| Statistic | Western Hills | San Mateo | California |
| Population | 2,148 | 106,097 | 40,994,941 |
| Population density (sq mi) | 3,094 | 8,747 | 263 |
| Median age | 42.5 | 37.8 | 36.0 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | n/a | 58% | 52% |
| Families w/ Kids under 18 | 46% | 43% | 46% |
| Speak English | n/a | 57% | 56% |
| Speak Spanish | n/a | 18% | 29% |
| Race | Western Hills | San Mateo | California |
| White | 62.66% | 50.17% | 61.26% |
| Black | 1.70% | 2.20% | 5.85% |
| Asian | 27.58% | 24.35% | 13.85% |
| American Indian | 0.00% | 0.59% | 0.74% |
| Native Hawaiian | 0.00% | 2.33% | 0.39% |
| Mixed race | 7.54% | 8.18% | 4.62% |
| Other race | 0.52% | 12.18% | 13.28% |
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