Fontana is located in San bernardino county California with a geographic area of 43.1 square miles. The total population in Fontana is 212,704 with 49.9% male and 50.1% female. Children under age 5 represent 6.8% of the population, under age 18 equal 28.9% of the population and over age 65 is 8.2% of the population. The median household income is $75,681, per capita income is $25,540. There are a total of 55,369 housing units with 66.3% owner occupied. Education includes 25.5% of residents that are high school graduates and 21.6% with a bachelor's degree or higher. The average temperature in Fontana in the summer is 77 degrees, and in the winter 43 degrees.