Winnetka is located in Illinois. Winnetka, Illinois has a population of 12,235. Winnetka is more family-centric than the surrounding county with 44% households with children. The county percentage for households with children is 26%.
The median household income in Winnetka, Illinois is $197,201. The median household income for the surrounding county is $68,916 compared to the national median of $66,222. The median age of people living in Winnetka is 43.4 years.
The average high temperature in July is 83.2 degrees, with an average low temperature in January of 13.7 degrees. The annual precipitation is 36.8.