Kenilworth is a village in Cook County, Illinois, approximately 17 mi (28 km) north of downtown Chicago. It is the newest of the nine suburban North Shore communities bordering Lake Michigan, and is the only one developed as a planned community. Kenilworth has a reputation as the wealthiest, whitest, and most exclusive community in the Midwest. In January 2011, Forbes.com ranked Kenilworth as the second most affluent neighborhood in the United States, naming it "the most exclusive neighborhood in the Midwest, with estimated median household income of $247,000. Even after the housing slump the average house in Kenilworth sells for about $1 million." .
As of the census of 2000, there were 2,494 people, 792 households and 697 families residing in the village. The population density was 4,190.8 people per square mile (1,604.9/km²). There were 815 housing units at an average density of 1,369.5 per square milele (524.5/km²). The racial makeup of the village was 97.27% White, 0.16% African American, 0.04% Native American, 2.25% Asian, and 0.28% from two or more races. Hispanic or Latino of any race were 1.36% of the population.
There were 792 households out of which 49.9% had children under the age of 18 living with them, 81.7% were married couples living together, 5.6% had a female householder with no husband present and 11.9% were non-families. 10.2% of all households were made up of individuals and 6.4% had someone living alone who was 65 years of age or older. The average household size was 3.15 and the average family size was 3.39.