San andreas is located in Calaveras county California with a geographic area of 8.4 square miles. The total population in San andreas is 3,729 with 51.4% male and 48.6% female. Children under age 5 represent 6.7% of the population, under age 18 equal 26.0% of the population and over age 65 is 14.0% of the population. The median household income is $31,773, per capita income is $15,409. There are a total of 1,138 housing units with 43.1% owner occupied. Education includes 27.4% of residents that are high school graduates and 13.6% with a bachelor's degree or higher. The average temperature in San andreas in the summer is 76 degrees, and in the winter 43 degrees.
