Middletown is a city located in Delaware. With a 2020 population of 23,744, it is the 4th largest city in Delaware (after Wilmington, Dover, and Newark) and the 1619th largest city in the United States. Middletown is currently growing at a rate of 2.51% annually and its population has increased by 25.82% since the most recent census, which recorded a population of 18,871 in 2010. Spanning over 12 miles, Middletown has a population density of 2,011 people per square mile.
The average household income in Middletown is $105,079 with a poverty rate of 5.63%. The median rental costs in recent years comes to $1,202 per month, and the median house value is $288,400. The median age in Middletown is 37.8 years, 36 years for males, and 38.7 years for females. For every 100 females there are 88.7 males.