| PEOPLE | Kennewick | Lehi | United States |
| Population | 73,917 | 47,407 | 308,035,306 |
| Pop. Density | 2,744 | 1,800 | 87 |
| Pop. Change | 26.12% | 140.95% | 8.07% |
| Median Age | 32.7 | 24.9 | 37.3 |
| Households | 27,266 | 12,402 | 116,716,292 |
| Household Size | 2.67 | 3.8 | 2.58 |
| Male Population | 49.92% | 50.18% | 49.27% |
| Female Population | 50.08% | 49.82% | 50.96% |
| Married Population | 46.25% | 65.56% | 47.02% |
| Single Population | 53.75% | 34.44% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.49% | 15.84% | 6.56% |
| Age 5 to 9 | 7.59% | 13.68% | 6.61% |
| Age 10 to 14 | 7.53% | 9.72% | 6.71% |
| Age 15 to 17 | 4.55% | 4.07% | 4.21% |
| Age 18 to 20 | 2.85% | 2.01% | 2.95% |
| Age 21 to 24 | 7.49% | 4.77% | 7.01% |
| Age 25 to 34 | 14.65% | 20.60% | 13.33% |
| Age 35 to 44 | 12.12% | 13.10% | 13.33% |
| Age 45 to 49 | 12.99% | 6.94% | 14.61% |
| Age 50 to 54 | 12.99% | 6.94% | 14.61% |
| Age 55 to 59 | 10.86% | 4.70% | 11.84% |
| Age 60 to 64 | 10.86% | 4.70% | 11.84% |
| Age 65 to 74 | 5.82% | 2.74% | 7.05% |
| Age 75 to 84 | 3.42% | 1.33% | 4.24% |
| Age 85 and over | 1.66% | 0.50% | 1.78% |
| RACE | | | |
| White | 78.54% | 92.65% | 72.41% |
| Black | 1.71% | 0.38% | 12.61% |
| Asian | 2.36% | 1.36% | 4.75% |
| American Indian | 0.85% | 0.44% | 0.95% |
| Other | 16.55% | 5.16% | 9.28% |
| Hispanic | 0.33% | 0.87% | 16.35% |
| Non-Hispanic | 99.67% | 99.13% | 83.65% |
| FAMILY | | | |
| Married, w/children | 32.80% | 61.87% | 30.42% |
| Married, no children | 39.75% | 26.53% | 42.46% |
| Single, w/children | 18.17% | 6.88% | 14.39% |
| Single, no children | 9.28% | 4.71% | 12.73% |
| Divorced | 12.49% | 6.72% | 10.62% |
| Separated | 5.00% | 2.16% | 4.97% |
| Widowed | 5.46% | 1.97% | 6.14% |
| Now Married | 47.16% | 66.51% | 46.32% |
| Never Married | 29.89% | 22.64% | 31.95% |
