Castaic is a city located in California. Castaic has a 2020 population of 19,400. Castaic is currently declining at a rate of 0.00% annually and its population has increased by 2.02% since the most recent census, which recorded a population of 19,015 in 2010. Castaic reached it's highest population of 19,529 in 2016.
The average household income in Castaic is $130,197 with a poverty rate of 4.05%. The median rental costs in recent years comes to $1,745 per month, and the median house value is $553,600. The median age in Castaic is 37.4 years, 36.3 years for males, and 39.1 years for females. For every 100 females there are 97.4 males.