Lemont, Illinois

Lemont, Illinois
Budnik Plaza clock and Stephen Street facades in historic downtown Lemont
Etymology: From French for "The Mount"
Motto(s): 
Village of Faith, Enjoy Our Scene!
Location of Lemont in DuPage County, Illinois
Coordinates: 41°40′04″N 88°00′12″W / 41.66778°N 88.00333°W / 41.66778; -88.00333
CountryUnited States
StateIllinois
CountyCook, Will, and DuPage
TownshipLemont, Downers Grove, DuPage, Homer
Settled1836
IncorporatedJune 9, 1873
Government
 • MayorJohn Egofske
Area
 • Total
8.74 sq mi (22.64 km2)
 • Land8.37 sq mi (21.67 km2)
 • Water0.37 sq mi (0.97 km2)
Elevation
738 ft (225 m)
Population
 (2020)
 • Total
17,629
 • Density2,107/sq mi (813.7/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP codes
60439, 60490
Area codes630/331
FIPS code17-42795
GNIS feature ID2398417
Websitelemont.il.us

Lemont is a village located in Cook, DuPage, and Will counties in the U.S. state of Illinois, and is a south-west suburb of Chicago. The population was 17,629 as of the 2020 census. The village is situated on a hillside along the south banks of the Des Plaines River. It overlooks Waterfall Glen's Midwestern Bluff Savanna on the opposite side. Lemont is home to Argonne National Laboratory and other heavy industrial sites, and has a substantial European immigrant population.