| PEOPLE | Arapahoe | Challis | United States |
| Population | 1,656 | 1,081 | 308,035,306 |
| Pop. Density | 60 | 586 | 87 |
| Pop. Change | 7.78% | 3.46% | 8.07% |
| Median Age | 24.9 | 42.1 | 37.3 |
| Households | 415 | 502 | 116,716,292 |
| Household Size | 3.9 | 2.25 | 2.58 |
| Male Population | 49.70% | 55.04% | 49.27% |
| Female Population | 50.30% | 44.96% | 50.96% |
| Married Population | 30.24% | 61.06% | 47.02% |
| Single Population | 69.76% | 38.94% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 11.23% | 6.29% | 6.56% |
| Age 5 to 9 | 10.45% | 5.18% | 6.61% |
| Age 10 to 14 | 10.81% | 5.18% | 6.71% |
| Age 15 to 17 | 5.43% | 4.63% | 4.21% |
| Age 18 to 20 | 3.74% | 2.22% | 2.95% |
| Age 21 to 24 | 8.57% | 4.53% | 7.01% |
| Age 25 to 34 | 10.75% | 12.03% | 13.33% |
| Age 35 to 44 | 11.96% | 14.25% | 13.33% |
| Age 45 to 49 | 9.78% | 13.69% | 14.61% |
| Age 50 to 54 | 9.78% | 13.69% | 14.61% |
| Age 55 to 59 | 8.39% | 14.80% | 11.84% |
| Age 60 to 64 | 8.39% | 14.80% | 11.84% |
| Age 65 to 74 | 6.76% | 9.34% | 7.05% |
| Age 75 to 84 | 1.51% | 5.37% | 4.24% |
| Age 85 and over | 0.60% | 2.50% | 1.78% |
| RACE | | | |
| White | 16.85% | 93.62% | 72.41% |
| Black | 0.18% | 0.09% | 12.61% |
| Asian | 0.06% | 0.28% | 4.75% |
| American Indian | 80.25% | 0.83% | 0.95% |
| Other | 2.66% | 5.18% | 9.28% |
| Hispanic | 2.56% | 1.16% | 16.35% |
| Non-Hispanic | 97.44% | 98.84% | 83.65% |
| FAMILY | | | |
| Married, w/children | 27.33% | 28.52% | 30.42% |
| Married, no children | 22.52% | 50.18% | 42.46% |
| Single, w/children | 21.62% | 16.25% | 14.39% |
| Single, no children | 28.53% | 5.05% | 12.73% |
| Divorced | 16.21% | 13.35% | 10.62% |
| Separated | 5.77% | 1.28% | 4.97% |
| Widowed | 4.75% | 6.93% | 6.14% |
| Now Married | 29.88% | 62.13% | 46.32% |
| Never Married | 43.38% | 16.30% | 31.95% |
