South San Francisco Real EstateSouth San Francisco is located in California. South San Francisco, California has a population of 67,120. South San Francisco is less family-centric than the surrounding county with 32.03% of the households containing married families with children. The county average for households married with children is 36.67%. The median household income in South San Francisco, California is $92,074. The median household income for the surrounding county is $105,667 compared to the national median of $57,652. The median age of people living in South San Francisco is 39.1 years. South San Francisco WeatherThe average high temperature in July is 72 degrees, with an average low temperature in January of 44.2 degrees. The average rainfall is approximately 23.5 inches per year, with 0 inches of snow per year. South San Francisco MapReal estate near South San FranciscoNearby CitiesNearby Cities Homes for Sale |