Bethesda is located in Montgomery county Maryland with a geographic area of 13.3 square miles. The total population in Bethesda is 65,092 with 47.5% male and 52.5% female. Children under age 5 represent 5.7% of the population, under age 18 equal 23.2% of the population and over age 65 is 18.4% of the population. The median household income is $172,873, per capita income is $99,592. There are a total of 26,040 housing units with 66.5% owner occupied. Education includes 2.6% of residents that are high school graduates and 89.1% with a bachelor's degree or higher. The average temperature in Bethesda in the summer is 74 degrees, and in the winter 37 degrees.