| PEOPLE | Sunnyvale | Mountain View (Santa Clara county) | United States |
| Population | 140,081 | 74,066 | 308,035,306 |
| Pop. Density | 6,371 | 6,175 | 87 |
| Pop. Change | 7.47% | 4.57% | 8.07% |
| Median Age | 35.7 | 36 | 37.3 |
| Households | 53,384 | 31,957 | 116,716,292 |
| Household Size | 2.61 | 2.31 | 2.58 |
| Male Population | 50.37% | 50.89% | 49.27% |
| Female Population | 49.63% | 49.11% | 50.96% |
| Married Population | 47.30% | 43.40% | 47.02% |
| Single Population | 52.70% | 56.60% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.03% | 7.09% | 6.56% |
| Age 5 to 9 | 6.44% | 5.51% | 6.61% |
| Age 10 to 14 | 5.07% | 4.37% | 6.71% |
| Age 15 to 17 | 2.90% | 2.74% | 4.21% |
| Age 18 to 20 | 1.67% | 1.66% | 2.95% |
| Age 21 to 24 | 5.01% | 5.63% | 7.01% |
| Age 25 to 34 | 19.61% | 21.11% | 13.33% |
| Age 35 to 44 | 16.74% | 17.47% | 13.33% |
| Age 45 to 49 | 13.76% | 13.90% | 14.61% |
| Age 50 to 54 | 13.76% | 13.90% | 14.61% |
| Age 55 to 59 | 9.60% | 9.93% | 11.84% |
| Age 60 to 64 | 9.60% | 9.93% | 11.84% |
| Age 65 to 74 | 5.79% | 5.55% | 7.05% |
| Age 75 to 84 | 3.68% | 3.42% | 4.24% |
| Age 85 and over | 1.71% | 1.62% | 1.78% |
| RACE | | | |
| White | 42.97% | 55.99% | 72.41% |
| Black | 1.95% | 2.20% | 12.61% |
| Asian | 40.92% | 25.97% | 4.75% |
| American Indian | 0.47% | 0.46% | 0.95% |
| Other | 13.69% | 15.38% | 9.28% |
| Hispanic | 5.57% | 3.27% | 16.35% |
| Non-Hispanic | 94.43% | 96.73% | 83.65% |
| FAMILY | | | |
| Married, w/children | 40.96% | 37.01% | 30.42% |
| Married, no children | 39.43% | 41.81% | 42.46% |
| Single, w/children | 7.96% | 9.89% | 14.39% |
| Single, no children | 11.64% | 11.29% | 12.73% |
| Divorced | 9.34% | 10.13% | 10.62% |
| Separated | 5.67% | 5.79% | 4.97% |
| Widowed | 5.44% | 4.61% | 6.14% |
| Now Married | 48.02% | 43.03% | 46.32% |
| Never Married | 31.54% | 36.44% | 31.95% |
