| PEOPLE | Reston | Collegeville | United States |
| Population | 58,404 | 5,089 | 308,035,306 |
| Pop. Density | 3,810 | 3,238 | 87 |
| Pop. Change | 7.31% | -36.41% | 8.07% |
| Median Age | 38.1 | 23.5 | 37.3 |
| Households | 25,522 | 1,378 | 116,716,292 |
| Household Size | 2.29 | 2.58 | 2.58 |
| Male Population | 48.30% | 47.91% | 49.27% |
| Female Population | 51.70% | 52.09% | 50.96% |
| Married Population | 48.16% | 30.51% | 47.02% |
| Single Population | 51.84% | 69.49% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.09% | 4.44% | 6.56% |
| Age 5 to 9 | 5.77% | 4.68% | 6.61% |
| Age 10 to 14 | 5.04% | 5.17% | 6.71% |
| Age 15 to 17 | 2.95% | 3.77% | 4.21% |
| Age 18 to 20 | 1.34% | 14.72% | 2.95% |
| Age 21 to 24 | 4.44% | 19.89% | 7.01% |
| Age 25 to 34 | 17.98% | 6.86% | 13.33% |
| Age 35 to 44 | 16.43% | 9.86% | 13.33% |
| Age 45 to 49 | 14.57% | 12.42% | 14.61% |
| Age 50 to 54 | 14.57% | 12.42% | 14.61% |
| Age 55 to 59 | 13.05% | 9.27% | 11.84% |
| Age 60 to 64 | 13.05% | 9.27% | 11.84% |
| Age 65 to 74 | 7.37% | 5.03% | 7.05% |
| Age 75 to 84 | 2.93% | 2.53% | 4.24% |
| Age 85 and over | 1.05% | 1.36% | 1.78% |
| RACE | | | |
| White | 70.13% | 89.39% | 72.41% |
| Black | 9.68% | 4.05% | 12.61% |
| Asian | 10.93% | 3.83% | 4.75% |
| American Indian | 0.31% | 0.16% | 0.95% |
| Other | 8.95% | 2.57% | 9.28% |
| Hispanic | 2.35% | 51.61% | 16.35% |
| Non-Hispanic | 97.65% | 48.39% | 83.65% |
| FAMILY | | | |
| Married, w/children | 33.80% | 39.46% | 30.42% |
| Married, no children | 46.23% | 44.05% | 42.46% |
| Single, w/children | 10.93% | 8.35% | 14.39% |
| Single, no children | 9.04% | 8.14% | 12.73% |
| Divorced | 11.01% | 2.90% | 10.62% |
| Separated | 6.55% | 37.64% | 4.97% |
| Widowed | 3.95% | 16.66% | 6.14% |
| Now Married | 48.34% | 30.42% | 46.32% |
| Never Married | 30.15% | 12.39% | 31.95% |
