New Lenox is a city located in Will County Illinois. New Lenox has a 2020 population of 43,048. New Lenox is currently growing at a rate of 0.29% annually and its population has increased by 6.69% since the most recent census, which recorded a population of 40,348 in 2010. New Lenox reached it's highest population of 43,048 in 2021.
The average household income in New Lenox is $128,185 with a poverty rate of 2.61%. The median rental costs in recent years comes to $1,197 per month, and the median house value is $291,100. The median age in New Lenox is 38.7 years, 37.1 years for males, and 40.4 years for females.