Post Offices

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

Brentwood Post Office

Post Office in Brentwood, California on Oak St. Operating hours, phone number, services information, and other locations.

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

Retail Hours

Monday 9:00am - 5:00pm
Tuesday 9:00am - 5:00pm
Wednesday 9:00am - 5:00pm
Thursday 9:00am - 5:00pm
Friday 9:00am - 5:00pm
Saturday 10:00am - 1:00pm
Sunday Closed

Lobby Hours

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 4:00pm
Sunday Closed

Last Collection Times

Monday 9:00am - 3:00pm
Tuesday 9:00am - 3:00pm
Wednesday 9:00am - 3:00pm
Thursday 9:00am - 3:00pm
Friday 9:00am - 3:00pm
Saturday Closed
Sunday Closed

Knightsen Post Office

Address: 3019 Knightsen Ave, Knightsen, CA 94548
Phone: 925-625-2724
Fax: 925-625-2016
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

Byron Post Office

Address: 3852 Main St, Byron, CA 94514
Phone: 925-634-2600
Fax: 925-634-2831
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Byron Ca Discovery Bay Post Office

Address: 3345 Bixler Rd, Discovery Bay, CA 94505
Phone: 925-634-1164
Fax: 925-634-1468
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Bethel Island Post Office

Address: 6444 Bethel Island Rd, Bethel Island, CA 94511
Phone: 925-684-2561
Fax: 651-456-6355
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457