Middletown is a city located in Middlesex County, Connecticut. With a 2020 population of 45,770, it is the 13th largest city in Connecticut and the 859th largest city in the United States. Middletown is currently declining at a rate of -0.41% annually and its population has decreased by -3.94% since the most recent census, which recorded a population of 47,648 in 2010. Middletown reached it's highest population of 47,741 in 2011. Spanning over 42 miles, Middletown has a population density of 1,116 people per square mile.
The average household income in Middletown is $88,996 with a poverty rate of 11.44%. The median rental costs in recent years comes to $1,132 per month, and the median house value is $227,000. The median age in Middletown is 36.6 years, 35.2 years for males, and 38.6 years for females. For every 100 females there are 94.7 males.