| PEOPLE | Oak Park | Sunnyvale | United States |
| Population | 51,878 | 140,081 | 308,035,306 |
| Pop. Density | 11,037 | 6,371 | 87 |
| Pop. Change | -1.17% | 7.47% | 8.07% |
| Median Age | 38.8 | 35.7 | 37.3 |
| Households | 22,670 | 53,384 | 116,716,292 |
| Household Size | 2.27 | 2.61 | 2.58 |
| Male Population | 46.40% | 50.37% | 49.27% |
| Female Population | 53.60% | 49.63% | 50.96% |
| Married Population | 44.46% | 47.30% | 47.02% |
| Single Population | 55.54% | 52.70% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.46% | 8.03% | 6.56% |
| Age 5 to 9 | 6.87% | 6.44% | 6.61% |
| Age 10 to 14 | 6.63% | 5.07% | 6.71% |
| Age 15 to 17 | 4.20% | 2.90% | 4.21% |
| Age 18 to 20 | 1.69% | 1.67% | 2.95% |
| Age 21 to 24 | 4.48% | 5.01% | 7.01% |
| Age 25 to 34 | 13.83% | 19.61% | 13.33% |
| Age 35 to 44 | 15.80% | 16.74% | 13.33% |
| Age 45 to 49 | 15.65% | 13.76% | 14.61% |
| Age 50 to 54 | 15.65% | 13.76% | 14.61% |
| Age 55 to 59 | 13.74% | 9.60% | 11.84% |
| Age 60 to 64 | 13.74% | 9.60% | 11.84% |
| Age 65 to 74 | 6.06% | 5.79% | 7.05% |
| Age 75 to 84 | 3.00% | 3.68% | 4.24% |
| Age 85 and over | 1.61% | 1.71% | 1.78% |
| RACE | | | |
| White | 67.70% | 42.97% | 72.41% |
| Black | 21.65% | 1.95% | 12.61% |
| Asian | 4.84% | 40.92% | 4.75% |
| American Indian | 0.18% | 0.47% | 0.95% |
| Other | 5.63% | 13.69% | 9.28% |
| Hispanic | 0.00% | 5.57% | 16.35% |
| Non-Hispanic | 100.00% | 94.43% | 83.65% |
| FAMILY | | | |
| Married, w/children | 36.76% | 40.96% | 30.42% |
| Married, no children | 37.47% | 39.43% | 42.46% |
| Single, w/children | 14.31% | 7.96% | 14.39% |
| Single, no children | 11.46% | 11.64% | 12.73% |
| Divorced | 10.53% | 9.34% | 10.62% |
| Separated | 3.21% | 5.67% | 4.97% |
| Widowed | 4.80% | 5.44% | 6.14% |
| Now Married | 43.59% | 48.02% | 46.32% |
| Never Married | 37.87% | 31.54% | 31.95% |
