Johnsburg is located in Illinois. Johnsburg, Illinois has a population of 6,640. Johnsburg is less family-centric than the surrounding county with 31% households with children. The county percentage for households with children is 33%.
The median household income in Johnsburg, Illinois is $105,016. The median household income for the surrounding county is $87,114 compared to the national median of $66,222. The median age of people living in Johnsburg is 43.9 years.
The average high temperature in July is 82.2 degrees, with an average low temperature in January of 11.4 degrees. The annual precipitation is 33.71.