Castro Valley California is covered by a total of 2 ZIP Codes. There are also 2 ZIP Codes that overlap Castro Valley but have a different postal city name. The ZIP Codes in Castro Valley range from 94546 to 94578. Of the ZIP codes within or partially within Castro Valley there are 2 Standard ZIP Codes. The total population of ZIP Codes in Castro Valley is 60709.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Castro Valley and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Castro Valley | Standard | |||
| Castro Valley | Standard | |||
| San Leandro | Standard | |||
| San Leandro | Standard |