| PEOPLE | Lafayette | Cupertino | United States |
| Population | 23,893 | 58,302 | 308,035,306 |
| Pop. Density | 1,570 | 5,180 | 87 |
| Pop. Change | -0.61% | 11.67% | 8.07% |
| Median Age | 45.2 | 39.9 | 37.3 |
| Households | 9,223 | 20,181 | 116,716,292 |
| Household Size | 2.56 | 2.86 | 2.58 |
| Male Population | 48.59% | 49.35% | 49.27% |
| Female Population | 51.41% | 50.65% | 50.96% |
| Married Population | 60.32% | 59.92% | 47.02% |
| Single Population | 39.68% | 40.08% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.93% | 5.44% | 6.56% |
| Age 5 to 9 | 7.18% | 8.84% | 6.61% |
| Age 10 to 14 | 7.84% | 8.23% | 6.71% |
| Age 15 to 17 | 4.97% | 5.06% | 4.21% |
| Age 18 to 20 | 1.86% | 2.04% | 2.95% |
| Age 21 to 24 | 3.24% | 3.59% | 7.01% |
| Age 25 to 34 | 6.73% | 8.57% | 13.33% |
| Age 35 to 44 | 12.84% | 18.23% | 13.33% |
| Age 45 to 49 | 18.03% | 17.34% | 14.61% |
| Age 50 to 54 | 18.03% | 17.34% | 14.61% |
| Age 55 to 59 | 15.74% | 10.18% | 11.84% |
| Age 60 to 64 | 15.74% | 10.18% | 11.84% |
| Age 65 to 74 | 9.05% | 6.23% | 7.05% |
| Age 75 to 84 | 5.06% | 4.03% | 4.24% |
| Age 85 and over | 2.51% | 2.23% | 1.78% |
| RACE | | | |
| White | 84.68% | 31.34% | 72.41% |
| Black | 0.69% | 0.59% | 12.61% |
| Asian | 9.05% | 63.28% | 4.75% |
| American Indian | 0.28% | 0.20% | 0.95% |
| Other | 5.30% | 4.59% | 9.28% |
| Hispanic | 47.39% | 12.51% | 16.35% |
| Non-Hispanic | 52.61% | 87.49% | 83.65% |
| FAMILY | | | |
| Married, w/children | 40.09% | 53.19% | 30.42% |
| Married, no children | 46.31% | 34.29% | 42.46% |
| Single, w/children | 6.67% | 5.60% | 14.39% |
| Single, no children | 6.93% | 6.92% | 12.73% |
| Divorced | 7.95% | 6.77% | 10.62% |
| Separated | 2.75% | 4.06% | 4.97% |
| Widowed | 4.62% | 5.76% | 6.14% |
| Now Married | 60.83% | 59.92% | 46.32% |
| Never Married | 23.86% | 23.49% | 31.95% |
