Post Offices
Post Offices in & near Newark, California. Operating hours, locations, phone/fax number, services information.
Newark Post Office
Post Office in Newark, California on Clark Ave. Operating hours, phone number, services information, and other locations.
Address: 6655 Clark Ave, Newark, CA 94560
Phone: 510-797-0903
Fax: 510-797-9315
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 8:30am - 5:00pmTuesday 8:30am - 5:00pm
Wednesday 8:30am - 5:00pm
Thursday 8:30am - 5:00pm
Friday 8:30am - 5:00pm
Saturday 10:00am - 2:00pm
Sunday Closed
Lobby Hours
Monday 5:00pmTuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 5:00pm
Sunday Closed
Last Collection Times
Monday 9:00am - 2:00pmTuesday 9:00am - 2:00pm
Wednesday 9:00am - 2:00pm
Thursday 9:00am - 2:00pm
Friday 9:00am - 2:00pm
Saturday 10:00am - 2:00pm
Sunday Closed