Middletown is a city located in Ohio. With a 2020 population of 48,795, it is the 19th largest city in Ohio and the 811th largest city in the United States. Middletown is currently declining at a rate of -0.07% annually but its population has increased by 0.21% since the most recent census, which recorded a population of 48,694 in 2010. Middletown reached it's highest population of 51,605 in 2000. Spanning over 26 miles, Middletown has a population density of 1,867 people per square mile.
The average household income in Middletown is $52,529 with a poverty rate of 25.45%. The median rental costs in recent years comes to $770 per month, and the median house value is $97,000. The median age in Middletown is 37.7 years, 36.3 years for males, and 38.8 years for females. For every 100 females there are 91.5 males.