Castro Valley, CA is in zip code 94546. The current total local sales tax rate in Castro Valley, CA is 10.250%. The 2020 total local sales tax rate was 9.250%.
| District | Rate |
|---|---|
| California State | 7.250% |
| Alameda County | 3.000% |
| Castro Valley | 0.000% |
| Total | 10.250% |