Middletown is a city located in Logan County Illinois. With a 2020 population of 298, it is the 1019th largest city in Illinois and the 15340th largest city in the United States . Middletown is currently declining at a rate of -1.00% annually and its population has decreased by -8.02% since the most recent census, which recorded a population of 324 in 2010. Middletown reached it's highest population of in . Spanning over 0 miles, Middletown has a population density of 873 people per square mile.
The average household income in Middletown is $60,545 with a poverty rate of 10.69%. The median rental costs in recent years comes to $655 per month, and the median house value is $61,800. The median age in Middletown is 35.9 years, 35.5 years for males, and 40.6 years for females.