Garden City US Post Office

830 Stewart Avenue
Garden City, NY 11599
Phone: (516) 228-7502
Fax: (516) 228-7555
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Shirely US Post Office

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

Jamesport US Post Office

70 2nd St
South Jamesport - 11970
(631) 722-4317

Brookhaven US Post Office

2512 Montauk Highway
Brookhaven - 11719
(631) 286-1591

Shelter Island US Post Office

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

Sagaponack US Post Office

542 Sagg Main St
Sagaponack - 11962
(631) 537-9346

Hewlett US Post Office

1245 Hewlett Placez
Hewlett - 11557
(516) 374-0973

Sag Harbor US Post Office

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

Mastic US Post Office

1450 Montauk Highway
Mastic - 11950
(631) 281-0275

Bayville US Post Office

251 Bayville Avenue
Bayville - 11709
(516) 628-9235

Riverhead US Post Office

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