| PEOPLE | Middleton | Winfield | United States |
| Population | 17,442 | 9,080 | 308,035,306 |
| Pop. Density | 1,942 | 3,035 | 87 |
| Pop. Change | 12.29% | -1.38% | 8.07% |
| Median Age | 39 | 43.9 | 37.3 |
| Households | 8,037 | 3,414 | 116,716,292 |
| Household Size | 2.21 | 2.75 | 2.58 |
| Male Population | 48.31% | 48.84% | 49.27% |
| Female Population | 51.69% | 51.16% | 50.96% |
| Married Population | 49.54% | 65.40% | 47.02% |
| Single Population | 50.46% | 34.60% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.38% | 5.33% | 6.56% |
| Age 5 to 9 | 6.21% | 6.27% | 6.61% |
| Age 10 to 14 | 6.23% | 7.31% | 6.71% |
| Age 15 to 17 | 4.01% | 5.00% | 4.21% |
| Age 18 to 20 | 1.53% | 2.35% | 2.95% |
| Age 21 to 24 | 5.99% | 4.80% | 7.01% |
| Age 25 to 34 | 15.29% | 7.68% | 13.33% |
| Age 35 to 44 | 13.81% | 12.80% | 13.33% |
| Age 45 to 49 | 15.04% | 19.87% | 14.61% |
| Age 50 to 54 | 15.04% | 19.87% | 14.61% |
| Age 55 to 59 | 14.20% | 15.54% | 11.84% |
| Age 60 to 64 | 14.20% | 15.54% | 11.84% |
| Age 65 to 74 | 6.75% | 7.85% | 7.05% |
| Age 75 to 84 | 3.56% | 3.95% | 4.24% |
| Age 85 and over | 2.00% | 1.26% | 1.78% |
| RACE | | | |
| White | 87.09% | 91.64% | 72.41% |
| Black | 3.47% | 1.54% | 12.61% |
| Asian | 4.21% | 3.39% | 4.75% |
| American Indian | 0.33% | 0.14% | 0.95% |
| Other | 4.89% | 3.28% | 9.28% |
| Hispanic | 0.54% | 0.67% | 16.35% |
| Non-Hispanic | 99.46% | 99.33% | 83.65% |
| FAMILY | | | |
| Married, w/children | 32.72% | 37.02% | 30.42% |
| Married, no children | 46.06% | 49.86% | 42.46% |
| Single, w/children | 13.72% | 5.37% | 14.39% |
| Single, no children | 7.50% | 7.76% | 12.73% |
| Divorced | 12.31% | 6.59% | 10.62% |
| Separated | 2.31% | 2.18% | 4.97% |
| Widowed | 4.77% | 3.39% | 6.14% |
| Now Married | 49.44% | 64.76% | 46.32% |
| Never Married | 31.18% | 23.07% | 31.95% |
