West Babylon US Post Office

385 Route 109
West Babylon, NY 11704
Phone: (631) 893-0560
Fax: (516) 496-4736
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East Quogue US Post Office

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

Manhasset US Post Office

28 Maple Place
Manhasset - 11030
(516) 627-0536

Riverhead US Post Office

1210 W Main St
Riverhead - 11901
(631) 727-1019

Glen Cove US Post Office

2 Glen Cove Avenue
Glen Cove - 11542
(516) 671-7847

Mt. Sinai US Post Office

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

Nesconset US Post Office

226 Smithtown Blvd
Nesconset - 11767
(631) 265-3278

Hauppauge US Post Office

150 Oser Avenue
Hauppauge - 11788
(631) 231-3155

Calverton US Post Office

3690 Middle Country Road
Calverton - 11933
(631) 727-0067

Mattituck US Post Office

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

Farmingdale US Post Office

380 Main St
Farmingdale - 11735
(516) 249-1552