Post Offices
Post Offices in & near Northampton, New York. Operating hours, locations, phone/fax number, services information.
Riverhead Post Office
Post Office in Riverhead, New York on W Main St. Operating hours, phone number, services information, and other locations.
Address: 1210 W Main St, Riverhead, NY 11901
Phone: 631-727-1019
Fax: 631-208-0951
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 8:30am - 6:00pmTuesday 8:30am - 6:00pm
Wednesday 8:30am - 6:00pm
Thursday 8:30am - 6:00pm
Friday 8:30am - 6:00pm
Saturday 9:00am - 2:00pm
Sunday Closed
Lobby Hours
Monday 6:00pmTuesday 6:00pm
Wednesday 6:00pm
Thursday 6:00pm
Friday 6:00pm
Saturday 3:00pm
Sunday Closed
Last Collection Times
Monday 10:00am - 4:00pmTuesday 10:00am - 4:00pm
Wednesday 10:00am - 4:00pm
Thursday 10:00am - 4:00pm
Friday 10:00am - 4:00pm
Saturday 10:00am - 2:00pm
Sunday Closed