| PEOPLE | Lake St. Louis | Edwardsville | United States |
| Population | 14,545 | 24,293 | 308,035,306 |
| Pop. Density | 1,840 | 1,242 | 87 |
| Pop. Change | 46.45% | 11.44% | 8.07% |
| Median Age | 41.4 | 30.7 | 37.3 |
| Households | 5,816 | 9,158 | 116,716,292 |
| Household Size | 2.57 | 2.47 | 2.58 |
| Male Population | 49.52% | 48.44% | 49.27% |
| Female Population | 50.48% | 51.56% | 50.96% |
| Married Population | 64.76% | 46.13% | 47.02% |
| Single Population | 35.24% | 53.87% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.75% | 5.09% | 6.56% |
| Age 5 to 9 | 6.52% | 5.89% | 6.61% |
| Age 10 to 14 | 7.14% | 5.97% | 6.71% |
| Age 15 to 17 | 3.99% | 3.66% | 4.21% |
| Age 18 to 20 | 2.15% | 6.28% | 2.95% |
| Age 21 to 24 | 4.97% | 16.34% | 7.01% |
| Age 25 to 34 | 11.19% | 11.35% | 13.33% |
| Age 35 to 44 | 13.36% | 12.07% | 13.33% |
| Age 45 to 49 | 15.38% | 12.70% | 14.61% |
| Age 50 to 54 | 15.38% | 12.70% | 14.61% |
| Age 55 to 59 | 13.57% | 10.05% | 11.84% |
| Age 60 to 64 | 13.57% | 10.05% | 11.84% |
| Age 65 to 74 | 9.93% | 5.58% | 7.05% |
| Age 75 to 84 | 5.06% | 3.37% | 4.24% |
| Age 85 and over | 0.98% | 1.65% | 1.78% |
| RACE | | | |
| White | 92.23% | 86.67% | 72.41% |
| Black | 3.82% | 8.27% | 12.61% |
| Asian | 2.13% | 2.41% | 4.75% |
| American Indian | 0.25% | 0.18% | 0.95% |
| Other | 1.57% | 2.47% | 9.28% |
| Hispanic | 67.86% | 9.43% | 16.35% |
| Non-Hispanic | 32.14% | 90.57% | 83.65% |
| FAMILY | | | |
| Married, w/children | 31.14% | 36.18% | 30.42% |
| Married, no children | 52.86% | 43.12% | 42.46% |
| Single, w/children | 9.64% | 10.90% | 14.39% |
| Single, no children | 6.36% | 9.80% | 12.73% |
| Divorced | 7.79% | 9.65% | 10.62% |
| Separated | 2.11% | 2.92% | 4.97% |
| Widowed | 3.21% | 5.10% | 6.14% |
| Now Married | 65.93% | 46.47% | 46.32% |
| Never Married | 20.96% | 35.85% | 31.95% |
