| PEOPLE | Rock Hill | Lansing | United States |
| Population | 66,154 | 114,297 | 308,035,306 |
| Pop. Density | 1,852 | 3,171 | 87 |
| Pop. Change | 26.36% | -6.03% | 8.07% |
| Median Age | 32 | 32.4 | 37.3 |
| Households | 25,966 | 48,450 | 116,716,292 |
| Household Size | 2.44 | 2.34 | 2.58 |
| Male Population | 46.04% | 48.41% | 49.27% |
| Female Population | 53.96% | 51.59% | 50.96% |
| Married Population | 40.64% | 36.88% | 47.02% |
| Single Population | 59.36% | 63.12% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.41% | 7.65% | 6.56% |
| Age 5 to 9 | 6.69% | 6.78% | 6.61% |
| Age 10 to 14 | 6.33% | 6.18% | 6.71% |
| Age 15 to 17 | 3.94% | 3.59% | 4.21% |
| Age 18 to 20 | 4.17% | 2.84% | 2.95% |
| Age 21 to 24 | 10.55% | 9.36% | 7.01% |
| Age 25 to 34 | 15.12% | 17.79% | 13.33% |
| Age 35 to 44 | 13.37% | 12.36% | 13.33% |
| Age 45 to 49 | 12.30% | 13.02% | 14.61% |
| Age 50 to 54 | 12.30% | 13.02% | 14.61% |
| Age 55 to 59 | 9.72% | 10.76% | 11.84% |
| Age 60 to 64 | 9.72% | 10.76% | 11.84% |
| Age 65 to 74 | 5.37% | 5.13% | 7.05% |
| Age 75 to 84 | 3.28% | 3.18% | 4.24% |
| Age 85 and over | 1.76% | 1.35% | 1.78% |
| RACE | | | |
| White | 54.64% | 61.23% | 72.41% |
| Black | 38.32% | 23.74% | 12.61% |
| Asian | 1.69% | 3.72% | 4.75% |
| American Indian | 0.49% | 0.77% | 0.95% |
| Other | 4.87% | 10.53% | 9.28% |
| Hispanic | 0.26% | 0.24% | 16.35% |
| Non-Hispanic | 99.74% | 99.76% | 83.65% |
| FAMILY | | | |
| Married, w/children | 26.55% | 23.04% | 30.42% |
| Married, no children | 34.99% | 33.91% | 42.46% |
| Single, w/children | 21.80% | 25.33% | 14.39% |
| Single, no children | 16.66% | 17.72% | 12.73% |
| Divorced | 10.56% | 14.77% | 10.62% |
| Separated | 6.03% | 3.24% | 4.97% |
| Widowed | 7.05% | 5.40% | 6.14% |
| Now Married | 40.34% | 36.38% | 46.32% |
| Never Married | 36.02% | 40.21% | 31.95% |
