Middletown is located in Montgomery county Missouri with a geographic area of 0.3 square miles. The total population in Middletown is 216 with 49.1% male and 50.9% female. Children under age 5 represent 7.4% of the population, under age 18 equal 26.4% of the population and over age 65 is 14.4% of the population. The median household income is $33,750, per capita income is $17,781. There are a total of 90 housing units with 64.4% owner occupied. Education includes 40.0% of residents that are high school graduates and 7.8% with a bachelor's degree or higher. The average temperature in Middletown in the summer is 77 degrees, and in the winter 32 degrees.