Sunnyvale is located in Santa clara county California with a geographic area of 22.1 square miles. The total population in Sunnyvale is 152,569 with 51.4% male and 48.6% female. Children under age 5 represent 7.1% of the population, under age 18 equal 20.9% of the population and over age 65 is 11.9% of the population. The median household income is $150,464, per capita income is $72,477. There are a total of 55,807 housing units with 44.9% owner occupied. Education includes 7.0% of residents that are high school graduates and 70.3% with a bachelor's degree or higher. The average temperature in Sunnyvale in the summer is 69 degrees, and in the winter 43 degrees.