Mundelein is a city located in Illinois. With a 2020 population of 30,919, it is the 61st largest city in Illinois and the 1256th largest city in the United States. Mundelein is currently declining at a rate of -0.43% annually and its population has decreased by -0.47% since the most recent census, which recorded a population of 31,064 in 2010. Mundelein reached it's highest population of 31,476 in 2015. Spanning over 10 miles, Mundelein has a population density of 3,243 people per square mile.
The average household income in Mundelein is $110,088 with a poverty rate of 5.03%. The median rental costs in recent years comes to $1,418 per month, and the median house value is $237,500. The median age in Mundelein is 37.2 years, 36.1 years for males, and 38.3 years for females. For every 100 females there are 102.8 males.