Middletown is located in Illinois. Middletown, Illinois has a population of 294. Middletown is more family-centric than the surrounding county with 28% households with children. The county percentage for households with children is 24%.
The median household income in Middletown, Illinois is $74,750. The median household income for the surrounding county is $59,448 compared to the national median of $66,222. The median age of people living in Middletown is 44.8 years.
The average high temperature in July is 86 degrees, with an average low temperature in January of 14.7 degrees. The annual precipitation is 37.88.