| PEOPLE | Portsmouth | Buffalo | United States |
| Population | 95,535 | 261,310 | 308,035,306 |
| Pop. Density | 2,839 | 6,471 | 87 |
| Pop. Change | -4.62% | -11.82% | 8.07% |
| Median Age | 35.7 | 33.4 | 37.3 |
| Households | 37,324 | 112,536 | 116,716,292 |
| Household Size | 2.47 | 2.24 | 2.58 |
| Male Population | 48.08% | 47.92% | 49.27% |
| Female Population | 51.92% | 52.08% | 50.96% |
| Married Population | 35.68% | 28.41% | 47.02% |
| Single Population | 64.32% | 71.59% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.38% | 6.66% | 6.56% |
| Age 5 to 9 | 6.63% | 6.27% | 6.61% |
| Age 10 to 14 | 5.88% | 6.38% | 6.71% |
| Age 15 to 17 | 3.84% | 4.26% | 4.21% |
| Age 18 to 20 | 2.70% | 3.93% | 2.95% |
| Age 21 to 24 | 7.72% | 9.97% | 7.01% |
| Age 25 to 34 | 15.01% | 14.56% | 13.33% |
| Age 35 to 44 | 11.97% | 11.68% | 13.33% |
| Age 45 to 49 | 14.09% | 14.00% | 14.61% |
| Age 50 to 54 | 14.09% | 14.00% | 14.61% |
| Age 55 to 59 | 11.58% | 10.89% | 11.84% |
| Age 60 to 64 | 11.58% | 10.89% | 11.84% |
| Age 65 to 74 | 6.66% | 5.91% | 7.05% |
| Age 75 to 84 | 4.41% | 3.90% | 4.24% |
| Age 85 and over | 2.14% | 1.60% | 1.78% |
| RACE | | | |
| White | 41.56% | 50.42% | 72.41% |
| Black | 53.26% | 38.56% | 12.61% |
| Asian | 1.07% | 3.22% | 4.75% |
| American Indian | 0.44% | 0.77% | 0.95% |
| Other | 3.68% | 7.03% | 9.28% |
| Hispanic | 3.18% | 1.33% | 16.35% |
| Non-Hispanic | 96.82% | 98.67% | 83.65% |
| FAMILY | | | |
| Married, w/children | 20.90% | 17.90% | 30.42% |
| Married, no children | 37.17% | 28.35% | 42.46% |
| Single, w/children | 21.18% | 30.73% | 14.39% |
| Single, no children | 20.75% | 23.03% | 12.73% |
| Divorced | 10.92% | 10.89% | 10.62% |
| Separated | 7.92% | 5.84% | 4.97% |
| Widowed | 7.44% | 7.96% | 6.14% |
| Now Married | 35.61% | 27.99% | 46.32% |
| Never Married | 38.12% | 47.33% | 31.95% |
