Mark D.
6/4/2025
Hello my name is Mark Davis I have had a po box for over 10years this Castro valley branch is the best customer service, very friendly staff especially RUBY her service is OUTSTANDING, always...
US Post Office
Open
(134)
Photos
20283 Santa Maria Ave
Castro Valley, CA 94546
The US Post Office in Castro Valley, CA serves as a key hub for postal services in the area. Visitors can access a range of tools and resources to manage their mail and shipping needs efficiently. From tracking packages to purchasing stamps, the facility offers essential services to individuals and businesses alike.
Customers can take advantage of services such as holding mail, changing addresses, and renting PO boxes. The post office also provides information on shipping options, postal rates, and international mailing services. Whether sending a letter locally or shipping a package internationally, the US Post Office is equipped to assist with various mailing requirements.
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Reviews
2.0134 reviews
Angela L.
8/25/2025
Only go there if you have an hour to kill Slowest post office workers ever I don't think they even care
Ramona H.
4/12/2025
Ms Shirley on a Saturday afternoon when the post office was slam busy delivered exceptional customer service. She was informational, personable and all around an awesome employee and individual....
Lorena G.
9/18/2025
I had a frustrating experience at this location today and felt it was important to share. I went in to send out a letter via Priority Mail (overnight or second day), as I've done many times...
Kristian M.
8/16/2025
People steal mail here , avoid at all cost! Sent a box , and the item that was received was ripped open.
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