Mill Creek is located in Illinois. Mill Creek, Illinois has a population of 83. Mill Creek is less family-centric than the surrounding county with 13% households with children. The county percentage for households with children is 26%.
The median household income in Mill Creek, Illinois is $45,625. The median household income for the surrounding county is $53,438 compared to the national median of $66,222. The median age of people living in Mill Creek is 44.9 years.
The average high temperature in July is 89.5 degrees, with an average low temperature in January of 22.5 degrees. The annual precipitation is 48.3.