Post Offices
Post Offices in & near Cooper, California. Operating hours, locations, phone/fax number, services information.
Upper Lak Post Office
Post Office in Upper Lake, California on Main St. Operating hours, phone number, services information, and other locations.
Address: 9435 Main St, Upper Lake, CA 95485
Phone: 707-275-2426
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
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
Lobby Hours
Monday 4:00pmTuesday 4:00pm
Wednesday 4:00pm
Thursday 4:00pm
Friday 4:00pm
Saturday 10:00am
Sunday Closed
Last Collection Times
Monday 9:00am - 3:00pmTuesday 9:00am - 3:00pm
Wednesday 9:00am - 3:00pm
Thursday 9:00am - 3:00pm
Friday 9:00am - 3:00pm
Saturday Closed
Sunday Closed