Southold US Post Office

710 Traveler St
Southold, NY 11971
Phone: (631) 765-4027
Fax: (631) 360-0532
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Montauk US Post Office

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

Speonk US Post Office

323 Montauk Highway
Speonk - 11972
(631) 325-1741

Patchogue US Post Office

170 E Main St
Patchogue - 11772
(631) 475-8623

East Hampton US Post Office

12 Gay Road
East Hampton - 11937
(631) 324-6320

Blue Point US Post Office

141 Montauk Highway
Blue Point - 11715
(631) 363-6272

Smithtown US Post Office

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

US Post Office Processing Center

160 Duryea Road
Melville - 11747
(631) 755-2575

Mastic US Post Office

1450 Montauk Highway
Mastic - 11950
(631) 281-0275

Albertson US Post Office

860 Willis Avenue
Albertson - 11507
(516) 746-3512

West Babylon US Post Office

385 Route 109
West Babylon - 11704
(631) 893-0560