| PEOPLE | Leesburg | Clarksburg | United States |
| Population | 42,616 | 13,766 | 308,035,306 |
| Pop. Density | 3,439 | 1,677 | 87 |
| Pop. Change | 65.72% | 354.97% | 8.07% |
| Median Age | 33.2 | 33.8 | 37.3 |
| Households | 14,441 | 4,157 | 116,716,292 |
| Household Size | 2.89 | 3.27 | 2.58 |
| Male Population | 48.92% | 48.55% | 49.27% |
| Female Population | 51.08% | 51.45% | 50.96% |
| Married Population | 52.63% | 61.60% | 47.02% |
| Single Population | 47.37% | 38.40% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 9.09% | 10.60% | 6.56% |
| Age 5 to 9 | 8.86% | 9.67% | 6.61% |
| Age 10 to 14 | 8.21% | 8.14% | 6.71% |
| Age 15 to 17 | 4.51% | 4.33% | 4.21% |
| Age 18 to 20 | 2.05% | 1.76% | 2.95% |
| Age 21 to 24 | 5.03% | 3.73% | 7.01% |
| Age 25 to 34 | 15.18% | 14.01% | 13.33% |
| Age 35 to 44 | 17.71% | 20.63% | 13.33% |
| Age 45 to 49 | 15.26% | 14.79% | 14.61% |
| Age 50 to 54 | 15.26% | 14.79% | 14.61% |
| Age 55 to 59 | 8.13% | 7.64% | 11.84% |
| Age 60 to 64 | 8.13% | 7.64% | 11.84% |
| Age 65 to 74 | 3.41% | 3.39% | 7.05% |
| Age 75 to 84 | 1.68% | 1.08% | 4.24% |
| Age 85 and over | 0.89% | 0.24% | 1.78% |
| RACE | | | |
| White | 71.13% | 44.06% | 72.41% |
| Black | 9.53% | 14.72% | 12.61% |
| Asian | 7.10% | 33.60% | 4.75% |
| American Indian | 0.38% | 0.15% | 0.95% |
| Other | 11.86% | 7.47% | 9.28% |
| Hispanic | 6.63% | 0.53% | 16.35% |
| Non-Hispanic | 93.37% | 99.47% | 83.65% |
| FAMILY | | | |
| Married, w/children | 48.25% | 55.43% | 30.42% |
| Married, no children | 31.13% | 28.88% | 42.46% |
| Single, w/children | 12.62% | 9.31% | 14.39% |
| Single, no children | 8.00% | 6.37% | 12.73% |
| Divorced | 9.91% | 9.76% | 10.62% |
| Separated | 5.99% | 1.98% | 4.97% |
| Widowed | 3.31% | 3.42% | 6.14% |
| Now Married | 52.64% | 61.69% | 46.32% |
| Never Married | 28.15% | 23.15% | 31.95% |
