Pittsburg Post Office

835 Railroad Ave, Pittsburg, CA 94565

Contact Numbers

Phone: 925-432-2741
Fax: 925-432-9643
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 6:00am - 6:00pm
Tuesday 6:00am - 6:00pm
Wednesday 6:00am - 6:00pm
Thursday 6:00am - 6:00pm
Friday 6:00am - 6:00pm
Saturday 6:00am - 6:00pm
Sunday Closed

Last Collection Times

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

Passport Walk-In Hours

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

  • Visit our Passport FAQ page for a complete overview of what to bring, what you need to know, and how long it will take.
  • You will need two forms of Identification with copies.
  • A passport quality photo. Available at location.
  • The appropriate application form printed and filled out, and the required fee for applying or renewing.
  • You can find up to date costs, information, and forms at the State Departments Travel Site

Bulk Mail Acceptance Hours

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

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

Atlantic Plaza
296 Atlantic Ave
0.9 mile away

420 W 4th St
3.0 miles away

Bay Point
646 Port Chicago Hwy
3.1 miles away

2730 W Tregallas Rd
3.3 miles away


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Postal workers actually stole misplaced refused mail for box purchased nothing in box using my key. Complaint every week to Cherrie about problems not getting mail but she says you have mail only later get admission of massive gross error boxes mislabeled from inside caused ID theft horrific errors no accountability at this post office leave before they harm you! Returned our mail but unable to provide apology pay damages admitted was their fault! Hold people responsible get names tell the boss get DeSaulnier to fire all!


Mail service in this area is unprofessional. They steal (take mail from your mail box) if it gets full instead of leaving current mail for pick up. They put a hold on all your mail if you can't get to the mailbox in your apartment complex when you are a single mother working yourself to death in the city and are too tired to pick up mail in the pitch black dark late at night with your children. Too dangerous but do they care? NO!!!!


Someone broke into our mailbox on Caskey 800 block. Contact me please with results. Cheryl


Pittsburg Post Office at 835 Railroad Ave., mail carrier in Bay Point covering Gregory Drive didn't deliver our mails from June 23rd to July 11th were placed on Hold while We were on vacation. We're waiting from July 10 to 11 for our mails but, no mails came to our mail box. It's impossible that not even 1 mail got in or delivered. We usually received our mails if not daily, at least every other day. We suspected that our mails were taken from inside of the post office or were personally opened up for personal gain or access for financial reason.

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