Severn is located in Anne arundel county Maryland with a geographic area of 18.3 square miles. The total population in Severn is 53,374 with 48.6% male and 51.4% female. Children under age 5 represent 6.8% of the population, under age 18 equal 23.9% of the population and over age 65 is 10.6% of the population. The median household income is $109,948, per capita income is $45,031. There are a total of 19,491 housing units with 71.2% owner occupied. Education includes 17.3% of residents that are high school graduates and 50.3% with a bachelor's degree or higher. The average temperature in Severn in the summer is 74 degrees, and in the winter 37 degrees.