Kildeer is a city located in Illinois. With a 2020 population of 4,012, it is the 367th largest city in Illinois and the 5407th largest city in the United States . Kildeer is currently declining at a rate of 0.00% annually and its population has increased by 1.11% since the most recent census, which recorded a population of 3,968 in 2010. Kildeer reached it's highest population of 4,038 in 2016. Spanning over 4 miles, Kildeer has a population density of 948 people per square mile.
The average household income in Kildeer is $251,608 with a poverty rate of 3.95%. The median rental costs in recent years comes to - per month, and the median house value is $631,500. The median age in Kildeer is 44.5 years, 42.9 years for males, and 45.5 years for females.