Post Offices

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

Sayvill Post Office

Post Office in Sayville, New York on Greene Ave. Operating hours, phone number, services information, and other locations.

Address: 130 Greene Ave, Sayville, NY 11782
Phone: 631-589-6963
Fax: 631-589-4571
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 - 2:00pm
Sunday Closed

Lobby Hours

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 3:00pm
Sunday Closed

Last Collection Times

Monday 9:30am - 2:30pm
Tuesday 9:30am - 2:30pm
Wednesday 9:30am - 2:30pm
Thursday 9:30am - 2:30pm
Friday 9:30am - 2:30pm
Saturday Closed
Sunday Closed