| | Brisbane, CA | South San Francisco, CA | United States |
| Population | 4,803 | 66,331 | 329,725,481 |
| Female Population | 48.4% | 49.8% | 50.5% |
| Male Population | 51.6% | 50.2% | 49.5% |
| Median Age | 43.8 | 42.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,282 | 63,674 | 309,327,143 |
| Population - 2000 | 3,597 | 60,552 | 285,036,114 |
| Population - 1990 | 2,952 | 54,312 | 251,960,433 |
| Pop. 2000 to Now | 27.2% | 9.9% | 15.6% |
| Pop. 1990 to Now | 55.0% | 22.6% | 30.8% |
| space4 | | | |
| Population Density | 1,551.4 | 7,189.6 | 93.4 |
| Land Area | 3.1 | 9.2 | 3,531,905.4 |
| Water Area | 17.0 | 21.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Brisbane, CA | South San Francisco, CA | United States |
| Age 0 to 4 | 6.3% | 4.6% | 5.9% |
| Age 5 to 9 | 6.4% | 5.4% | 6.1% |
| Age 10 to 14 | 4.5% | 4.9% | 6.6% |
| Age 15 to 17 | 2.1% | 2.8% | 3.9% |
| Age 18 to 20 | 1.9% | 3.1% | 4.0% |
| Age 21 to 24 | 5.0% | 4.4% | 5.2% |
| Age 25 to 34 | 8.2% | 14.4% | 13.8% |
| Age 35 to 44 | 17.4% | 14.1% | 12.9% |
| Age 45 to 54 | 17.0% | 14.8% | 12.6% |
| Age 55 to 59 | 10.3% | 7.6% | 6.7% |
| Age 60 to 64 | 6.1% | 7.2% | 6.3% |
| Age 65 to 74 | 9.2% | 10.1% | 9.6% |
| Age 75 to 84 | 3.7% | 4.4% | 4.5% |
| Age 85 and over | 1.9% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Brisbane, CA | South San Francisco, CA | United States |
| White | 39.4% | 21.5% | 59.4% |
| Black | 1.3% | 1.8% | 12.2% |
| Asian | 31.6% | 42.8% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.9% | 0.2% |
| Other | 0.8% | 0.2% | 0.4% |
| Two or More Races | 1.3% | 2.9% | 3.2% |
| Hispanic | 25.7% | 29.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Brisbane, CA | South San Francisco, CA | United States |
| Married Population | 47.8% | 53.3% | 49.8% |
| Currently Married | 45.6% | 51.9% | 48.0% |
| Married but Separated | 2.2% | 1.4% | 1.8% |
| Single Population | 52.2% | 46.7% | 50.2% |
| Never Married | 30.4% | 33.3% | 33.8% |
| Divorced | 17.4% | 8.0% | 10.8% |
| Widowed | 4.4% | 5.3% | 5.6% |
| space5 | | | |
| Household Size | 2.40 | 3.00 | 2.60 |
| Households | 1,997 | 21,895 | 124,010,992 |
| Family Households | 1,172 | 16,064 | 80,755,759 |
| Married couple, w/children | 24.7% | 31.7% | 30.5% |
| Married couple, no children | 43.4% | 43.8% | 42.9% |
| Non Family Households | 825 | 5,831 | 43,255,233 |
| Single householder, w/children | 15.8% | 8.9% | 15.8% |
| Single householder, no children | 16.0% | 15.6% | 10.8% |