Millbrook is located in Illinois. Millbrook, Illinois has a population of 401. Millbrook is more family-centric than the surrounding county with 50.98% of the households containing married families with children. The county average for households married with children is 42.61%.
The median household income in Millbrook, Illinois is $98,125. The median household income for the surrounding county is $101,816 compared to the national median of $69,021. The median age of people living in Millbrook is 34.9 years.
The average high temperature in July is 84.1 degrees, with an average low temperature in January of 14.4 degrees. The average rainfall is approximately 38 inches per year, with 26.9 inches of snow per year.
