Castaic, CA ZIP codes

1 ZIP/ZCTA intersecting this Census place (CDP) in Los Angeles County.

ACS 2023 population

18,479

Median household income

$132,153

Median home value

$710,400

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Castaic (GEOID 0611796). Methodology

Combined population of ZIP/ZCTAs intersecting this place: 27,278 (1 ZIPs).

Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology

Map of Castaic, CA

Census place boundary and intersecting ZIP Code Tabulation Areas for Castaic, CA — Census place boundary for Castaic, CA. Intersecting ZCTAs may extend past the city limit. Not a USPS city limit. Boundaries: U.S. Census Bureau. Methodology · Data sources

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ZIP/ZCTA overlap with Castaic

Population overlap

Share of each ZIP/ZCTA’s population located within Castaic, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

9138466.2%
USPS primary city

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Castaic

ZIP	City	County	Population	Income
91384	Castaic	Los Angeles County	27,278	$129,603

USPS associates these ZIPs with Castaic

These codes list Castaic as a primary or acceptable city. They are not used for the ACS headline.

ZIP	City	County	Population	Income
91310	Castaic	Los Angeles County	270	—