| PEOPLE | Madison | Carthage | United States |
| Population | 233,209 | 2,306 | 308,035,306 |
| Pop. Density | 3,037 | 806 | 87 |
| Pop. Change | 10.89% | -1.31% | 8.07% |
| Median Age | 31.1 | 40.3 | 37.3 |
| Households | 102,516 | 910 | 116,716,292 |
| Household Size | 2.17 | 2.34 | 2.58 |
| Male Population | 49.24% | 45.10% | 49.27% |
| Female Population | 50.76% | 54.90% | 50.96% |
| Married Population | 35.40% | 40.45% | 47.02% |
| Single Population | 64.60% | 59.55% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.81% | 6.03% | 6.56% |
| Age 5 to 9 | 4.86% | 7.03% | 6.61% |
| Age 10 to 14 | 4.27% | 6.42% | 6.71% |
| Age 15 to 17 | 2.52% | 3.82% | 4.21% |
| Age 18 to 20 | 4.56% | 2.86% | 2.95% |
| Age 21 to 24 | 14.97% | 5.38% | 7.01% |
| Age 25 to 34 | 19.57% | 12.97% | 13.33% |
| Age 35 to 44 | 11.89% | 10.49% | 13.33% |
| Age 45 to 49 | 11.55% | 15.39% | 14.61% |
| Age 50 to 54 | 11.55% | 15.39% | 14.61% |
| Age 55 to 59 | 10.40% | 11.14% | 11.84% |
| Age 60 to 64 | 10.40% | 11.14% | 11.84% |
| Age 65 to 74 | 4.86% | 8.28% | 7.05% |
| Age 75 to 84 | 3.11% | 6.03% | 4.24% |
| Age 85 and over | 1.63% | 4.16% | 1.78% |
| RACE | | | |
| White | 78.91% | 87.99% | 72.41% |
| Black | 7.26% | 7.16% | 12.61% |
| Asian | 7.38% | 0.30% | 4.75% |
| American Indian | 0.43% | 0.87% | 0.95% |
| Other | 6.02% | 3.69% | 9.28% |
| Hispanic | 0.00% | 1.61% | 16.35% |
| Non-Hispanic | 100.00% | 98.39% | 83.65% |
| FAMILY | | | |
| Married, w/children | 29.98% | 22.48% | 30.42% |
| Married, no children | 45.18% | 36.69% | 42.46% |
| Single, w/children | 14.70% | 19.96% | 14.39% |
| Single, no children | 10.14% | 20.86% | 12.73% |
| Divorced | 9.92% | 15.28% | 10.62% |
| Separated | 3.80% | 8.89% | 4.97% |
| Widowed | 3.88% | 14.78% | 6.14% |
| Now Married | 35.42% | 40.75% | 46.32% |
| Never Married | 46.97% | 20.29% | 31.95% |
