Thornton is a village in Cook County, Illinois, United States, and a south suburb of Chicago. The population was 2,386 at the 2020 census. Thornton is home to the Thornton Quarry, one of the largest quarries in the world.
Geography
Thornton is located at (41.571484, -87.611743).
According to the 2021 census gazetteer files, Thornton has a total area of , of which (or 98.92%) is land and (or 1.08%) is water.