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Brand Certified

United States Postal Service

3.0
(96 reviews)

Business Details

20283 Santa Maria Ave, Castro Valley, CA
94546, United States
(800) 275-8777
http://usps.com/postoffice

About

Post OfficeCargo ServiceLogistics ServiceShipping ServicePackaging Supply StoreMoney Order ServiceUnited States Postal Service
Visit your local Post Office™ at 20283 Santa Maria Ave to find everything you need to send mail and ship packages. Explore our other products and services like money orders, Post Office™ boxes, passports, gift cards, and more

Location

United States Postal Service
20283 Santa Maria Ave, Castro Valley, CA
94546, United States

Hours

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 5:00 PM
Saturday9:00 AM - 1:00 PM
SundayClosed

Reviews

3.0
96 reviews
5 stars
42
4 stars
4
3 stars
5
2 stars
4
1 star
41
  • RB
    Rhyan Beckford
    May 12, 2026
    1.0
    I’ve had serious issues with this post office. I had a P.O. Box there for several years, and after moving I submitted a change of address so my mail would be forwarded to my new address. However, the mail was not being forwarded consistently — it was hit or miss — so I ended up having to drive three hours to the post office just to pick up my mail. Then, for some reason, my P.O. Box payment didn’t get processed, and I was unable to renew it online. After weeks of trying to resolve the issue online or over the phone — without having to make another three‑hour drive — I was finally contacted and told that my P.O. Box had been claimed by a new owner. I’m very disappointed with how this situation played out. The whole experience has been a major inconvenience, and now I have to submit another change of address, hoping it will work this time, though I have little faith in the process.
  • AB
    Amanda Bartley
    Mar 4, 2026
    5.0
    Ok so update. Although I didn't get a call the driver came back and showed a worker where they left the package. I definitely got my delivery thank you so much for going out the way to come back.
  • JJ
    John
    Feb 9, 2026
    5.0
    This is hands down the best USPS location in the East Bay, in my opinion. I’ve visited multiple locations in the area, and this one stands out. The manager here is actually involved — both with the staff and with customers. At other USPS locations I’ve visited, it’s nearly impossible to get support from a manager. But at the Castro Valley branch, the manager was on site and actively helping. I was able to get everything I needed taken care of smoothly. Overall, it was a great experience. I’ll definitely be coming back here for any future shipping needs.
  • MS
    maria segundo
    Jan 13, 2026
    1.0
    Estoy muy molesta enojada hace 3 meses me dejaron un paquete abierto pero cerrado con tape le sacaron prendas solo dejaron una sola y fue tanto papeleo requisitos para q me rembolsaran mi dinero q lo perdi al final ...ahora este dia lo volvieron a hacer pedi q pesaran mi paquete y resulta q le faltaban 6 libras otra ves al parecer abren las bolsas y cierran con tape porq las veces q me ha pasado se nota q no es roto por maquina si no q el corte se ve hecho por tijera o algo preciso dejo la foto para q vean ojala hagan cambios y miren bien el personal que tienen haciendo mal el servicio... porque no hacen nada para que esto no pase... yo ya no pedire nada por correo ya no confio en el servicio. Muy mal ...
  • KK
    KK
    Dec 29, 2025
    4.0
    🙂

Frequently Asked Questions About United States Postal Service

Can I get a passport application at this Post Office?

Yes, Thousands of Post Offices™ accept first-time passport applications for the U.S. Department of State. Most of those locations can also take your passport photo. Please complete and print your passport application form before you apply.

Is an appointment needed for passport services?

Most Post Offices that offer passport services have set hours, and you'll need to schedule an appointment using our online scheduler. We also offer limited Passport walk-in hours at select locations.

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