Simpson is located in Illinois. Simpson, Illinois has a population of 46. Simpson is more family-centric than the surrounding county with 22% households with children. The county percentage for households with children is 21%.
The median household income in Simpson, Illinois is $71,458. The median household income for the surrounding county is $55,642 compared to the national median of $66,222. The median age of people living in Simpson is 45.3 years.
The average high temperature in July is 89.84 degrees, with an average low temperature in January of 24.02 degrees. The annual precipitation is 48.05.