Post Offices

Post Offices in & near Syosset, New York. Operating hours, locations, phone/fax number, services information.

Sy Post Office

Post Office in Syosset, New York on Queens St. Operating hours, phone number, services information, and other locations.

Address: 40 Queens St, Syosset, NY 11791
Phone: 516-921-1921
Fax: 516-496-4736
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 9:00am - 5:00pm
Tuesday 9:00am - 5:00pm
Wednesday 9:00am - 5:00pm
Thursday 9:00am - 5:00pm
Friday 9:00am - 5:00pm
Saturday 9:00am - 1:00pm
Sunday Closed

Lobby Hours

Monday 6:15pm
Tuesday 6:15pm
Wednesday 6:15pm
Thursday 6:15pm
Friday 6:15pm
Saturday 3:45pm
Sunday Closed

Last Collection Times

Monday 9:45am - 3:45pm
Tuesday 9:45am - 3:45pm
Wednesday 9:45am - 3:45pm
Thursday 9:45am - 3:45pm
Friday 9:45am - 3:45pm
Saturday 9:45am - 12:30pm
Sunday Closed