| PEOPLE | Cornwall | Seattle | United States |
| Population | 12,646 | 608,660 | 308,035,306 |
| Pop. Density | 474 | 7,251 | 87 |
| Pop. Change | 2.64% | 9.49% | 8.07% |
| Median Age | 41.7 | 36.2 | 37.3 |
| Households | 4,742 | 283,510 | 116,716,292 |
| Household Size | 2.64 | 2.06 | 2.58 |
| Male Population | 48.76% | 49.95% | 49.27% |
| Female Population | 51.24% | 50.05% | 50.96% |
| Married Population | 55.02% | 34.51% | 47.02% |
| Single Population | 44.98% | 65.49% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.50% | 5.26% | 6.56% |
| Age 5 to 9 | 6.84% | 4.26% | 6.61% |
| Age 10 to 14 | 7.94% | 3.63% | 6.71% |
| Age 15 to 17 | 5.31% | 2.21% | 4.21% |
| Age 18 to 20 | 2.24% | 2.82% | 2.95% |
| Age 21 to 24 | 4.68% | 9.02% | 7.01% |
| Age 25 to 34 | 9.00% | 20.80% | 13.33% |
| Age 35 to 44 | 13.77% | 16.38% | 13.33% |
| Age 45 to 49 | 17.82% | 13.23% | 14.61% |
| Age 50 to 54 | 17.82% | 13.23% | 14.61% |
| Age 55 to 59 | 13.44% | 11.63% | 11.84% |
| Age 60 to 64 | 13.44% | 11.63% | 11.84% |
| Age 65 to 74 | 6.57% | 5.43% | 7.05% |
| Age 75 to 84 | 4.82% | 3.30% | 4.24% |
| Age 85 and over | 2.09% | 2.03% | 1.78% |
| RACE | | | |
| White | 92.01% | 69.48% | 72.41% |
| Black | 1.98% | 7.94% | 12.61% |
| Asian | 1.73% | 13.84% | 4.75% |
| American Indian | 0.28% | 0.79% | 0.95% |
| Other | 4.01% | 7.96% | 9.28% |
| Hispanic | 1.30% | 0.00% | 16.35% |
| Non-Hispanic | 98.70% | 100.00% | 83.65% |
| FAMILY | | | |
| Married, w/children | 38.81% | 30.43% | 30.42% |
| Married, no children | 42.99% | 45.60% | 42.46% |
| Single, w/children | 10.16% | 11.67% | 14.39% |
| Single, no children | 8.04% | 12.30% | 12.73% |
| Divorced | 7.63% | 12.30% | 10.62% |
| Separated | 3.06% | 5.21% | 4.97% |
| Widowed | 5.88% | 5.12% | 6.14% |
| Now Married | 55.78% | 34.43% | 46.32% |
| Never Married | 27.64% | 42.94% | 31.95% |
