Post Offices
Post Offices in & near Nortonville, California. Operating hours, locations, phone/fax number, services information.
Clayton Post Office
Post Office in Clayton, California on Center St. Operating hours, phone number, services information, and other locations.
Address: 6150 Center St, Clayton, CA 94517
Phone: 925-672-4337
Fax: 925-672-6170
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 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 10:00am - 3:00pmTuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
Saturday Closed
Sunday Closed
Atlantic Plaza Post Office
Address: 296 Atlantic Ave, Pittsburg, CA 94565
Phone: 925-432-2741
Fax: 925-432-9643
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Antioch Post Office
Address: 2730 W Tregallas Rd, Antioch, CA 94509
Phone: 925-757-0379
Fax: 925-778-8149
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Pittsburg Post Office
Address: 835 Railroad Ave, Pittsburg, CA 94565
Phone: 925-432-2741
Fax: 925-432-9643
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Rivertown Post Office
Address: 420 W 4th St, Antioch, CA 94509
Phone: 925-778-3578
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Casa Corr Post Office
Address: 4494 Treat Blvd, Concord, CA 94521
Phone: 925-687-0533
Fax: 925-874-8544
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Bay Poin Post Office
Address: 646 Port Chicago Hwy, Bay Point, CA 94565
Phone: 925-432-2741
Fax: 925-432-9643
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Ygnacio Valley Post Office
Address: 2244 Oak Grove Rd, Walnut Creek, CA 94598
Phone: 925-287-9267
Fax: 925-930-0445
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Todos San Post Office
Address: 2043 East St, Concord, CA 94520
Phone: 925-798-3849
Fax: 925-874-8544
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Diabl Post Office
Address: 1701 El Nido, Diablo, CA 94528
Phone: 925-837-3800
Fax: 925-837-3865
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Concord Post Office
Address: 2121 Meridian Park Blvd, Concord, CA 94520
Phone: 925-687-0533
Fax: 925-687-4193
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457