Post Offices
Post Offices in & near Great River, New York. Operating hours, locations, phone/fax number, services information.
Great River Post Office
Post Office in Great River, New York on River Rd. Operating hours, phone number, services information, and other locations.
Address: 62 River Rd, Great River, NY 11739
Phone: 631-581-7680
Fax: 631-224-1375
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 9:00am - 5:00pmTuesday 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 4:30pmTuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 12:45pm
Sunday Closed
Last Collection Times
Monday 9:00am - 4:00pmTuesday 9:00am - 4:00pm
Wednesday 9:00am - 4:00pm
Thursday 9:00am - 4:00pm
Friday 9:00am - 4:00pm
Saturday Closed
Sunday Closed