Stillman Valley is located in Illinois. Stillman Valley, Illinois has a population of 1,123. Stillman Valley is more family-centric than the surrounding county with 33% households with children. The county percentage for households with children is 29%.
The median household income in Stillman Valley, Illinois is $59,744. The median household income for the surrounding county is $62,812 compared to the national median of $66,222. The median age of people living in Stillman Valley is 41.6 years.
The average high temperature in July is 83.1 degrees, with an average low temperature in January of 9.76 degrees. The annual precipitation is 35.48.