Clarendon Hills is a village in DuPage County, Illinois, United States. The population was 8,427 at the 2010 census. It is a south-western suburb of Chicago.
Clarendon Hills is located at 41°47′46″N 87°57′21″W (41.796030, -87.955960). It is approximately 18 miles southwest of Chicago.
According to the 2010 census, Clarendon Hills has a total area of 1.81 square miles (4.69 km2), of which 1.8 square miles (4.66 km2) (or 99.45%) is land and 0.01 square miles (0.03 km2) (or 0.55%) is water.
As of the census of 2000, there were 8,572 people, 2,836 households, and 2,056 families residing in the village. The population density was 4,377.1 people per square mile (1,688.6/km2). There were 2,939 housing units at an average density of 1,690.4 per square mile (652.2/km2). The racial makeup of the village was 94.07% White, 0.84% African American, 0.01% Native American, 3.52% Asian, 0.42% from other races, and 1.13% from two or more races. Hispanic or Latino of any race were 2.37% of the population.
There were 2,836 households, out of which 40.9% had children under the age of 18 living with them, 62.2% were married couples living together, 8.0% had a female householder with no husband present, and 27.5% were non-families.