Lake Barrington is a city located in Illinois. With a 2020 population of 4,866, it is the 334th largest city in Illinois and the 4838th largest city in the United States . Lake Barrington is currently declining at a rate of -0.02% annually and its population has decreased by -2.15% since the most recent census, which recorded a population of 4,973 in 2010. Lake Barrington reached it's highest population of 4,959 in 2010. Spanning over 6 miles, Lake Barrington has a population density of 848 people per square mile.
The average household income in Lake Barrington is $156,997 with a poverty rate of 5.14%. The median rental costs in recent years comes to $1,389 per month, and the median house value is $379,700. The median age in Lake Barrington is 56.1 years, 53.8 years for males, and 57.7 years for females.