Middletown is located in Newport county Rhode island with a geographic area of square miles. The total population in Middletown is 15,982 with 48.5% male and 51.5% female. Children under age 5 represent 5.1% of the population, under age 18 equal 18.8% of the population and over age 65 is 19.7% of the population. The median household income is $81,094, per capita income is $43,766. There are a total of 6,804 housing units with 56.5% owner occupied. Education includes 23.3% of residents that are high school graduates and 49.1% with a bachelor's degree or higher. The average temperature in Middletown in the summer is 69 degrees, and in the winter 33 degrees.