| PEOPLE | Mount Vernon | Longview | United States |
| Population | 31,743 | 36,648 | 308,035,306 |
| Pop. Density | 2,580 | 2,530 | 87 |
| Pop. Change | 17.25% | 4.03% | 8.07% |
| Median Age | 32.4 | 39.6 | 37.3 |
| Households | 11,342 | 15,281 | 116,716,292 |
| Household Size | 2.73 | 2.35 | 2.58 |
| Male Population | 49.03% | 48.11% | 49.27% |
| Female Population | 50.97% | 51.89% | 50.96% |
| Married Population | 45.88% | 40.36% | 47.02% |
| Single Population | 54.12% | 59.64% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.81% | 7.03% | 6.56% |
| Age 5 to 9 | 7.59% | 6.41% | 6.61% |
| Age 10 to 14 | 7.20% | 6.02% | 6.71% |
| Age 15 to 17 | 4.60% | 3.76% | 4.21% |
| Age 18 to 20 | 2.93% | 2.66% | 2.95% |
| Age 21 to 24 | 7.15% | 6.65% | 7.01% |
| Age 25 to 34 | 15.42% | 12.43% | 13.33% |
| Age 35 to 44 | 12.14% | 11.22% | 13.33% |
| Age 45 to 49 | 11.65% | 13.39% | 14.61% |
| Age 50 to 54 | 11.65% | 13.39% | 14.61% |
| Age 55 to 59 | 9.81% | 12.88% | 11.84% |
| Age 60 to 64 | 9.81% | 12.88% | 11.84% |
| Age 65 to 74 | 6.23% | 8.14% | 7.05% |
| Age 75 to 84 | 4.16% | 5.84% | 4.24% |
| Age 85 and over | 2.31% | 3.56% | 1.78% |
| RACE | | | |
| White | 72.83% | 85.95% | 72.41% |
| Black | 1.02% | 0.91% | 12.61% |
| Asian | 2.67% | 2.16% | 4.75% |
| American Indian | 1.62% | 1.72% | 0.95% |
| Other | 21.87% | 9.26% | 9.28% |
| Hispanic | 11.27% | 1.40% | 16.35% |
| Non-Hispanic | 88.73% | 98.60% | 83.65% |
| FAMILY | | | |
| Married, w/children | 34.09% | 23.75% | 30.42% |
| Married, no children | 38.48% | 44.29% | 42.46% |
| Single, w/children | 17.04% | 20.02% | 14.39% |
| Single, no children | 10.40% | 11.94% | 12.73% |
| Divorced | 9.97% | 15.74% | 10.62% |
| Separated | 6.50% | 4.23% | 4.97% |
| Widowed | 6.27% | 8.59% | 6.14% |
| Now Married | 45.83% | 41.07% | 46.32% |
| Never Married | 31.43% | 30.37% | 31.95% |
