Stillman Valley is located in Illinois. Stillman Valley, Illinois has a population of 1,145. Stillman Valley is more family-centric than the surrounding county with 33.82% of the households containing married families with children. The county average for households married with children is 30.19%.
The median household income in Stillman Valley, Illinois is $61,750. The median household income for the surrounding county is $57,655 compared to the national median of $57,652. The median age of people living in Stillman Valley is 39.1 years.
The average high temperature in July is 83.9 degrees, with an average low temperature in January of 12.5 degrees. The average rainfall is approximately 37.1 inches per year, with 30.5 inches of snow per year.
