San diego is located in San diego county California with a geographic area of 325.9 square miles. The total population in San diego is 1,414,545 with 50.5% male and 49.5% female. Children under age 5 represent 5.8% of the population, under age 18 equal 19.6% of the population and over age 65 is 13.3% of the population. The median household income is $83,454, per capita income is $43,090. There are a total of 511,662 housing units with 47.5% owner occupied. Education includes 12.2% of residents that are high school graduates and 51.9% with a bachelor's degree or higher. The average temperature in San diego in the summer is 70 degrees, and in the winter 43 degrees.