Riverhead US Post Office

1210 W Main St
Riverhead, NY 11901
Phone: (631) 727-1019
Fax: (516) 845-7406
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West Islip US Post Office

480 Union Blvd
West Islip - 11795
(631) 669-5157

East Setauket US Post Office

101 Main St
Setauket - 11733
(631) 941-4042

Bethpage US Post Office

339 Hicksville Road
Bethpage - 11714
(516) 938-3901

Great River US Post Office

62 River Road
Great River - 11739
(631) 581-7680

Jamesport US Post Office

1451 Route 25
Jamesport - 11947
(631) 722-5946

Old Westbury US Post Office

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

Middle Island US Post Office

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

Long Beach US Post Office

101 E Park Avenue
Long Beach - 11561
(516) 432-5484

New Hyde Park US Post Office

1568 Union Turnpike
New Hyde Park - 11040
(516) 616-6893

Islip Terrace US Post Office

136 Carleton Avenue
Islip Terrace - 11752
(631) 581-7894