| PEOPLE | Springfield | Normal | United States |
| Population | 153,060 | 52,497 | 308,035,306 |
| Pop. Density | 4,803 | 2,861 | 87 |
| Pop. Change | 0.68% | 12.39% | 8.07% |
| Median Age | 32.3 | 24 | 37.3 |
| Households | 56,752 | 17,993 | 116,716,292 |
| Household Size | 2.6 | 2.44 | 2.58 |
| Male Population | 47.41% | 47.12% | 49.27% |
| Female Population | 52.59% | 52.88% | 50.96% |
| Married Population | 31.12% | 33.38% | 47.02% |
| Single Population | 68.88% | 66.62% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.31% | 5.22% | 6.56% |
| Age 5 to 9 | 7.25% | 5.19% | 6.61% |
| Age 10 to 14 | 7.47% | 4.56% | 6.71% |
| Age 15 to 17 | 4.98% | 2.83% | 4.21% |
| Age 18 to 20 | 4.29% | 10.05% | 2.95% |
| Age 21 to 24 | 8.79% | 25.65% | 7.01% |
| Age 25 to 34 | 13.35% | 12.37% | 13.33% |
| Age 35 to 44 | 12.40% | 9.31% | 13.33% |
| Age 45 to 49 | 12.88% | 9.39% | 14.61% |
| Age 50 to 54 | 12.88% | 9.39% | 14.61% |
| Age 55 to 59 | 10.33% | 7.18% | 11.84% |
| Age 60 to 64 | 10.33% | 7.18% | 11.84% |
| Age 65 to 74 | 5.57% | 3.87% | 7.05% |
| Age 75 to 84 | 3.71% | 2.78% | 4.24% |
| Age 85 and over | 1.67% | 1.59% | 1.78% |
| RACE | | | |
| White | 51.83% | 85.07% | 72.41% |
| Black | 22.26% | 8.11% | 12.61% |
| Asian | 2.44% | 3.21% | 4.75% |
| American Indian | 0.64% | 0.15% | 0.95% |
| Other | 22.83% | 3.46% | 9.28% |
| Hispanic | 2.61% | 0.00% | 16.35% |
| Non-Hispanic | 97.39% | 100.00% | 83.65% |
| FAMILY | | | |
| Married, w/children | 19.00% | 34.59% | 30.42% |
| Married, no children | 28.77% | 40.88% | 42.46% |
| Single, w/children | 31.36% | 14.91% | 14.39% |
| Single, no children | 20.88% | 9.62% | 12.73% |
| Divorced | 10.41% | 6.69% | 10.62% |
| Separated | 7.35% | 4.16% | 4.97% |
| Widowed | 6.21% | 3.06% | 6.14% |
| Now Married | 31.26% | 32.75% | 46.32% |
| Never Married | 44.78% | 53.34% | 31.95% |
