Winnetka is a city located in Cook County Illinois. With a 2020 population of 12,214, it is the 195th largest city in Illinois and the 2681st largest city in the United States . Winnetka is currently declining at a rate of -0.42% annually but its population has increased by 0.22% since the most recent census, which recorded a population of 12,187 in 2010. Winnetka reached it's highest population of 14,131 in 1970. Spanning over 4 miles, Winnetka has a population density of 3,208 people per square mile.
The average household income in Winnetka is $369,618 with a poverty rate of 2.86%. The median rental costs in recent years comes to $1,628 per month, and the median house value is $1.09 Mn. The median age in Winnetka is 40.9 years, 41.4 years for males, and 40.4 years for females.