| PEOPLE | Round Rock | Roseville | United States |
| Population | 99,887 | 118,788 | 308,035,306 |
| Pop. Density | 2,928 | 3,279 | 87 |
| Pop. Change | 70.88% | 50.68% | 8.07% |
| Median Age | 31.9 | 36.8 | 37.3 |
| Households | 35,050 | 45,059 | 116,716,292 |
| Household Size | 2.87 | 2.62 | 2.58 |
| Male Population | 49.19% | 47.90% | 49.27% |
| Female Population | 50.81% | 52.10% | 50.96% |
| Married Population | 50.22% | 54.74% | 47.02% |
| Single Population | 49.78% | 45.26% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.78% | 6.77% | 6.56% |
| Age 5 to 9 | 9.32% | 7.53% | 6.61% |
| Age 10 to 14 | 8.46% | 7.52% | 6.71% |
| Age 15 to 17 | 4.50% | 4.45% | 4.21% |
| Age 18 to 20 | 2.39% | 2.48% | 2.95% |
| Age 21 to 24 | 5.57% | 5.43% | 7.01% |
| Age 25 to 34 | 16.40% | 13.26% | 13.33% |
| Age 35 to 44 | 17.62% | 14.82% | 13.33% |
| Age 45 to 49 | 13.42% | 14.32% | 14.61% |
| Age 50 to 54 | 13.42% | 14.32% | 14.61% |
| Age 55 to 59 | 8.12% | 10.06% | 11.84% |
| Age 60 to 64 | 8.12% | 10.06% | 11.84% |
| Age 65 to 74 | 3.35% | 6.38% | 7.05% |
| Age 75 to 84 | 1.45% | 4.82% | 4.24% |
| Age 85 and over | 0.62% | 2.16% | 1.78% |
| RACE | | | |
| White | 70.79% | 79.30% | 72.41% |
| Black | 9.76% | 1.96% | 12.61% |
| Asian | 5.17% | 8.44% | 4.75% |
| American Indian | 0.68% | 0.75% | 0.95% |
| Other | 13.61% | 9.55% | 9.28% |
| Hispanic | 1.15% | 2.77% | 16.35% |
| Non-Hispanic | 98.85% | 97.23% | 83.65% |
| FAMILY | | | |
| Married, w/children | 43.45% | 37.98% | 30.42% |
| Married, no children | 32.52% | 39.51% | 42.46% |
| Single, w/children | 15.46% | 13.04% | 14.39% |
| Single, no children | 8.56% | 9.48% | 12.73% |
| Divorced | 10.47% | 10.78% | 10.62% |
| Separated | 5.07% | 3.15% | 4.97% |
| Widowed | 3.25% | 5.51% | 6.14% |
| Now Married | 51.09% | 54.42% | 46.32% |
| Never Married | 30.11% | 26.14% | 31.95% |
