| PEOPLE | Missoula | Somerset | United States |
| Population | 66,788 | 18,165 | 308,035,306 |
| Pop. Density | 2,428 | 2,299 | 87 |
| Pop. Change | 16.75% | -0.48% | 8.07% |
| Median Age | 31 | 45.4 | 37.3 |
| Households | 29,081 | 7,087 | 116,716,292 |
| Household Size | 2.18 | 2.52 | 2.58 |
| Male Population | 49.91% | 47.46% | 49.27% |
| Female Population | 50.09% | 52.54% | 50.96% |
| Married Population | 37.12% | 53.40% | 47.02% |
| Single Population | 62.88% | 46.60% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.73% | 4.39% | 6.56% |
| Age 5 to 9 | 4.99% | 5.36% | 6.61% |
| Age 10 to 14 | 4.34% | 5.76% | 6.71% |
| Age 15 to 17 | 2.83% | 3.77% | 4.21% |
| Age 18 to 20 | 4.74% | 2.14% | 2.95% |
| Age 21 to 24 | 15.03% | 4.67% | 7.01% |
| Age 25 to 34 | 18.72% | 9.32% | 13.33% |
| Age 35 to 44 | 10.87% | 13.95% | 13.33% |
| Age 45 to 49 | 11.52% | 15.65% | 14.61% |
| Age 50 to 54 | 11.52% | 15.65% | 14.61% |
| Age 55 to 59 | 10.57% | 13.54% | 11.84% |
| Age 60 to 64 | 10.57% | 13.54% | 11.84% |
| Age 65 to 74 | 5.24% | 9.60% | 7.05% |
| Age 75 to 84 | 3.46% | 7.70% | 4.24% |
| Age 85 and over | 1.95% | 4.16% | 1.78% |
| RACE | | | |
| White | 92.13% | 97.44% | 72.41% |
| Black | 0.53% | 0.37% | 12.61% |
| Asian | 1.21% | 0.81% | 4.75% |
| American Indian | 2.75% | 0.11% | 0.95% |
| Other | 3.38% | 1.26% | 9.28% |
| Hispanic | 16.78% | 1.63% | 16.35% |
| Non-Hispanic | 83.22% | 98.37% | 83.65% |
| FAMILY | | | |
| Married, w/children | 28.73% | 26.67% | 30.42% |
| Married, no children | 42.78% | 51.72% | 42.46% |
| Single, w/children | 17.46% | 8.71% | 14.39% |
| Single, no children | 11.03% | 12.90% | 12.73% |
| Divorced | 11.42% | 7.61% | 10.62% |
| Separated | 3.60% | 2.01% | 4.97% |
| Widowed | 4.39% | 9.51% | 6.14% |
| Now Married | 37.83% | 54.49% | 46.32% |
| Never Married | 42.75% | 26.39% | 31.95% |
