| PEOPLE | Heart Butte | Salinas | United States |
| Population | 582 | 150,441 | 308,035,306 |
| Pop. Density | 128 | 6,490 | 87 |
| Pop. Change | -3.91% | -0.64% | 8.07% |
| Median Age | 24.6 | 28.8 | 37.3 |
| Households | 137 | 40,387 | 116,716,292 |
| Household Size | 3.87 | 3.68 | 2.58 |
| Male Population | 46.56% | 50.52% | 49.27% |
| Female Population | 53.44% | 49.48% | 50.96% |
| Married Population | 34.19% | 38.55% | 47.02% |
| Single Population | 65.81% | 61.45% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 13.06% | 9.55% | 6.56% |
| Age 5 to 9 | 12.37% | 8.69% | 6.61% |
| Age 10 to 14 | 8.42% | 8.03% | 6.71% |
| Age 15 to 17 | 4.12% | 5.09% | 4.21% |
| Age 18 to 20 | 3.61% | 3.52% | 2.95% |
| Age 21 to 24 | 9.28% | 8.48% | 7.01% |
| Age 25 to 34 | 12.37% | 16.52% | 13.33% |
| Age 35 to 44 | 10.65% | 13.38% | 13.33% |
| Age 45 to 49 | 13.40% | 11.47% | 14.61% |
| Age 50 to 54 | 13.40% | 11.47% | 14.61% |
| Age 55 to 59 | 7.90% | 7.79% | 11.84% |
| Age 60 to 64 | 7.90% | 7.79% | 11.84% |
| Age 65 to 74 | 3.44% | 3.83% | 7.05% |
| Age 75 to 84 | 1.37% | 2.53% | 4.24% |
| Age 85 and over | 0.00% | 1.13% | 1.78% |
| RACE | | | |
| White | 1.55% | 45.85% | 72.41% |
| Black | 0.00% | 1.99% | 12.61% |
| Asian | 0.00% | 6.27% | 4.75% |
| American Indian | 97.42% | 1.25% | 0.95% |
| Other | 1.03% | 44.63% | 9.28% |
| Hispanic | 1.09% | 6.55% | 16.35% |
| Non-Hispanic | 98.91% | 93.45% | 83.65% |
| FAMILY | | | |
| Married, w/children | 26.50% | 40.31% | 30.42% |
| Married, no children | 33.33% | 27.53% | 42.46% |
| Single, w/children | 19.66% | 18.67% | 14.39% |
| Single, no children | 20.51% | 13.49% | 12.73% |
| Divorced | 5.83% | 8.60% | 10.62% |
| Separated | 8.33% | 11.37% | 4.97% |
| Widowed | 2.29% | 4.49% | 6.14% |
| Now Married | 33.96% | 38.80% | 46.32% |
| Never Married | 49.58% | 36.74% | 31.95% |
