Joliet is located in Illinois. Joliet, Illinois has a population of 149,492. Joliet is more family-centric than the surrounding county with 37% households with children. The county percentage for households with children is 36%.
The median household income in Joliet, Illinois is $69,512. The median household income for the surrounding county is $88,241 compared to the national median of $66,222. The median age of people living in Joliet is 35.1 years.
The average high temperature in July is 84.6 degrees, with an average low temperature in January of 13.5 degrees. The annual precipitation is 36.96.