Kenilworth is a village in Cook County, Illinois, United States, 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. Even after the housing slump the average house in Kenilworth sells for about $1 million."