Millbrook is located in Illinois. Millbrook, Illinois has a population of 380. Millbrook is less family-centric than the surrounding county with 21.21% of the households containing married families with children. The county average for households married with children is 43.85%.
The median household income in Millbrook, Illinois is $73,125. The median household income for the surrounding county is $89,860 compared to the national median of $57,652. The median age of people living in Millbrook is 47.1 years.
The average high temperature in July is 83.5 degrees, with an average low temperature in January of 12.6 degrees. The average rainfall is approximately 37.7 inches per year, with 24 inches of snow per year.
