Bay Shore US Post Office

10 Bay Shore Avenue
Bay Shore, NY 11706
Phone: (631) 969-3506
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Baldwin US Post Office

2260 Grand Avenue
Baldwin - 11510
(516) 223-5024

Commack US Post Office

150 Veterans Memorial Highway
Commack - 11725
(631) 543-3647

Ridge US Post Office

1700 Middle Country Road
Ridge - 11961
(631) 345-6842

Riverhead US Post Office

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

New Suffolk US Post Office

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

Port Jefferson Station US Post Office

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

New Hyde Park US Post Office

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

Southold US Post Office

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

Sag Harbor US Post Office

21 Long Island Avenue
Sag Harbor - 11963
(631) 725-8968

Smithtown US Post Office

25 Route 111
Smithtown - 11787
(631) 360-6709