Clarendon Hills is a city located in Illinois. With a 2020 population of 8,714, it is the 240th largest city in Illinois and the 3399th largest city in the United States . Clarendon Hills is currently declining at a rate of -0.22% annually but its population has increased by 3.41% since the most recent census, which recorded a population of 8,427 in 2010. Clarendon Hills reached it's highest population of 8,771 in 2018. Spanning over 2 miles, Clarendon Hills has a population density of 4,852 people per square mile.
The average household income in Clarendon Hills is $192,865 with a poverty rate of 4.21%. The median rental costs in recent years comes to $978 per month, and the median house value is $506,400. The median age in Clarendon Hills is 38.3 years, 37.1 years for males, and 40.7 years for females.