| PEOPLE | Knoxville | Marengo | United States |
| Population | 178,874 | 828 | 308,035,306 |
| Pop. Density | 1,816 | 1,069 | 87 |
| Pop. Change | 5.40% | -6.84% | 8.07% |
| Median Age | 33 | 36.3 | 37.3 |
| Households | 78,048 | 354 | 116,716,292 |
| Household Size | 2.23 | 2.42 | 2.58 |
| Male Population | 48.05% | 47.83% | 49.27% |
| Female Population | 51.95% | 52.17% | 50.96% |
| Married Population | 35.69% | 51.39% | 47.02% |
| Single Population | 64.31% | 48.61% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.22% | 8.94% | 6.56% |
| Age 5 to 9 | 5.26% | 7.13% | 6.61% |
| Age 10 to 14 | 4.70% | 6.64% | 6.71% |
| Age 15 to 17 | 2.93% | 3.99% | 4.21% |
| Age 18 to 20 | 4.54% | 3.14% | 2.95% |
| Age 21 to 24 | 13.14% | 7.49% | 7.01% |
| Age 25 to 34 | 16.04% | 10.87% | 13.33% |
| Age 35 to 44 | 11.78% | 13.29% | 13.33% |
| Age 45 to 49 | 12.32% | 12.92% | 14.61% |
| Age 50 to 54 | 12.32% | 12.92% | 14.61% |
| Age 55 to 59 | 10.52% | 11.11% | 11.84% |
| Age 60 to 64 | 10.52% | 11.11% | 11.84% |
| Age 65 to 74 | 6.00% | 6.76% | 7.05% |
| Age 75 to 84 | 4.37% | 6.04% | 4.24% |
| Age 85 and over | 2.19% | 1.69% | 1.78% |
| RACE | | | |
| White | 76.09% | 95.41% | 72.41% |
| Black | 17.09% | 0.12% | 12.61% |
| Asian | 1.65% | 0.00% | 4.75% |
| American Indian | 0.35% | 0.85% | 0.95% |
| Other | 4.83% | 3.62% | 9.28% |
| Hispanic | 7.25% | 6.83% | 16.35% |
| Non-Hispanic | 92.75% | 93.17% | 83.65% |
| FAMILY | | | |
| Married, w/children | 22.23% | 29.11% | 30.42% |
| Married, no children | 39.99% | 37.09% | 42.46% |
| Single, w/children | 19.98% | 22.07% | 14.39% |
| Single, no children | 17.81% | 11.74% | 12.73% |
| Divorced | 14.27% | 13.78% | 10.62% |
| Separated | 4.55% | 3.37% | 4.97% |
| Widowed | 7.62% | 6.89% | 6.14% |
| Now Married | 35.99% | 52.22% | 46.32% |
| Never Married | 37.58% | 23.74% | 31.95% |
