Central Islip US Post Office

101 Federal Plaza
Central Islip, NY 11722
Phone: (631) 715-0001
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1

Middle Island US Post Office

780 Middle Country Road
Middle Island - 11953
(631) 205-1089
2

Jericho US Post Office

425 N Broadway
Jericho - 11753
(516) 681-6248
3

Old Westbury US Post Office

223 Store Hill Road # A
Old Westbury - 11568
(516) 333-0964
4

Valley Stream US Post Office

111 S Franklin Avenue
Valley Stream - 11580
(516) 825-8739
5

Nesconset US Post Office

226 Smithtown Blvd
Nesconset - 11767
(631) 265-3278
6

Upton US Post Office

2 Center St
Upton - 11973
(631) 344-2539
7

Bridgehampton US Post Office

2322 Montauk Highway
Bridgehampton - 11932
(631) 537-9322
8

Bayville US Post Office

251 Bayville Avenue
Bayville - 11709
(516) 628-9235
9

Port Jefferson Station US Post Office

544 Jefferson Placeaza
Port Jefferson Station - 11776
(631) 473-2751
10

Farmingville US Post Office

500 Horseblock Road
Farmingville - 11738
(631) 732-8625