| PEOPLE | Lexington | Thornton | United States |
| Population | 17,870 | 118,772 | 308,035,306 |
| Pop. Density | 2,014 | 3,409 | 87 |
| Pop. Change | 52.03% | 42.00% | 8.07% |
| Median Age | 34.8 | 32 | 37.3 |
| Households | 7,345 | 41,359 | 116,716,292 |
| Household Size | 2.39 | 2.88 | 2.58 |
| Male Population | 48.20% | 49.46% | 49.27% |
| Female Population | 51.80% | 50.54% | 50.96% |
| Married Population | 53.18% | 54.49% | 47.02% |
| Single Population | 46.82% | 45.51% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.89% | 8.60% | 6.56% |
| Age 5 to 9 | 7.21% | 8.73% | 6.61% |
| Age 10 to 14 | 6.87% | 7.85% | 6.71% |
| Age 15 to 17 | 3.60% | 4.32% | 4.21% |
| Age 18 to 20 | 2.05% | 2.57% | 2.95% |
| Age 21 to 24 | 7.03% | 6.45% | 7.01% |
| Age 25 to 34 | 16.66% | 16.55% | 13.33% |
| Age 35 to 44 | 16.14% | 16.09% | 13.33% |
| Age 45 to 49 | 13.91% | 13.13% | 14.61% |
| Age 50 to 54 | 13.91% | 13.13% | 14.61% |
| Age 55 to 59 | 9.37% | 9.21% | 11.84% |
| Age 60 to 64 | 9.37% | 9.21% | 11.84% |
| Age 65 to 74 | 5.34% | 3.97% | 7.05% |
| Age 75 to 84 | 3.24% | 1.81% | 4.24% |
| Age 85 and over | 1.68% | 0.73% | 1.78% |
| RACE | | | |
| White | 80.77% | 77.35% | 72.41% |
| Black | 12.67% | 1.84% | 12.61% |
| Asian | 3.72% | 4.39% | 4.75% |
| American Indian | 0.27% | 1.11% | 0.95% |
| Other | 2.57% | 15.31% | 9.28% |
| Hispanic | 0.44% | 7.85% | 16.35% |
| Non-Hispanic | 99.56% | 92.15% | 83.65% |
| FAMILY | | | |
| Married, w/children | 37.32% | 39.59% | 30.42% |
| Married, no children | 37.68% | 35.25% | 42.46% |
| Single, w/children | 16.69% | 15.17% | 14.39% |
| Single, no children | 8.30% | 9.99% | 12.73% |
| Divorced | 9.00% | 11.47% | 10.62% |
| Separated | 6.45% | 3.50% | 4.97% |
| Widowed | 5.33% | 3.43% | 6.14% |
| Now Married | 52.43% | 53.91% | 46.32% |
| Never Married | 26.79% | 27.69% | 31.95% |
