High 96F. NE winds shifting to W at 10 to 15 mph. Evening: Partly cloudy. Low 63F. Winds SW at 5 to 10 mph.
Lemont is a village located in Cook, DuPage, and Will counties in the U.S. state of Illinois, and is a suburb of Chicago. The population was 16,000 as of the 2010 census. Lemont has a substantial immigrant population. Lemont is home to the CITGO Refinery, Argonne National Laboratory and other heavy industrial sites.
Lemont, Illinois. Homefacts City Report. Lemont is located in Cook County, IL. The population is 15,954. There are 4 public schools in Lemont with an average Homefacts rating of A. The total crime rate for Lemont is low, and there are 10 registered sex offenders residing in the city.