Kenilworth is a village in Cook County, Illinois, United States, 15 miles north of downtown Chicago. As of the 2020 census it had a population of 2,514. It is the newest of the nine suburban North Shore communities bordering Lake Michigan, and is one of those developed as a planned community. In 2018, Kenilworth was the eighth wealthiest community in the United States, and the wealthiest in the Midwestern United States.