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Postal Alvarado Post Office
3861 Smith St, Union City, CA 94587
Phone: 510-471-1180
Fax: 510-471-0306
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)
PO Box Access Available
Monday 9:30am - 4:30pm
Tuesday 9:30am - 4:30pm
Wednesday 9:30am - 4:30pm
Thursday 9:30am - 4:30pm
Friday 9:30am - 4:30pm
Saturday Closed
Sunday Closed
Monday 4:00pm
Tuesday 4:00pm
Wednesday 4:00pm
Thursday 4:00pm
Friday 4:00pm
Saturday 4:00pm
Sunday Closed
*This facility does not process US Passports applications or renewals. Check nearby locations below.
- Business Line
- Packaged Stamps
- Pickup Accountable Mail
- Pickup Hold Mail
- PO Box Online
- Street Parking
Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.
*Please call to verify information. Is anything incorrect? Let us know here
Nearby Post Offices:
Union City
33170 Alvarado Niles Rd
1.5 miles away
Mount Eden
2163 Aldengate Way
1.7 miles away
Hayward
24438 Santa Clara St
2.5 miles away
Hayward Ca Sdc
24438 Santa Clara St
2.5 miles away
Alameda County
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