Lake in the Hills is a city located in Illinois. With a 2020 population of 28,525, it is the 70th largest city in Illinois and the 1344th largest city in the United States. Lake in the Hills is currently declining at a rate of -0.38% annually and its population has decreased by -1.52% since the most recent census, which recorded a population of 28,965 in 2010. Lake in the Hills reached it's highest population of 29,041 in 2012. Spanning over 10 miles, Lake in the Hills has a population density of 2,794 people per square mile.
The average household income in Lake in the Hills is $107,405 with a poverty rate of 5.75%. The median rental costs in recent years comes to $1,409 per month, and the median house value is $227,100. The median age in Lake in the Hills is 34.9 years, 33.8 years for males, and 35.6 years for females. For every 100 females there are 94.8 males.