ZIP code · Castaic · California · United States
ZIP code 91384 — Castaic
ZIP code 91384 serves Castaic, California.
- Postal code
- 91384Single source Value from one source, not cross-checked.
- City
- Castaic
- County
- Los Angeles
- State
- California
- Country
- United States
- Coordinates
- 34.4827, -118.6254 — precision precise (locality)
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Nearby localities
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames. Data generated on 2026-08-21. Methodology · Report an error on this page