Post Offices and USPS-authorized retailers where postage stamps are sold in Castro Valley, CA.
All the locations below sell USPS postage stamps which can be used to mail First Class letters in the United States. We list both official post offices run by the United States Postal Service and retailers which have been authorized by USPS to sell postal products in Castro Valley.
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Get a 4 week trial| Post Office Name | City/State | Address | Phone Number | Action |
|---|---|---|---|---|
| Castro Valley Post Office | CASTRO VALLEY, CA 94546 | 20283 Santa Maria Ave | 5105810159 | View Details Get Directions |
| Cvs | CASTRO VALLEY, CA 94546 | 3667 Castro Valley Blvd | -- | Get Directions |
| Safeway | CASTRO VALLEY, CA 94546 | 20629 Redwood Rd | -- | Get Directions |
| Safeway | CASTRO VALLEY, CA 94552 | 4015 E Castro Valley Blvd | -- | Get Directions |
| City | No. of Mailboxes | UPS Mailboxes |
|---|---|---|
| SAN LEANDRO, CA | 77 | 18 |
| HAYWARD, CA | 65 | 13 |
| SAN RAMON, CA | 59 | 10 |
| ALAMEDA, CA | 55 | 15 |
| DANVILLE, CA | 32 | 7 |
| UNION CITY, CA | 25 | 4 |
| DUBLIN, CA | 16 | 5 |
| MORAGA, CA | 14 | 4 |
| SAN LORENZO, CA | 13 | 1 |
| ALAMO, CA | 9 | 3 |