Kenilworth is a village in Cook County, Illinois, United States, 15 miles (24 km) north of downtown Chicago. As of the 2010 census it had a population of 2,513. It is the newest of the nine suburban North Shore communities bordering Lake Michigan, and is one of those developed as a planned community. Kenilworth has a reputation as being the wealthiest and the 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. ” By 2018, its rank had fallen to eighth nationally, though it remained the wealthiest neighborhood in the Midwest.
Kenilworth is located at 42°5′17″N 87°42′57″W / 42.08806°N 87.71583°W / 42.08806; -87.71583 (42.088128, -87.716009). According to the 2010 census, Kenilworth has a total area of 0.61 square miles (1.58 km), all land. The highest point in the village is in the northwest corner, along Ridge Road. This point is about 643 feet (196 m) above sea level, or 68 feet (21 m) above the surface of Lake Michigan.
As of the census of 2010, there were 2,513 people, 800 households and 699 families residing in the village. The population density was 4,188.3 people per square mile (1,570.6/km²). There were 855 housing units at an average density of 1,425.0 per square mile (534.4/km²). The racial makeup of the village was 97.4% White, 0.3% African American, 0.1% Native American, 1.3% Asian, and 0.9% from two or more races. Hispanic or Latino of any race were 1.6% of the population.
There were 800 households, out of which 47.6% had children under the age of 18 living with them, 79.3% were headed by married couples living together, 5.9% had a female householder with no husband present, and 12.6% were non-families. 11.1% of all households were made up of individuals, and 6.7% were someone living alone who was 65 years of age or older. The average household size was 3.14, and the average family size was 3.41.
In the village, the population was spread out with 34.3% under the age of 18, 4.9% from 18 to 24, 14.6% from 25 to 44, 32.6% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 42.4 years. For every 100 females, there were 95.3 males. For every 100 females age 18 and over, there were 91.2 males.
For the period 2007-11, the estimated median annual income for a household in the village was $242,188, and the median income for a family was over $250,000. The per capita income for the village was $104,301. 1.2% of families and 1.9% of the population were below the poverty line, including 1.8% of those under age 18 and 3.5% of those age 65 or over.