| Statistic | East San Mateo | San Mateo | California |
| Population | 1,599 | 103,619 | 39,512,223 |
| Population density (sq mi) | 11,123 | 8,539 | 256 |
| Median age | 36.5 | 37.8 | 36.0 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | n/a | 58% | 52% |
| Families w/ Kids under 18 | 59% | 43% | 46% |
| Speak English | n/a | 57% | 56% |
| Speak Spanish | n/a | 18% | 29% |
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| Race | East San Mateo | San Mateo | California |
| White | 50.37% | 50.17% | 61.26% |
| Black | 4.60% | 2.20% | 5.85% |
| Asian | 19.81% | 24.35% | 13.85% |
| American Indian | 1.37% | 0.59% | 0.74% |
| Native Hawaiian | 0.00% | 2.33% | 0.39% |
| Mixed race | 10.37% | 8.18% | 4.62% |
| Other race | 13.48% | 12.18% | 13.28% |
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