La Grange, a suburb of Chicago, is a village in Cook County, in the U.S. state of Illinois. The population was 15,608 at the 2000 census. The name La Grange is French for "the barn".

As of the census of 2000, there were 15,608 people, 5,624 households, and 4,049 families residing in the village. The population density was 6,220.7 people per square mile (2,400.9/km²). There were 5,781 housing units at an average density of 2,304.1/sq mi (889.3/km²). The racial makeup of the village was 91.02% White, 6.02% African American, 0.09% Native American, 1.00% Asian, 0.02% Pacific Islander, 0.99% from other races, and 0.86% from two or more races. Hispanic or Latino of any race were 3.66% of the population.

The median income for a household in the village was $80,342, and the median income for a family was $95,554. Males had a median income of $62,030 versus $41,260 for females. The per capita income for the village was $34,887. About 3.2% of families and 4.0% of the population were below the poverty line, including 4.3% of those under age 18 and 4.4% of those age 65 or over.