| PEOPLE | Cary | Littleton | United States |
| Population | 135,234 | 41,737 | 308,035,306 |
| Pop. Density | 2,488 | 3,215 | 87 |
| Pop. Change | 39.98% | 4.47% | 8.07% |
| Median Age | 36.6 | 41.3 | 37.3 |
| Households | 51,791 | 18,312 | 116,716,292 |
| Household Size | 2.59 | 2.26 | 2.58 |
| Male Population | 48.67% | 48.32% | 49.27% |
| Female Population | 51.33% | 51.68% | 50.96% |
| Married Population | 60.21% | 45.83% | 47.02% |
| Single Population | 39.79% | 54.17% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.98% | 5.71% | 6.56% |
| Age 5 to 9 | 8.14% | 6.17% | 6.61% |
| Age 10 to 14 | 7.91% | 5.70% | 6.71% |
| Age 15 to 17 | 4.69% | 4.00% | 4.21% |
| Age 18 to 20 | 1.72% | 1.98% | 2.95% |
| Age 21 to 24 | 4.62% | 5.87% | 7.01% |
| Age 25 to 34 | 13.37% | 12.69% | 13.33% |
| Age 35 to 44 | 17.12% | 12.90% | 13.33% |
| Age 45 to 49 | 16.65% | 16.22% | 14.61% |
| Age 50 to 54 | 16.65% | 16.22% | 14.61% |
| Age 55 to 59 | 10.14% | 13.02% | 11.84% |
| Age 60 to 64 | 10.14% | 13.02% | 11.84% |
| Age 65 to 74 | 5.11% | 7.52% | 7.05% |
| Age 75 to 84 | 2.55% | 5.54% | 4.24% |
| Age 85 and over | 0.98% | 2.69% | 1.78% |
| RACE | | | |
| White | 73.14% | 89.01% | 72.41% |
| Black | 7.98% | 1.40% | 12.61% |
| Asian | 13.06% | 2.18% | 4.75% |
| American Indian | 0.41% | 0.83% | 0.95% |
| Other | 5.41% | 6.58% | 9.28% |
| Hispanic | 11.11% | 2.17% | 16.35% |
| Non-Hispanic | 88.89% | 97.83% | 83.65% |
| FAMILY | | | |
| Married, w/children | 45.42% | 30.03% | 30.42% |
| Married, no children | 39.11% | 46.52% | 42.46% |
| Single, w/children | 9.77% | 12.49% | 14.39% |
| Single, no children | 5.70% | 10.97% | 12.73% |
| Divorced | 7.62% | 15.12% | 10.62% |
| Separated | 3.23% | 4.39% | 4.97% |
| Widowed | 2.72% | 7.85% | 6.14% |
| Now Married | 59.91% | 45.21% | 46.32% |
| Never Married | 26.51% | 27.43% | 31.95% |
