| PEOPLE | Downers Grove | Chico | United States |
| Population | 47,833 | 86,187 | 308,035,306 |
| Pop. Density | 3,344 | 2,618 | 87 |
| Pop. Change | -3.97% | 12.56% | 8.07% |
| Median Age | 42.6 | 28.8 | 37.3 |
| Households | 19,187 | 34,805 | 116,716,292 |
| Household Size | 2.51 | 2.39 | 2.58 |
| Male Population | 48.21% | 49.55% | 49.27% |
| Female Population | 51.79% | 50.45% | 50.96% |
| Married Population | 55.27% | 32.63% | 47.02% |
| Single Population | 44.73% | 67.37% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.52% | 5.69% | 6.56% |
| Age 5 to 9 | 6.43% | 5.39% | 6.61% |
| Age 10 to 14 | 6.53% | 5.20% | 6.71% |
| Age 15 to 17 | 4.29% | 3.17% | 4.21% |
| Age 18 to 20 | 1.97% | 6.68% | 2.95% |
| Age 21 to 24 | 5.25% | 17.24% | 7.01% |
| Age 25 to 34 | 10.59% | 15.24% | 13.33% |
| Age 35 to 44 | 12.77% | 10.70% | 13.33% |
| Age 45 to 49 | 16.96% | 10.52% | 14.61% |
| Age 50 to 54 | 16.96% | 10.52% | 14.61% |
| Age 55 to 59 | 14.45% | 9.50% | 11.84% |
| Age 60 to 64 | 14.45% | 9.50% | 11.84% |
| Age 65 to 74 | 7.55% | 4.95% | 7.05% |
| Age 75 to 84 | 4.99% | 3.37% | 4.24% |
| Age 85 and over | 2.71% | 2.34% | 1.78% |
| RACE | | | |
| White | 88.55% | 80.76% | 72.41% |
| Black | 2.98% | 2.05% | 12.61% |
| Asian | 5.51% | 4.24% | 4.75% |
| American Indian | 0.16% | 1.35% | 0.95% |
| Other | 2.80% | 11.59% | 9.28% |
| Hispanic | 4.64% | 35.48% | 16.35% |
| Non-Hispanic | 95.36% | 64.52% | 83.65% |
| FAMILY | | | |
| Married, w/children | 35.82% | 29.53% | 30.42% |
| Married, no children | 47.65% | 37.78% | 42.46% |
| Single, w/children | 7.16% | 19.41% | 14.39% |
| Single, no children | 9.37% | 13.28% | 12.73% |
| Divorced | 8.09% | 10.12% | 10.62% |
| Separated | 2.37% | 3.19% | 4.97% |
| Widowed | 7.37% | 4.24% | 6.14% |
| Now Married | 55.07% | 33.22% | 46.32% |
| Never Married | 27.11% | 49.22% | 31.95% |
