3861 Smith St Union City, CA 94587
Phone: 510-471-1180
| Post Office Lobby Hours | |
|---|---|
| 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 |
Mailboxes in Union City
Postage Stamps in Union City
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Alvarado Post Office is a United States Postal Service (USPS) facility in Union City, CA. This post office offers a full array of services, including package delivery and first class mail.