| PEOPLE | Round Rock | Chandler | United States |
| Population | 99,887 | 236,123 | 308,035,306 |
| Pop. Density | 2,928 | 3,666 | 87 |
| Pop. Change | 70.88% | 28.73% | 8.07% |
| Median Age | 31.9 | 34.1 | 37.3 |
| Households | 35,050 | 86,924 | 116,716,292 |
| Household Size | 2.87 | 2.72 | 2.58 |
| Male Population | 49.19% | 49.10% | 49.27% |
| Female Population | 50.81% | 50.90% | 50.96% |
| Married Population | 50.22% | 48.31% | 47.02% |
| Single Population | 49.78% | 51.69% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.78% | 7.55% | 6.56% |
| Age 5 to 9 | 9.32% | 7.90% | 6.61% |
| Age 10 to 14 | 8.46% | 7.64% | 6.71% |
| Age 15 to 17 | 4.50% | 4.46% | 4.21% |
| Age 18 to 20 | 2.39% | 2.60% | 2.95% |
| Age 21 to 24 | 5.57% | 6.18% | 7.01% |
| Age 25 to 34 | 16.40% | 15.02% | 13.33% |
| Age 35 to 44 | 17.62% | 16.56% | 13.33% |
| Age 45 to 49 | 13.42% | 14.65% | 14.61% |
| Age 50 to 54 | 13.42% | 14.65% | 14.61% |
| Age 55 to 59 | 8.12% | 9.63% | 11.84% |
| Age 60 to 64 | 8.12% | 9.63% | 11.84% |
| Age 65 to 74 | 3.35% | 4.71% | 7.05% |
| Age 75 to 84 | 1.45% | 2.24% | 4.24% |
| Age 85 and over | 0.62% | 0.85% | 1.78% |
| RACE | | | |
| White | 70.79% | 73.29% | 72.41% |
| Black | 9.76% | 4.78% | 12.61% |
| Asian | 5.17% | 8.22% | 4.75% |
| American Indian | 0.68% | 1.52% | 0.95% |
| Other | 13.61% | 12.19% | 9.28% |
| Hispanic | 1.15% | 20.00% | 16.35% |
| Non-Hispanic | 98.85% | 80.00% | 83.65% |
| FAMILY | | | |
| Married, w/children | 43.45% | 38.14% | 30.42% |
| Married, no children | 32.52% | 37.12% | 42.46% |
| Single, w/children | 15.46% | 14.79% | 14.39% |
| Single, no children | 8.56% | 9.96% | 12.73% |
| Divorced | 10.47% | 11.57% | 10.62% |
| Separated | 5.07% | 3.81% | 4.97% |
| Widowed | 3.25% | 3.87% | 6.14% |
| Now Married | 51.09% | 49.26% | 46.32% |
| Never Married | 30.11% | 31.49% | 31.95% |
