Middletown is a city located in Maryland. With a 2020 population of 4,828, it is the 45th largest city in Maryland and the 4853rd largest city in the United States. Middletown is currently growing at a rate of 1.47% annually and its population has increased by 16.73% since the most recent census, which recorded a population of 4,136 in 2010. Spanning over 2 miles, Middletown has a population density of 2,280 people per square mile.
The average household income in Middletown is $139,841 with a poverty rate of 3.12%. The median rental costs in recent years comes to $1,327 per month, and the median house value is $410,300. The median age in Middletown is 38.5 years, 37.3 years for males, and 39.3 years for females. For every 100 females there are 89.5 males.