| PEOPLE | Walla Walla | Twin Falls | United States |
| Population | 31,731 | 44,125 | 308,035,306 |
| Pop. Density | 2,478 | 2,437 | 87 |
| Pop. Change | 3.73% | 24.86% | 8.07% |
| Median Age | 34.4 | 32.1 | 37.3 |
| Households | 11,537 | 16,744 | 116,716,292 |
| Household Size | 2.44 | 2.59 | 2.58 |
| Male Population | 51.92% | 48.73% | 49.27% |
| Female Population | 48.08% | 51.27% | 50.96% |
| Married Population | 38.87% | 48.90% | 47.02% |
| Single Population | 61.13% | 51.10% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.22% | 8.85% | 6.56% |
| Age 5 to 9 | 6.23% | 7.63% | 6.61% |
| Age 10 to 14 | 5.91% | 6.69% | 6.71% |
| Age 15 to 17 | 3.63% | 3.79% | 4.21% |
| Age 18 to 20 | 4.63% | 3.42% | 2.95% |
| Age 21 to 24 | 9.91% | 8.41% | 7.01% |
| Age 25 to 34 | 14.24% | 15.38% | 13.33% |
| Age 35 to 44 | 12.04% | 11.07% | 13.33% |
| Age 45 to 49 | 12.42% | 11.52% | 14.61% |
| Age 50 to 54 | 12.42% | 11.52% | 14.61% |
| Age 55 to 59 | 10.73% | 9.84% | 11.84% |
| Age 60 to 64 | 10.73% | 9.84% | 11.84% |
| Age 65 to 74 | 6.04% | 6.68% | 7.05% |
| Age 75 to 84 | 4.91% | 4.42% | 4.24% |
| Age 85 and over | 3.08% | 2.30% | 1.78% |
| RACE | | | |
| White | 81.60% | 88.54% | 72.41% |
| Black | 2.69% | 0.65% | 12.61% |
| Asian | 1.43% | 1.79% | 4.75% |
| American Indian | 1.28% | 0.84% | 0.95% |
| Other | 13.00% | 8.18% | 9.28% |
| Hispanic | 1.39% | 0.00% | 16.35% |
| Non-Hispanic | 98.61% | 100.00% | 83.65% |
| FAMILY | | | |
| Married, w/children | 29.05% | 32.29% | 30.42% |
| Married, no children | 42.80% | 41.10% | 42.46% |
| Single, w/children | 17.18% | 16.23% | 14.39% |
| Single, no children | 10.97% | 10.38% | 12.73% |
| Divorced | 11.31% | 12.45% | 10.62% |
| Separated | 8.20% | 4.14% | 4.97% |
| Widowed | 7.81% | 7.14% | 6.14% |
| Now Married | 38.98% | 48.35% | 46.32% |
| Never Married | 33.71% | 27.92% | 31.95% |
