| PEOPLE | Miami | Washington | United States |
| Population | 399,457 | 601,723 | 308,035,306 |
| Pop. Density | 11,136 | 9,856 | 87 |
| Pop. Change | 11.39% | 6.86% | 8.07% |
| Median Age | 38.8 | 33.9 | 37.3 |
| Households | 158,317 | 266,707 | 116,716,292 |
| Household Size | 2.46 | 2.1 | 2.58 |
| Male Population | 49.80% | 47.23% | 49.27% |
| Female Population | 50.20% | 52.77% | 50.96% |
| Married Population | 31.50% | 22.71% | 47.02% |
| Single Population | 68.50% | 77.29% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.98% | 5.42% | 6.56% |
| Age 5 to 9 | 4.77% | 4.35% | 6.61% |
| Age 10 to 14 | 4.60% | 4.16% | 6.71% |
| Age 15 to 17 | 3.04% | 2.83% | 4.21% |
| Age 18 to 20 | 2.24% | 3.81% | 2.95% |
| Age 21 to 24 | 7.17% | 10.65% | 7.01% |
| Age 25 to 34 | 16.48% | 20.73% | 13.33% |
| Age 35 to 44 | 14.89% | 13.40% | 13.33% |
| Age 45 to 49 | 14.04% | 12.58% | 14.61% |
| Age 50 to 54 | 14.04% | 12.58% | 14.61% |
| Age 55 to 59 | 10.79% | 10.63% | 11.84% |
| Age 60 to 64 | 10.79% | 10.63% | 11.84% |
| Age 65 to 74 | 8.03% | 6.14% | 7.05% |
| Age 75 to 84 | 5.69% | 3.58% | 4.24% |
| Age 85 and over | 2.29% | 1.71% | 1.78% |
| RACE | | | |
| White | 72.58% | 38.47% | 72.41% |
| Black | 19.25% | 50.71% | 12.61% |
| Asian | 0.99% | 3.50% | 4.75% |
| American Indian | 0.30% | 0.35% | 0.95% |
| Other | 6.89% | 6.98% | 9.28% |
| Hispanic | 7.50% | 4.31% | 16.35% |
| Non-Hispanic | 92.50% | 95.69% | 83.65% |
| FAMILY | | | |
| Married, w/children | 20.56% | 18.76% | 30.42% |
| Married, no children | 34.54% | 33.28% | 42.46% |
| Single, w/children | 19.31% | 21.98% | 14.39% |
| Single, no children | 25.58% | 25.97% | 12.73% |
| Divorced | 13.14% | 9.83% | 10.62% |
| Separated | 10.72% | 6.35% | 4.97% |
| Widowed | 8.45% | 6.02% | 6.14% |
| Now Married | 31.69% | 22.58% | 46.32% |
| Never Married | 36.01% | 55.21% | 31.95% |
