| PEOPLE | Dover | Castle Rock | United States |
| Population | 3,702 | 48,231 | 308,035,306 |
| Pop. Density | 1,423 | 1,427 | 87 |
| Pop. Change | 34.57% | 128.05% | 8.07% |
| Median Age | 26.9 | 33.7 | 37.3 |
| Households | 897 | 16,688 | 116,716,292 |
| Household Size | 3.85 | 2.86 | 2.58 |
| Male Population | 54.16% | 49.61% | 49.27% |
| Female Population | 45.84% | 50.39% | 50.96% |
| Married Population | 46.01% | 59.25% | 47.02% |
| Single Population | 53.99% | 40.75% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 11.86% | 9.21% | 6.56% |
| Age 5 to 9 | 8.83% | 10.23% | 6.61% |
| Age 10 to 14 | 7.97% | 8.56% | 6.71% |
| Age 15 to 17 | 4.70% | 4.37% | 4.21% |
| Age 18 to 20 | 3.46% | 2.01% | 2.95% |
| Age 21 to 24 | 9.59% | 3.73% | 7.01% |
| Age 25 to 34 | 16.64% | 13.96% | 13.33% |
| Age 35 to 44 | 12.24% | 19.00% | 13.33% |
| Age 45 to 49 | 10.99% | 14.14% | 14.61% |
| Age 50 to 54 | 10.99% | 14.14% | 14.61% |
| Age 55 to 59 | 5.73% | 8.58% | 11.84% |
| Age 60 to 64 | 5.73% | 8.58% | 11.84% |
| Age 65 to 74 | 4.73% | 4.05% | 7.05% |
| Age 75 to 84 | 2.57% | 1.49% | 4.24% |
| Age 85 and over | 0.70% | 0.66% | 1.78% |
| RACE | | | |
| White | 68.34% | 90.75% | 72.41% |
| Black | 2.24% | 1.13% | 12.61% |
| Asian | 0.24% | 1.68% | 4.75% |
| American Indian | 0.51% | 0.59% | 0.95% |
| Other | 28.66% | 5.85% | 9.28% |
| Hispanic | 2.09% | 20.00% | 16.35% |
| Non-Hispanic | 97.91% | 80.00% | 83.65% |
| FAMILY | | | |
| Married, w/children | 39.54% | 48.68% | 30.42% |
| Married, no children | 34.78% | 35.44% | 42.46% |
| Single, w/children | 14.95% | 11.16% | 14.39% |
| Single, no children | 10.73% | 4.72% | 12.73% |
| Divorced | 8.83% | 9.05% | 10.62% |
| Separated | 8.74% | 3.68% | 4.97% |
| Widowed | 3.46% | 2.71% | 6.14% |
| Now Married | 45.73% | 59.04% | 46.32% |
| Never Married | 33.23% | 25.52% | 31.95% |
