Northbrook is located in Illinois. Northbrook, Illinois has a population of 33,871. Northbrook is more family-centric than the surrounding county with 29% households with children. The county percentage for households with children is 26%.
The median household income in Northbrook, Illinois is $126,740. 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 Northbrook is 50.3 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.