San marino is located in Los angeles county California with a geographic area of 3.8 square miles. The total population in San marino is 13,020 with 50.8% male and 49.2% female. Children under age 5 represent 4.8% of the population, under age 18 equal 23.8% of the population and over age 65 is 19.5% of the population. The median household income is $164,423, per capita income is $73,504. There are a total of 4,026 housing units with 84.5% owner occupied. Education includes 4.8% of residents that are high school graduates and 83.8% with a bachelor's degree or higher. The average temperature in San marino in the summer is 75 degrees, and in the winter 43 degrees.
