Warrenville is a city located in Illinois. With a 2020 population of 13,044, it is the 185th largest city in Illinois and the 2559th largest city in the United States . Warrenville is currently declining at a rate of -0.50% annually and its population has decreased by -0.73% since the most recent census, which recorded a population of 13,140 in 2010. Warrenville reached it's highest population of 13,363 in 2000. Spanning over 6 miles, Warrenville has a population density of 2,396 people per square mile.
The average household income in Warrenville is $101,357 with a poverty rate of 8.07%. The median rental costs in recent years comes to $1,456 per month, and the median house value is $221,700. The median age in Warrenville is 37.9 years, 36.7 years for males, and 39.1 years for females.