Mayo is located in Anne arundel county Maryland with a geographic area of 5.6 square miles. The total population in Mayo is 7,979 with 50.3% male and 49.7% female. Children under age 5 represent 8.6% of the population, under age 18 equal 22.6% of the population and over age 65 is 15.6% of the population. The median household income is $123,440, per capita income is $52,004. There are a total of 2,958 housing units with 88.3% owner occupied. Education includes 26.5% of residents that are high school graduates and 38.6% with a bachelor's degree or higher. The average temperature in Mayo in the summer is 74 degrees, and in the winter 37 degrees.