Southold US Post Office

710 Traveler St
Southold, NY 11971
Phone: (631) 765-4027
Fax: (631) 360-0532
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Sea Cliff US Post Office

200 Sea Cliff Avenue
Sea Cliff - 11579
(516) 671-8258

Jamesport US Post Office

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

Upton US Post Office

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

Elmont US Post Office

798 Meacham Avenue
Elmont - 11003
(516) 887-6247

Port Jefferson Station US Post Office

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

Shirely US Post Office

800 Montauk Highway # 1
Shirley - 11967
(631) 281-0479

West Babylon US Post Office

385 Route 109
West Babylon - 11704
(631) 893-0560

Shelter Island US Post Office

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

St. James US Post Office

325 Lake Avenue
St James - 11780
(631) 584-4138

Port Washington US Post Office

1051 Port Washington Blvd
Port Washington - 11050
(516) 883-0754