Alvarado Post Office

3861 Smith St, Union City, CA 94587

Contact Numbers

Phone: 510-471-1180
Fax: 510-471-0306
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Lobby Hours
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

Last Collection Times

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

Bradford
822 C St
3.0 miles away

Reviews

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Tracking number 9400108205496010154706 Shown delivered on 12/14/20 6:08pm in my mail box. I check immediately was nothing in my mail box. Next day office said they don't have it. Please check my package.
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