Perry hall is located in Baltimore county Maryland with a geographic area of 6.9 square miles. The total population in Perry hall is 27,778 with 50.6% male and 49.4% female. Children under age 5 represent 6.0% of the population, under age 18 equal 20.8% of the population and over age 65 is 16.6% of the population. The median household income is $91,702, per capita income is $40,774. There are a total of 10,408 housing units with 78.4% owner occupied. Education includes 18.9% of residents that are high school graduates and 49.3% with a bachelor's degree or higher. The average temperature in Perry hall in the summer is 74 degrees, and in the winter 37 degrees.