| PEOPLE | Rockford | Johnsburg | United States |
| Population | 152,871 | 6,337 | 308,035,306 |
| Pop. Density | 2,503 | 895 | 87 |
| Pop. Change | -1.20% | 10.46% | 8.07% |
| Median Age | 35.8 | 41.1 | 37.3 |
| Households | 59,973 | 2,199 | 116,716,292 |
| Household Size | 2.47 | 2.8 | 2.58 |
| Male Population | 48.32% | 51.07% | 49.27% |
| Female Population | 51.68% | 48.93% | 50.96% |
| Married Population | 39.74% | 54.45% | 47.02% |
| Single Population | 60.26% | 45.55% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.63% | 4.94% | 6.56% |
| Age 5 to 9 | 7.15% | 7.23% | 6.61% |
| Age 10 to 14 | 6.98% | 7.95% | 6.71% |
| Age 15 to 17 | 4.11% | 6.31% | 4.21% |
| Age 18 to 20 | 2.68% | 2.97% | 2.95% |
| Age 21 to 24 | 6.59% | 5.24% | 7.01% |
| Age 25 to 34 | 13.79% | 7.50% | 13.33% |
| Age 35 to 44 | 12.65% | 14.31% | 13.33% |
| Age 45 to 49 | 13.43% | 19.35% | 14.61% |
| Age 50 to 54 | 13.43% | 19.35% | 14.61% |
| Age 55 to 59 | 11.13% | 13.44% | 11.84% |
| Age 60 to 64 | 11.13% | 13.44% | 11.84% |
| Age 65 to 74 | 6.51% | 7.20% | 7.05% |
| Age 75 to 84 | 4.75% | 2.62% | 4.24% |
| Age 85 and over | 2.60% | 0.95% | 1.78% |
| RACE | | | |
| White | 65.10% | 97.24% | 72.41% |
| Black | 20.51% | 0.36% | 12.61% |
| Asian | 2.91% | 0.65% | 4.75% |
| American Indian | 0.40% | 0.13% | 0.95% |
| Other | 11.08% | 1.63% | 9.28% |
| Hispanic | 3.39% | 7.09% | 16.35% |
| Non-Hispanic | 96.61% | 92.91% | 83.65% |
| FAMILY | | | |
| Married, w/children | 24.89% | 38.00% | 30.42% |
| Married, no children | 37.72% | 47.81% | 42.46% |
| Single, w/children | 22.48% | 6.95% | 14.39% |
| Single, no children | 14.90% | 7.23% | 12.73% |
| Divorced | 13.94% | 9.31% | 10.62% |
| Separated | 5.05% | 1.21% | 4.97% |
| Widowed | 7.77% | 3.51% | 6.14% |
| Now Married | 39.37% | 55.13% | 46.32% |
| Never Married | 33.87% | 30.85% | 31.95% |
