In 2022, Millbrook, IL had a population of 314 people with a median age of 38.1 and a median household income of $116,875. Between 2021 and 2022 the population of Millbrook, IL declined from 401 to 314, a −21.7% decrease and its median household income grew from $98,125 to $116,875, a 19.1% increase.
The 5 largest ethnic groups in Millbrook, IL are White (Non-Hispanic) (98.4%), Two+ (Non-Hispanic) (0.955%), White (Hispanic) (0.637%), Black or African American (Non-Hispanic) (0%), and Black or African American (Hispanic) (0%).
None of the households in Millbrook, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
100% of the residents in Millbrook, IL are U.S. citizens.
In 2022, the median property value in Millbrook, IL was $307,500, and the homeownership rate was 95.3%.
Most people in Millbrook, IL drove alone to work, and the average commute time was 39.8 minutes. The average car ownership in Millbrook, IL was 3 cars per household.