Islip US Post Office

309 Main St # 3
Islip, NY 11751
Phone: (631) 581-7931
Fax: (516) 487-2508
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Ronkonkoma US Post Office

200 Hawkins Avenue
Ronkonkoma - 11779
(631) 588-0301

Nesconset US Post Office

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

Melville US Post Office

718 Walt Whitman Road
Melville - 11747
(631) 421-0726

Valley Stream US Post Office

111 S Franklin Avenue
Valley Stream - 11580
(516) 825-8739

New Hyde Park US Post Office

1001 2nd Avenue
New Hyde Park - 11040
(516) 354-6024

Laurel US Post Office

2168 Main Road
Laurel - 11948
(631) 298-1672

Oyster Bay US Post Office

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

Hempstead US Post Office

200 Fulton Avenue
Hempstead - 11550
(516) 560-1120

Port Jefferson Station US Post Office

544 Jefferson Placeaza
Port Jefferson Station - 11776
(631) 473-2751

Deer Park US Post Office

375 Carlls Path
Deer Park - 11729
(631) 667-6490