Castaic zipcode
| City | Castaic |
| ZIP Code | 91384 |
| Type | Standard |
| State Code | CA |
| State | California |
ZIP code of Castaic is 91384. This place is located in California state in US. To send any postal service to Castaic, you must use 91384 zipcode.
The ZIP code 91384 is also used with 2 more city names of California.
- Santa Clarita, CA
- Val Verde, CA