Romeoville is located in Illinois. Romeoville, Illinois has a population of 40,809. Romeoville is more family-centric than the surrounding county with 39% households with children. The county percentage for households with children is 36%.
The median household income in Romeoville, Illinois is $80,407. 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 Romeoville is 34.1 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.