Winnetka is a village in Cook County, Illinois, United States, located 16 miles north of downtown Chicago. The population was 12,316 as of 2019. The village is one of the wealthiest places in the nation in terms of household income. It was the second-ranked Illinois community on Bloomberg's 2019 Richest Places Annual Index. In 2020, 24/7 Wall St ranked Winnetka as the second-best small town to live in the United States.