Middletown is located in Dauphin county Pennsylvania with a geographic area of 2.6 square miles. The total population in Middletown is 6,890 with 52.6% male and 47.4% female. Children under age 5 represent 2.8% of the population, under age 18 equal 16.6% of the population and over age 65 is 21.0% of the population. The median household income is $85,980, per capita income is $45,916. There are a total of 2,709 housing units with 87.1% owner occupied. Education includes 27.9% of residents that are high school graduates and 29.3% with a bachelor's degree or higher. The average temperature in Middletown in the summer is 73 degrees, and in the winter 33 degrees.
