Old Mill Creek is located in Illinois. Old Mill Creek, Illinois has a population of 191. Old Mill Creek is less family-centric than the surrounding county with 12.7% of the households containing married families with children. The county average for households married with children is 36.27%.
The median household income in Old Mill Creek, Illinois is $105,417. The median household income for the surrounding county is $97,127 compared to the national median of $69,021. The median age of people living in Old Mill Creek is 61.2 years.
The average high temperature in July is 81.4 degrees, with an average low temperature in January of 14.8 degrees. The average rainfall is approximately 36 inches per year, with 41.7 inches of snow per year.
