| PEOPLE | Clarksville | Alpharetta | United States |
| Population | 132,929 | 57,551 | 308,035,306 |
| Pop. Density | 1,362 | 2,139 | 87 |
| Pop. Change | 30.70% | 29.92% | 8.07% |
| Median Age | 28.7 | 36.5 | 37.3 |
| Households | 49,439 | 21,742 | 116,716,292 |
| Household Size | 2.64 | 2.63 | 2.58 |
| Male Population | 48.72% | 48.74% | 49.27% |
| Female Population | 51.28% | 51.26% | 50.96% |
| Married Population | 51.91% | 56.10% | 47.02% |
| Single Population | 48.09% | 43.90% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 9.59% | 6.49% | 6.56% |
| Age 5 to 9 | 7.85% | 8.24% | 6.61% |
| Age 10 to 14 | 6.94% | 8.96% | 6.71% |
| Age 15 to 17 | 4.06% | 5.13% | 4.21% |
| Age 18 to 20 | 3.15% | 1.88% | 2.95% |
| Age 21 to 24 | 10.52% | 4.16% | 7.01% |
| Age 25 to 34 | 18.84% | 12.55% | 13.33% |
| Age 35 to 44 | 12.97% | 17.72% | 13.33% |
| Age 45 to 49 | 11.25% | 18.02% | 14.61% |
| Age 50 to 54 | 11.25% | 18.02% | 14.61% |
| Age 55 to 59 | 7.54% | 9.49% | 11.84% |
| Age 60 to 64 | 7.54% | 9.49% | 11.84% |
| Age 65 to 74 | 4.23% | 4.00% | 7.05% |
| Age 75 to 84 | 2.31% | 2.32% | 4.24% |
| Age 85 and over | 0.74% | 1.04% | 1.78% |
| RACE | | | |
| White | 65.55% | 70.04% | 72.41% |
| Black | 23.17% | 10.85% | 12.61% |
| Asian | 2.33% | 13.36% | 4.75% |
| American Indian | 0.61% | 0.19% | 0.95% |
| Other | 8.35% | 5.55% | 9.28% |
| Hispanic | 3.24% | 0.83% | 16.35% |
| Non-Hispanic | 96.76% | 99.17% | 83.65% |
| FAMILY | | | |
| Married, w/children | 34.31% | 47.77% | 30.42% |
| Married, no children | 35.69% | 34.52% | 42.46% |
| Single, w/children | 19.87% | 11.06% | 14.39% |
| Single, no children | 10.13% | 6.66% | 12.73% |
| Divorced | 11.05% | 11.33% | 10.62% |
| Separated | 7.59% | 2.66% | 4.97% |
| Widowed | 4.22% | 2.50% | 6.14% |
| Now Married | 52.40% | 55.28% | 46.32% |
| Never Married | 24.73% | 28.22% | 31.95% |
