| | Woodside, CA | Atherton, CA | United States |
| Population | 5,316 | 7,181 | 329,725,481 |
| Female Population | 55.1% | 50.1% | 50.5% |
| Male Population | 44.9% | 49.9% | 49.5% |
| Median Age | 45.6 | 47.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,277 | 6,932 | 309,327,143 |
| Population - 2000 | 5,352 | 7,194 | 285,036,114 |
| Population - 1990 | 5,035 | 7,163 | 251,960,433 |
| Pop. 2000 to Now | 2.9% | -2.5% | 15.6% |
| Pop. 1990 to Now | 9.4% | -2.1% | 30.8% |
| space4 | | | |
| Population Density | 453.2 | 1,427.6 | 93.4 |
| Land Area | 11.7 | 5.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Woodside, CA | Atherton, CA | United States |
| Age 0 to 4 | 3.7% | 2.1% | 5.9% |
| Age 5 to 9 | 4.7% | 3.3% | 6.1% |
| Age 10 to 14 | 11.0% | 9.1% | 6.6% |
| Age 15 to 17 | 6.1% | 5.9% | 3.9% |
| Age 18 to 20 | 1.5% | 8.4% | 4.0% |
| Age 21 to 24 | 6.1% | 4.5% | 5.2% |
| Age 25 to 34 | 8.2% | 7.1% | 13.8% |
| Age 35 to 44 | 7.8% | 6.8% | 12.9% |
| Age 45 to 54 | 13.7% | 15.3% | 12.6% |
| Age 55 to 59 | 9.5% | 7.9% | 6.7% |
| Age 60 to 64 | 7.3% | 5.7% | 6.3% |
| Age 65 to 74 | 13.1% | 12.6% | 9.6% |
| Age 75 to 84 | 5.9% | 6.9% | 4.5% |
| Age 85 and over | 1.3% | 4.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Woodside, CA | Atherton, CA | United States |
| White | 77.3% | 67.9% | 59.4% |
| Black | 1.0% | 1.2% | 12.2% |
| Asian | 8.3% | 18.6% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.4% | 0.2% |
| Other | 0.3% | 0.0% | 0.4% |
| Two or More Races | 5.9% | 3.1% | 3.2% |
| Hispanic | 7.2% | 8.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Woodside, CA | Atherton, CA | United States |
| Married Population | 63.4% | 58.9% | 49.8% |
| Currently Married | 61.0% | 58.3% | 48.0% |
| Married but Separated | 2.4% | 0.6% | 1.8% |
| Single Population | 36.6% | 41.1% | 50.2% |
| Never Married | 28.1% | 33.3% | 33.8% |
| Divorced | 5.6% | 3.4% | 10.8% |
| Widowed | 3.0% | 4.4% | 5.6% |
| space5 | | | |
| Household Size | 3.18 | 2.92 | 2.60 |
| Households | 1,673 | 2,244 | 124,010,992 |
| Family Households | 1,363 | 1,843 | 80,755,759 |
| Married couple, w/children | 40.9% | 35.7% | 30.5% |
| Married couple, no children | 47.2% | 55.9% | 42.9% |
| Non Family Households | 310 | 401 | 43,255,233 |
| Single householder, w/children | 5.4% | 5.1% | 15.8% |
| Single householder, no children | 6.5% | 3.3% | 10.8% |