South lake tahoe is located in El dorado county California with a geographic area of 10.2 square miles. The total population in South lake tahoe is 22,535 with 52.1% male and 47.9% female. Children under age 5 represent 4.6% of the population, under age 18 equal 15.3% of the population and over age 65 is 15.7% of the population. The median household income is $52,871, per capita income is $37,404. There are a total of 9,552 housing units with 41.8% owner occupied. Education includes 20.6% of residents that are high school graduates and 29.5% with a bachelor's degree or higher. The average temperature in South lake tahoe in the summer is 57 degrees, and in the winter 43 degrees.