Castle Hills is a city located in Texas. With a 2020 population of 4,480, it is the 396th largest city in Texas and the 5084th largest city in the United States . Castle Hills is currently growing at a rate of 0.11% annually and its population has increased by 8.84% since the most recent census, which recorded a population of 4,116 in 2010. Castle Hills reached it's highest population of 5,311 in 1970. Spanning over 2 miles, Castle Hills has a population density of 1,814 people per square mile.
The average household income in Castle Hills is $151,562 with a poverty rate of 8.51%. The median rental costs in recent years comes to $941 per month, and the median house value is $298,200. The median age in Castle Hills is 46.8 years, 44.9 years for males, and 48.5 years for females.