick Road
Seaford - 11783
(516) 785-3851

Old Bethpage US Post Office

696 Old Bethpage Road
Old Bethpage - 11804
(516) 249-2915

Holbrook US Post Office

445 Furrows Road
Holbrook - 11741
(631) 588-0226

Cherry Grove US Post Office

1000 Bay Walk
Cherry Grove - 11782
(631) 589-1177

Cutchogue US Post Office

240 Griffing St
Cutchogue - 11935
(631) 734-6032

Shirely US Post Office

800 Montauk Highway # 1
Shirley - 11967
(631) 281-0479

Sagaponack US Post Office

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

Bayville US Post Office

251 Bayville Avenue
Bayville - 11709
(516) 628-9235