Find the last 4 digits (ZIP+4) for an address in 91384

ZIP 91384, Castaic, CA is filled in. Just type the street address.

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ZIP Code 91384 – Castaic, CA

Castaic, California · Los Angeles County · Pacific time

ZIP code91384
CityCastaic
StateCalifornia
CountyLos Angeles County
Population26,478
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area103.6 sq mi
Center (lat, long)34.5201, -118.6683

Area codes in this area

661

These are the area codes that most often serve ZIP 91384 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

91310 Castaic · 3.4 mi91385 Valencia · 6.2 mi91354 Valencia · 7.8 mi91355 Valencia · 9.9 mi91381 Stevenson Ranch · 10.7 mi91390 Santa Clarita · 10.7 mi91350 Santa Clarita · 11.3 mi91380 Santa Clarita · 11.4 mi

About ZIP 91384

ZIP code 91384 is assigned to Castaic, California. It lies in Los Angeles County. Its Census area covers about 103.6 square miles of land. The closest neighboring ZIP is 91310 (Castaic), about 3.4 miles away.

Every address in 91384 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources