Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor, NY 11963
Phone: (631) 725-8968
Fax: (516) 766-5845
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Glen Head US Post Office

240 Glen Head Road # 1
Glen Head - 11545
(516) 676-8465

Jericho US Post Office

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

Shelter Island US Post Office

45 N Ferry Road
Shelter Island - 11964
(631) 749-1857

New Suffolk US Post Office

375 1st St
New Suffolk - 11956
(631) 734-6271

Mt. Sinai US Post Office

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

Rockville US Post Office

250 Merrick Road
Rockville Centre - 11570
(516) 766-5749

Riverhead US Post Office

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

Williston Park US Post Office

446 Willis Avenue
Williston Park - 11596
(516) 746-3247

Miller Placeace US Post Office

47 Echo Avenue
Miller Placeace - 11764
(631) 473-8134

Kings Point US Post Office

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