Castaic, CA
Population 18,479 · California
About Castaic, CA
Castaic is a mid-sized city in California with a population of 18,479 residents. The median household income is $132,153 per year, which is above the national average. The median age in Castaic is 37.2 years.
Housing in Castaic has a median home value of $710,400 and median monthly rent of $1,751. Of the 5,869 total housing units, the majority are owner-occupied, with 4,910 owner-occupied and 906 renter-occupied units.
The unemployment rate in Castaic is 5.1% and the poverty rate is 4.0%. 41.4% of residents hold a bachelor's degree or higher. The average commute time is 31.1 minutes.
Cost of Living in Castaic, CA
Compared to national averages, Castaic has a median household income of $132,153 (76% above the national median of $75,149). Home values average $710,400, which is 190% above the national median. Monthly rent at $1,751 is 51% above the US average of $1,163. Within California, Castaic's income is 35% above the state average of $97,829, and home values are 9% above the state median of $653,874.
Why Live in Castaic, CA?
Castaic offers a strong local economy with a median household income of $132,153, well above the national average, and a well-educated community where 41.4% of residents hold a bachelor’s degree or higher, and a low poverty rate of 4.0%, better than the national average.
Potential considerations include a competitive housing market where the typical home costs $710,400. However, Castaic’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Castaic has a population of 18,479 with a median age of 37.2 years. Compare Castaic with other cities to see how it stacks up, or explore all cities in California.
Similar Cities Near Castaic
Cities in California with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Arroyo Grande | 18,412 | $103,258 | $758,100 | Compare |
| Coronado | 18,558 | $135,056 | $1,998,900 | Compare |
| Arcata | 18,578 | $48,731 | $466,600 | Compare |
| Pinole | 18,835 | $120,833 | $697,100 | Compare |
| Chowchilla | 18,876 | $63,308 | $331,500 | Compare |
| Phelan | 18,059 | $83,759 | $357,200 | Compare |
| Stanford | 17,958 | $70,651 | $2,000,001 | Compare |
| Olivehurst | 19,071 | $80,477 | $337,300 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in California
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Castaic
What is the population of Castaic, CA?
The population of Castaic, CA is 18,479 according to the latest Census data.
What is the median household income in Castaic?
The median household income in Castaic, CA is $132,153 per year.
What is the median home value in Castaic?
The median home value in Castaic, CA is $710,400.
What is the average rent in Castaic?
The median monthly rent in Castaic, CA is $1,751.
What is the unemployment rate in Castaic?
The unemployment rate in Castaic, CA is 5.1%.