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.
To the south, the northern part of Will County and a small part of southern Cook County, including the village of Burr Ridge and parts of the village of Lemont, are also included in the 630 and 331 area codes. To the southwest, the city of Yorkville, in exurban Kendall County, is included, as well.he main area code, 630 was split off from area code 708 on August 3, 1996. Within a decade, 630 was close to exhaustion due to the explosive growth of the Chicago suburbs and the proliferation of cell phones and pagers.