| PEOPLE | Milwaukee | St. Charles | United States |
| Population | 594,833 | 2,054 | 308,035,306 |
| Pop. Density | 6,188 | 971 | 87 |
| Pop. Change | -1.21% | -2.10% | 8.07% |
| Median Age | 30.3 | 38.7 | 37.3 |
| Households | 230,221 | 864 | 116,716,292 |
| Household Size | 2.5 | 2.41 | 2.58 |
| Male Population | 48.24% | 48.39% | 49.27% |
| Female Population | 51.76% | 51.61% | 50.96% |
| Married Population | 30.33% | 51.54% | 47.02% |
| Single Population | 69.67% | 48.46% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.19% | 5.60% | 6.56% |
| Age 5 to 9 | 7.38% | 7.30% | 6.61% |
| Age 10 to 14 | 7.12% | 7.25% | 6.71% |
| Age 15 to 17 | 4.44% | 3.89% | 4.21% |
| Age 18 to 20 | 3.93% | 2.68% | 2.95% |
| Age 21 to 24 | 9.76% | 6.57% | 7.01% |
| Age 25 to 34 | 16.22% | 11.93% | 13.33% |
| Age 35 to 44 | 12.47% | 11.98% | 13.33% |
| Age 45 to 49 | 12.16% | 13.88% | 14.61% |
| Age 50 to 54 | 12.16% | 13.88% | 14.61% |
| Age 55 to 59 | 9.39% | 12.80% | 11.84% |
| Age 60 to 64 | 9.39% | 12.80% | 11.84% |
| Age 65 to 74 | 4.53% | 8.18% | 7.05% |
| Age 75 to 84 | 3.06% | 4.58% | 4.24% |
| Age 85 and over | 1.35% | 3.36% | 1.78% |
| RACE | | | |
| White | 44.78% | 96.98% | 72.41% |
| Black | 39.97% | 0.93% | 12.61% |
| Asian | 3.51% | 0.10% | 4.75% |
| American Indian | 0.79% | 0.68% | 0.95% |
| Other | 10.96% | 1.31% | 9.28% |
| Hispanic | 0.85% | 0.44% | 16.35% |
| Non-Hispanic | 99.15% | 99.56% | 83.65% |
| FAMILY | | | |
| Married, w/children | 21.65% | 24.73% | 30.42% |
| Married, no children | 27.85% | 43.45% | 42.46% |
| Single, w/children | 30.73% | 19.09% | 14.39% |
| Single, no children | 19.77% | 12.73% | 12.73% |
| Divorced | 11.86% | 11.65% | 10.62% |
| Separated | 4.76% | 1.29% | 4.97% |
| Widowed | 5.85% | 6.82% | 6.14% |
| Now Married | 30.93% | 51.16% | 46.32% |
| Never Married | 46.59% | 29.09% | 31.95% |
