Castaic zipcode
| City | Castaic |
| ZIP Code | 91310 |
| Type | PO Box |
| State Code | CA |
| State | California |
ZIP code of Castaic is 91310. This place is located in California state in US. To send any postal service to Castaic, you must use 91310 zipcode.
The ZIP code 91310 is also used with 1 more city name of California.
- Santa Clarita, CA