Post Offices

Post Offices in & near Antioch, California. Operating hours, locations, phone/fax number, services information.

Antioch Post Office

Post Office in Antioch, California on W Tregallas Rd. Operating hours, phone number, services information, and other locations.

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

Retail Hours

Monday 8:30am - 5:00pm
Tuesday 8:30am - 5:00pm
Wednesday 8:30am - 5:00pm
Thursday 8:30am - 5:00pm
Friday 8:30am - 5:00pm
Saturday 9:30am - 2:00pm
Sunday Closed

Lobby Hours

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 5:00pm
Sunday Closed

Last Collection Times

Monday 10:00am - 3:00pm
Tuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
Saturday Closed
Sunday Closed

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

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

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

Oakley Post Office

Address: 400 Del Antico Ave, Oakley, CA 94561
Phone: 925-625-5687
Fax: 925-625-7523
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Brentwood Post Office

Address: 18 Oak St, Brentwood, CA 94513
Phone: 925-240-2065
Fax: 925-513-6680
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457