| PEOPLE | Thousand Oaks | Simi Valley | United States |
| Population | 126,683 | 124,237 | 308,035,306 |
| Pop. Density | 2,302 | 2,995 | 87 |
| Pop. Change | 8.03% | 10.48% | 8.07% |
| Median Age | 41.5 | 37.7 | 37.3 |
| Households | 45,836 | 41,237 | 116,716,292 |
| Household Size | 2.73 | 2.99 | 2.58 |
| Male Population | 48.93% | 49.13% | 49.27% |
| Female Population | 51.07% | 50.87% | 50.96% |
| Married Population | 55.70% | 51.87% | 47.02% |
| Single Population | 44.30% | 48.13% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.22% | 6.07% | 6.56% |
| Age 5 to 9 | 6.42% | 6.74% | 6.61% |
| Age 10 to 14 | 7.32% | 7.42% | 6.71% |
| Age 15 to 17 | 4.78% | 4.74% | 4.21% |
| Age 18 to 20 | 2.70% | 2.86% | 2.95% |
| Age 21 to 24 | 5.37% | 6.07% | 7.01% |
| Age 25 to 34 | 9.83% | 12.36% | 13.33% |
| Age 35 to 44 | 13.74% | 14.92% | 13.33% |
| Age 45 to 49 | 17.00% | 16.53% | 14.61% |
| Age 50 to 54 | 17.00% | 16.53% | 14.61% |
| Age 55 to 59 | 12.97% | 11.68% | 11.84% |
| Age 60 to 64 | 12.97% | 11.68% | 11.84% |
| Age 65 to 74 | 7.87% | 6.13% | 7.05% |
| Age 75 to 84 | 4.49% | 3.18% | 4.24% |
| Age 85 and over | 2.29% | 1.30% | 1.78% |
| RACE | | | |
| White | 80.28% | 75.34% | 72.41% |
| Black | 1.32% | 1.40% | 12.61% |
| Asian | 8.72% | 9.30% | 4.75% |
| American Indian | 0.39% | 0.61% | 0.95% |
| Other | 9.29% | 13.35% | 9.28% |
| Hispanic | 5.18% | 34.23% | 16.35% |
| Non-Hispanic | 94.82% | 65.77% | 83.65% |
| FAMILY | | | |
| Married, w/children | 36.86% | 37.59% | 30.42% |
| Married, no children | 44.62% | 40.72% | 42.46% |
| Single, w/children | 8.97% | 10.02% | 14.39% |
| Single, no children | 9.55% | 11.67% | 12.73% |
| Divorced | 9.89% | 11.12% | 10.62% |
| Separated | 2.85% | 3.54% | 4.97% |
| Widowed | 5.24% | 4.17% | 6.14% |
| Now Married | 54.68% | 51.95% | 46.32% |
| Never Married | 27.34% | 29.23% | 31.95% |
