Harrisburg is located in Illinois. Harrisburg, Illinois has a population of 8,378. Harrisburg is more family-centric than the surrounding county with 30% households with children. The county percentage for households with children is 28%.
The median household income in Harrisburg, Illinois is $37,243. The median household income for the surrounding county is $45,909 compared to the national median of $66,222. The median age of people living in Harrisburg is 39.4 years.
The average high temperature in July is 89.3 degrees, with an average low temperature in January of 21.7 degrees. The annual precipitation is 46.15.