Northlake is a city located in Illinois. With a 2020 population of 12,055, it is the 200th largest city in Illinois and the 2715th largest city in the United States . Northlake is currently declining at a rate of -0.44% annually and its population has decreased by -2.17% since the most recent census, which recorded a population of 12,323 in 2010. Northlake reached it's highest population of 14,191 in 1970. Spanning over 3 miles, Northlake has a population density of 3,801 people per square mile.
The average household income in Northlake is $67,355 with a poverty rate of 16.28%. The median rental costs in recent years comes to $958 per month, and the median house value is $181,700. The median age in Northlake is 37 years, 35.7 years for males, and 40 years for females.