Post Office in Contra Costa County, CA

Clayton Post Office
Clayton Post Office

6150 Center Street, Contra Costa County, CA 94517

925-672-4337

Court Post Office
Court Post Office

815 Court Street, Contra Costa County, CA 94553

925-229-4795

Oakley Post Office
Oakley Post Office

400 Del Antico Avenue, Contra Costa County, CA 94561

925-625-5687

Pittsburg Post Office
Pittsburg Post Office

835 Railroad Avenue, Contra Costa County, CA 94565

925-432-2741

Q&A

1. What services do post offices in the U.S. provide?

unfold fold
U.S. post offices offer a variety of services including mailing and shipping, passport applications, P.O. Box rentals, money orders, and more.

2. How can I track my mail or package?

unfold fold
You can track your mail or package using the tracking number provided at the time of shipment. Enter this number on the USPS website or app to see current delivery status.

3. What are the typical operating hours for a U.S. post office?

unfold fold
Most post offices open from 9 AM to 5 PM on weekdays, with limited hours on Saturdays. However, hours can vary by location, so it’s best to check the specific branch.

4. How do I change my address with the USPS?

unfold fold
You can change your address online through the USPS website or by filling out a change of address form at your local post office.

5. What should I do if my mail is lost or delayed?

unfold fold
First, check the tracking status. If there are issues, you can file a claim or request assistance online or at your local post office.

Favorites

Here is a brief description text of the drawer.