Zip Code 91384 — Castaic, CA
91384 is a ZIP Code associated with Castaic, CA, located within Los Angeles. The postal region supports an estimated population of 26,478 residents across Data Pending housing units, with a population density of 98.7 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (34.516040, -118.672890)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 91384 |
| Primary City | Castaic |
| State / Province | CA |
| County | Los Angeles |
| Total Population | 26,478 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 98.7 people/sq mi |
| Timezone | America/Los_Angeles |
How 91384 Compares
| Metric | ZIP 91384 | Los Angeles County | CA State Average |
|---|
| Population | 26,478 | 9,807,501 | 39,286,245 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 98.7 /sq mi | -- | -- |
Nearby ZIP Codes
| ZIP Code | City | Distance | Population | Median Income |
|---|
| Zip 91354 | Valencia | 7.8 mi | 33,957 | N/A |
| Zip 91355 | Valencia | 8.1 mi | 29,123 | N/A |
| Zip 91381 | Stevenson Ranch | 10.4 mi | 22,582 | N/A |
| Zip 91350 | Santa Clarita | 11.4 mi | 43,973 | N/A |
| Zip 91351 | Canyon Country | 13.3 mi | 33,155 | N/A |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →