Decatur is located in Illinois. Decatur, Illinois has a population of 71,309. Decatur is less family-centric than the surrounding county with 20.47% of the households containing married families with children. The county average for households married with children is 24.83%.
The median household income in Decatur, Illinois is $45,111. The median household income for the surrounding county is $55,954 compared to the national median of $69,021. The median age of people living in Decatur is 39.9 years.
The average high temperature in July is 86.9 degrees, with an average low temperature in January of 18.8 degrees. The average rainfall is approximately 39.5 inches per year, with 13 inches of snow per year.
