United States Postal Service

3.7
29 reviews

About

Post OfficeCargo ServiceLogistics ServiceShipping ServicePackaging Supply StoreMoney Order Service
Visit your local Post Office™ at 3861 Smith St 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
3861 Smith St, Union City, CA
94587, United States

Hours

Reviews

3.7
29 reviews
5 stars
17
4 stars
3
3 stars
0
2 stars
2
1 star
7
  • LL
    larry lin
    Aug 20, 2025
    5.0
    Gotta watch out for the lunch hours
  • EG
    Evangeline Guilalas
    Aug 11, 2025
    5.0
    I’m from Hayward but I always come here. Customer service is superb! Excellent service! Both the ladies(maybe Filipino) are very kind, courteous and know their craft. Makes my transaction easier and not stressful even the line is long.
  • BL
    Be Inspired By Life
    Jul 14, 2015
    1.0
    This post office is the worst. The line is always out the door. Only one woman always working by herself. She's a sweetheart but if you have 30-45 mins to wait in line, go elsewhere.

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.