Friendswood is located in Galveston county Texas with a geographic area of 20.8 square miles. The total population in Friendswood is 39,893 with 48.3% male and 51.7% female. Children under age 5 represent 5.6% of the population, under age 18 equal 26.7% of the population and over age 65 is 14.3% of the population. The median household income is $108,135, per capita income is $48,670. There are a total of 13,540 housing units with 76.6% owner occupied. Education includes 14.6% of residents that are high school graduates and 50.8% with a bachelor's degree or higher. The average temperature in Friendswood in the summer is 83 degrees, and in the winter 49 degrees.