South San Francisco is a city located in San Mateo County California. With a 2020 population of 66,599, it is the 141st largest city in California and the 622nd largest city in the United States. South San Francisco is currently growing at a rate of 0.37% annually but its population has decreased by -0.42% since the most recent census, which recorded a population of 66,878 in 2020. Spanning over 30 miles, South San Francisco has a population density of 7,219 people per square mile.
The average household income in South San Francisco is $129,305 with a poverty rate of 6.80%. The median rental costs in recent years comes to $2,279 per month, and the median house value is $911,000. The median age in South San Francisco is 40.4 years, 39.1 years for males, and 41.8 years for females.
According to the most recent ACS, the racial composition of South San Franciscowas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among black people with a rate of 97.01%.
The highest rate of bachelors degrees is among asian people with a rate of 53.26%.
46.16% of South San Francisco residents speak only English, while 53.84% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 26.82% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in South San Francisco is Native, with 22.87% below the poverty level.
The race least likely to be in poverty in South San Francisco is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.56%. Among those working part-time, it was 10.22%, and for those that did not work, the poverty rate was 12.68%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in South San Francisco
61.25% of South San Francisco residents were born in the United States, with 50.52% having been born in California. 10.73% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.