
Winnetka
- County:
- Cook County
- County Seat:
- No
- Area (mi²):
- 3.811
- State:
- Illinois
Winnetka is a village located in Cook County, Illinois. Winnetka has a 2025 population of 12,020. Winnetka is currently declining at a rate of -1.12% annually and its population has decreased by -5.35% since the most recent census, which recorded a population of 12,700 in 2020.
The average household income in Winnetka is $457,404 with a poverty rate of 1.9%. The median age in Winnetka is 42.4 years: 41.8 years for males, and 42.9 years for females.