Hewlett US Post Office

1245 Hewlett Placez
Hewlett, NY 11557
Phone: (516) 374-0973
Fax: (516) 487-2508
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Kings Point US Post Office

300 Steamboat Road
Kings Point - 11024
(516) 773-5298

Great Neck US Post Office

1 Welwyn Road
Great Neck - 11021
(516) 482-5013

Plainview US Post Office

1662 Old Country Road
Plainview - 11803
(516) 845-7162

Center Moriches US Post Office

35 Railroad Avenue
Center Moriches - 11934
(631) 878-0953

Sayville US Post Office

130 Greene Avenue
Sayville - 11782
(631) 589-6963

Central Islip US Post Office

101 Federal Plaza
Central Islip - 11722
(631) 715-0001

Southold US Post Office

710 Traveler St
Southold - 11971
(631) 765-4027

East Marion US Post Office

9165 Main Road
East Marion - 11939
(631) 477-1668

Mt. Sinai US Post Office

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

Mattituck US Post Office

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