Brand Certified
United States Postal Service
3.7(34 reviews)
Certified by United States Postal Service • Aug 16, 2026
Business Details
3861 Smith St, Union City, CA
94587, United States
Certified by United States Postal Service • Aug 16, 2026
(800) 275-8777
Certified by United States Postal Service • Aug 16, 2026
http://usps.com/postoffice
Certified by United States Postal Service • Aug 16, 2026
About
Certified by United States Postal Service • Aug 16, 2026
Post OfficeCargo ServiceLogistics ServiceShipping ServicePackaging Supply StoreMoney Order ServiceUnited States Postal 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
Certified by United States Postal Service • Aug 16, 2026
Hours
Certified by United States Postal Service • Aug 16, 2026
Monday9:30 AM - 1:00 PM2:00 PM - 4:30 PM
Tuesday9:30 AM - 1:00 PM2:00 PM - 4:30 PM
Wednesday9:30 AM - 1:00 PM2:00 PM - 4:30 PM
Thursday9:30 AM - 1:00 PM2:00 PM - 4:30 PM
Friday9:30 AM - 1:00 PM2:00 PM - 4:30 PM
SaturdayClosed
SundayClosed
Products & Services
1 list · 15 items
Reviews
3.7
34 reviews
5 stars
20
4 stars
3
3 stars0
2 stars
2
1 star
9
- VTVivian TungAug 3, 20265.0Been going to this location for a long time! Zoraida is always pleasant, professional and very helpful! She deserves recognition!
- KYK. Y.Apr 13, 20265.0Great service here, very thorough, informative, and helpful. I have never sent mail before… guy here was extremely helpful and didn’t make it complicated like I was worried it would be.
- A超级大柠檬Sep 8, 20235.0A veeeeeeery nice woman works here, she helps us a lot! I am so much appreciated her!
- VTV TApr 30, 20215.0Lena made everything easier and has a nice tone when explaining.
- LZLei ZhaoMar 3, 20175.0Nice usps officer
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.
Does this location take the photo needed for passports?
For first-time passport and photo services, please make an appointment using our online scheduler.
What is the cost to take a passport photo?
The current fee for a passport photo at USPS is $15.
When does this location do walk-in passports?
We offer limited Passport walk-in hours at select locations.
Can I get a PO Box online?
Yes, you can search for available PO Boxes and reserve one online at https://www.usps.com/manage/po-boxes.htm. The process is quick and secure, and you'll receive instructions for completing your setup in person.
How much is a small PO Box?
PO Box prices vary by location. You can check exact pricing for your area by visiting https://www.usps.com/manage/po-boxes.htm and entering your ZIP Code.
Can you get to the PO Boxes in the lobby after hours?
Most USPS locations offer 24/7 access to PO Boxes in the lobby. Access hours may vary by location, so check with your local Post Office for specific lobby hours.
How can I get a PO Box?
You can apply for a PO Box online or in person at your local Post Office. Just bring two valid forms of ID and your completed application if applying in person. To start online, visit https://www.usps.com/manage/po-boxes.htm.
What time can I check my PO Box weekly and on weekends?
You can check your PO Box during lobby hours, which often include extended hours or 24/7 access. Weekend access may vary. Check with your local Post Office for exact times.
What services are offered at the United States Postal Service location at 3861 Smith St?
This Post Office offers mailing and shipping services, money orders, PO Boxes, passports, gift cards, and more.
Can I apply for a first-time passport at this Post Office?
Yes, this location accepts first-time passport applications and can assist with passport photos by appointment.
Do I need an appointment for passport services here?
Most passport services require an appointment, which can be scheduled online, but some limited walk-in hours may be available.
What are the operating hours for this Post Office?
The Post Office is open Monday through Friday from 9:30 AM to 1:00 PM and 2:00 PM to 4:30 PM, and closed on weekends.
Can I rent a PO Box at this location?
Yes, you can apply for a PO Box online or in person, and receive instructions for setup at this Post Office.
Is there 24/7 access to PO Boxes at this location?
Most USPS locations offer 24/7 lobby access to PO Boxes, but access hours may vary; please check with the local Post Office.
What nearby places can I visit before or after my visit to the Post Office?
Nearby attractions include the Union City Historical Museum for local history and Old Alvarado Park for outdoor relaxation.
Are there dining options near the Post Office at 3861 Smith St?
Yes, you can find nearby places like The Burger Shop, L'Aziz Pizza + Eatery, and Paddy's Coffee House for a meal or coffee.
Where can I find health and wellness services near the Post Office?
Nearby options include ABC Dental, Sanding Dental, and Worlds Yoga Union City for dental and fitness needs.
How can I schedule an appointment for passport photos at this location?
You can schedule passport photo appointments using the USPS online scheduler provided on their official website.
Brand Certified Facts from United States Postal Service
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Certified August 16, 2026Yext Knowledge Graph
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