| PEOPLE | Iowa City | Ottawa | United States |
| Population | 67,862 | 18,768 | 308,035,306 |
| Pop. Density | 2,713 | 1,564 | 87 |
| Pop. Change | 8.94% | -1.72% | 8.07% |
| Median Age | 25.8 | 40.2 | 37.3 |
| Households | 27,657 | 7,783 | 116,716,292 |
| Household Size | 2.23 | 2.35 | 2.58 |
| Male Population | 49.74% | 48.81% | 49.27% |
| Female Population | 50.26% | 51.19% | 50.96% |
| Married Population | 32.39% | 50.35% | 47.02% |
| Single Population | 67.61% | 49.65% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.72% | 6.27% | 6.56% |
| Age 5 to 9 | 4.12% | 6.69% | 6.61% |
| Age 10 to 14 | 3.78% | 6.29% | 6.71% |
| Age 15 to 17 | 2.27% | 4.02% | 4.21% |
| Age 18 to 20 | 8.84% | 2.47% | 2.95% |
| Age 21 to 24 | 24.62% | 5.91% | 7.01% |
| Age 25 to 34 | 16.48% | 12.64% | 13.33% |
| Age 35 to 44 | 9.26% | 12.01% | 13.33% |
| Age 45 to 49 | 9.08% | 15.19% | 14.61% |
| Age 50 to 54 | 9.08% | 15.19% | 14.61% |
| Age 55 to 59 | 8.66% | 11.95% | 11.84% |
| Age 60 to 64 | 8.66% | 11.95% | 11.84% |
| Age 65 to 74 | 4.11% | 7.41% | 7.05% |
| Age 75 to 84 | 2.68% | 6.29% | 4.24% |
| Age 85 and over | 1.37% | 2.86% | 1.78% |
| RACE | | | |
| White | 82.53% | 93.39% | 72.41% |
| Black | 5.76% | 2.04% | 12.61% |
| Asian | 6.90% | 0.92% | 4.75% |
| American Indian | 0.21% | 0.31% | 0.95% |
| Other | 4.60% | 3.34% | 9.28% |
| Hispanic | 0.90% | 11.96% | 16.35% |
| Non-Hispanic | 99.10% | 88.04% | 83.65% |
| FAMILY | | | |
| Married, w/children | 31.69% | 27.88% | 30.42% |
| Married, no children | 44.78% | 44.04% | 42.46% |
| Single, w/children | 13.05% | 15.77% | 14.39% |
| Single, no children | 10.47% | 12.32% | 12.73% |
| Divorced | 8.07% | 11.38% | 10.62% |
| Separated | 1.84% | 1.94% | 4.97% |
| Widowed | 3.07% | 9.77% | 6.14% |
| Now Married | 32.91% | 49.83% | 46.32% |
| Never Married | 54.11% | 27.08% | 31.95% |
