Post Offices

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

Stony Brook Post Office

Post Office in Stony Brook, New York on Main St. Operating hours, phone number, services information, and other locations.

Address: 129 Main St, Stony Brook, NY 11790
Phone: 631-751-5691
Fax: 631-246-8241
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 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 1:00pm
Sunday Closed

Last Collection Times

Monday 10:00am - 3:00pm
Tuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
Saturday 9:30am - 12:30pm
Sunday Closed

East Setauk Post Office

Address: 450 Route 25a, East Setauket, NY 11733
Phone: 631-941-4005
Fax: 631-689-2173
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Setauk Post Office

Address: 101 Main St, Setauket, NY 11733
Phone: 631-941-4042
Fax: 631-689-2173
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Saint Jam Post Office

Address: 325 Lake Ave, Saint James, NY 11780
Phone: 631-584-4138
Fax: 631-862-0631
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Port Jefferson Post Office

Address: 407 E Main St Ste 17, Port Jefferson, NY 11777
Phone: 631-473-1065
Fax: 631-928-4632
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Port Jefferson Station Post Office

Address: 544 Jefferson Plz, Port Jefferson Station, NY 11776
Phone: 631-473-2751
Fax: 631-474-9769
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457