San simeon is located in San luis obispo county California with a geographic area of 0.8 square miles. The total population in San simeon is 550 with 65.3% male and 34.7% female. Children under age 5 represent 17.8% of the population, under age 18 equal 27.3% of the population and over age 65 is 18.5% of the population. The median household income is $49,194, per capita income is $26,255. There are a total of 262 housing units with 31.3% owner occupied. Education includes 19.8% of residents that are high school graduates and 13.7% with a bachelor's degree or higher. The average temperature in San simeon in the summer is 76 degrees, and in the winter 43 degrees.