| PEOPLE | St. Charles | United States |
| Population | 65,794 | 308,035,306 |
| Pop. Density | 2,782 | 87 |
| Pop. Change | 7.47% | 8.07% |
| Median Age | 36.7 | 37.3 |
| Households | 26,715 | 116,716,292 |
| Household Size | 2.29 | 2.58 |
| Male Population | 49.02% | 49.27% |
| Female Population | 50.98% | 50.96% |
| Married Population | 47.85% | 47.02% |
| Single Population | 52.15% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | |
| Age 0 to 4 | 5.86% | 6.56% |
| Age 5 to 9 | 5.19% | 6.61% |
| Age 10 to 14 | 5.29% | 6.71% |
| Age 15 to 17 | 3.33% | 4.21% |
| Age 18 to 20 | 3.89% | 2.95% |
| Age 21 to 24 | 9.94% | 7.01% |
| Age 25 to 34 | 14.67% | 13.33% |
| Age 35 to 44 | 11.30% | 13.33% |
| Age 45 to 49 | 14.88% | 14.61% |
| Age 50 to 54 | 14.88% | 14.61% |
| Age 55 to 59 | 11.73% | 11.84% |
| Age 60 to 64 | 11.73% | 11.84% |
| Age 65 to 74 | 7.06% | 7.05% |
| Age 75 to 84 | 4.75% | 4.24% |
| Age 85 and over | 2.12% | 1.78% |
| RACE | | |
| White | 87.48% | 72.41% |
| Black | 5.91% | 12.61% |
| Asian | 2.54% | 4.75% |
| American Indian | 0.28% | 0.95% |
| Other | 3.79% | 9.28% |
| Hispanic | 5.32% | 16.35% |
| Non-Hispanic | 94.68% | 83.65% |
| FAMILY | | |
| Married, w/children | 28.37% | 30.42% |
| Married, no children | 46.75% | 42.46% |
| Single, w/children | 13.40% | 14.39% |
| Single, no children | 11.48% | 12.73% |
| Divorced | 10.94% | 10.62% |
| Separated | 5.78% | 4.97% |
| Widowed | 6.99% | 6.14% |
| Now Married | 47.46% | 46.32% |
| Never Married | 28.83% | 31.95% |
