| PEOPLE | Philadelphia | Washington | United States |
| Population | 1,526,006 | 601,723 | 308,035,306 |
| Pop. Density | 11,379 | 9,856 | 87 |
| Pop. Change | 0.98% | 6.86% | 8.07% |
| Median Age | 33.6 | 33.9 | 37.3 |
| Households | 599,736 | 266,707 | 116,716,292 |
| Household Size | 2.45 | 2.1 | 2.58 |
| Male Population | 47.17% | 47.23% | 49.27% |
| Female Population | 52.83% | 52.77% | 50.96% |
| Married Population | 28.38% | 22.71% | 47.02% |
| Single Population | 71.62% | 77.29% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.62% | 5.42% | 6.56% |
| Age 5 to 9 | 5.95% | 4.35% | 6.61% |
| Age 10 to 14 | 5.94% | 4.16% | 6.71% |
| Age 15 to 17 | 4.02% | 2.83% | 4.21% |
| Age 18 to 20 | 3.73% | 3.81% | 2.95% |
| Age 21 to 24 | 9.61% | 10.65% | 7.01% |
| Age 25 to 34 | 16.12% | 20.73% | 13.33% |
| Age 35 to 44 | 12.34% | 13.40% | 13.33% |
| Age 45 to 49 | 12.97% | 12.58% | 14.61% |
| Age 50 to 54 | 12.97% | 12.58% | 14.61% |
| Age 55 to 59 | 10.54% | 10.63% | 11.84% |
| Age 60 to 64 | 10.54% | 10.63% | 11.84% |
| Age 65 to 74 | 6.21% | 6.14% | 7.05% |
| Age 75 to 84 | 4.09% | 3.58% | 4.24% |
| Age 85 and over | 1.84% | 1.71% | 1.78% |
| RACE | | | |
| White | 41.04% | 38.47% | 72.41% |
| Black | 43.37% | 50.71% | 12.61% |
| Asian | 6.32% | 3.50% | 4.75% |
| American Indian | 0.46% | 0.35% | 0.95% |
| Other | 8.82% | 6.98% | 9.28% |
| Hispanic | 15.76% | 4.31% | 16.35% |
| Non-Hispanic | 84.24% | 95.69% | 83.65% |
| FAMILY | | | |
| Married, w/children | 19.44% | 18.76% | 30.42% |
| Married, no children | 30.38% | 33.28% | 42.46% |
| Single, w/children | 24.39% | 21.98% | 14.39% |
| Single, no children | 25.78% | 25.97% | 12.73% |
| Divorced | 9.16% | 9.83% | 10.62% |
| Separated | 7.18% | 6.35% | 4.97% |
| Widowed | 8.16% | 6.02% | 6.14% |
| Now Married | 28.24% | 22.58% | 46.32% |
| Never Married | 47.27% | 55.21% | 31.95% |
