Willowbrook is located in Illinois. Willowbrook, Illinois has a population of 11,018. Willowbrook is less family-centric than the surrounding county with 14% households with children. The county percentage for households with children is 36%.
The median household income in Willowbrook, Illinois is $78,407. The median household income for the surrounding county is $88,241 compared to the national median of $66,222. The median age of people living in Willowbrook is 48.3 years.
The average high temperature in July is 85.25 degrees, with an average low temperature in January of 14.5 degrees. The annual precipitation is 38.3.