South San Francisco is located in California. South San Francisco, California has a population of 66,331. South San Francisco is less family-centric than the surrounding county with 31.67% of the households containing married families with children. The county average for households married with children is 35.93%.
The median household income in South San Francisco, California is $112,818. The median household income for the surrounding county is $136,837 compared to the national median of $69,021. The median age of people living in South San Francisco is 42.1 years.
The average high temperature in July is 66.7 degrees, with an average low temperature in January of 45 degrees. The average rainfall is approximately 21.7 inches per year, with 0 inches of snow per year.