South San Francisco Flag

South San Francisco

County Seat:
No
Area (mi²):
9.204
State:
California

South San Francisco is a city located in San Mateo County, California. South San Francisco has a 2026 population of 64,038. South San Francisco is currently declining at a rate of -0.48% annually and its population has decreased by -2.83% since the most recent census, which recorded a population of 65,903 in 2020.

The median household income in South San Francisco is $136,578 with a poverty rate of 6.73%. The median age in South San Francisco is 43.2 years: 42.4 years for males, and 44.3 years for females. For every 100 females there are 100.5 males.

64K
Total Population
6,958
Density (mi²)
-311 -0.48%
Growth

South San Francisco Population

South San Francisco Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202664,038-311-0.48%
202564,349-311-0.48%
202464,6609221.45%
202363,7383700.58%
202263,368-454-0.71%
202163,822-2,081-3.16%
202065,903-192-0.29%
201966,809-22-0.03%
201866,831-180-0.27%
201767,011-136-0.2%
201667,147190.03%
201567,1284770.72%
201466,6515190.78%
201366,1328391.28%
201265,2931,0171.58%
201164,2766020.95%
201063,674420.07%
200060,5526,24011.49%
199054,3124,9199.96%
198049,3932,7475.89%
197046,6467,22818.34%
196039,41820,067103.7%
195019,35112,722191.91%
19406,6294367.04%
19306,1931,78240.4%
19204,4112,422121.77%
19101,98900%

Median Age

Overall: 43.2 years
Female: 44.3 years
Male: 42.4 years

South San Francisco Adults

There are 53,230 adults, (12,320 of whom are seniors) in South San Francisco.

Sex Ratio

Female: 32,068 (49.9%)
Male: 32,237 (50.1%)

Demographics

The racial composition of South San Francisco includes 42.26% Asian, 23.71% White, 15.53% other race, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
Asian27,17442.26%
White15,24423.71%
Other race9,98915.53%
Two or more races9,71915.11%
Black or African American9991.55%
Native American6230.97%
Native Hawaiian or Pacific Islander5570.87%
Race
Population ↓
Percentage (of total)
Other race9,78315.21%
Two or more races7,46911.61%
White2,3563.66%
Native American5520.86%
Asian3070.48%
Native Hawaiian or Pacific Islander1440.22%
Black or African American120.02%
Race
Population ↓
Percentage (of total)
Asian26,86741.78%
White12,88820.04%
Two or more races2,2503.5%
Black or African American9871.53%
Native Hawaiian or Pacific Islander4130.64%
Other race2060.32%
Native American710.11%

South San Francisco Marital Status

Economics and Income Statistics

South San Francisco 's average per capita income is $66,854. Household income levels show a median of $136,578. The poverty rate stands at 6.73%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$175,702$199,495
Families$152,644$177,758
Households$136,578$177,602
Non Families$95,721$161,999

$66,854

Average Income

$136,578

Median Household Income

6.73%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)