| | Newell, SD | Truth or Consequences, NM | United States |
| Population | 591 | 6,078 | 329,725,481 |
| Female Population | 51.1% | 49.9% | 50.5% |
| Male Population | 48.9% | 50.1% | 49.5% |
| Median Age | 43.1 | 43.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 611 | 6,492 | 309,327,143 |
| Population - 2000 | 646 | 7,289 | 285,036,114 |
| Population - 1990 | 675 | 6,221 | 251,960,433 |
| Pop. 2000 to Now | -6.7% | -20.9% | 15.6% |
| Pop. 1990 to Now | -10.7% | -7.3% | 30.8% |
| space4 | | | |
| Population Density | 584.6 | 217.1 | 93.4 |
| Land Area | 1.0 | 28.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Newell, SD | Truth or Consequences, NM | United States |
| Age 0 to 4 | 0.7% | 4.1% | 5.9% |
| Age 5 to 9 | 4.9% | 4.7% | 6.1% |
| Age 10 to 14 | 13.5% | 7.0% | 6.6% |
| Age 15 to 17 | 7.4% | 4.8% | 3.9% |
| Age 18 to 20 | 10.8% | 2.7% | 4.0% |
| Age 21 to 24 | 0.0% | 1.5% | 5.2% |
| Age 25 to 34 | 7.4% | 10.5% | 13.8% |
| Age 35 to 44 | 7.1% | 16.5% | 12.9% |
| Age 45 to 54 | 20.6% | 10.5% | 12.6% |
| Age 55 to 59 | 5.9% | 4.5% | 6.7% |
| Age 60 to 64 | 1.9% | 8.7% | 6.3% |
| Age 65 to 74 | 12.4% | 15.5% | 9.6% |
| Age 75 to 84 | 4.1% | 7.2% | 4.5% |
| Age 85 and over | 3.2% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Newell, SD | Truth or Consequences, NM | United States |
| White | 80.9% | 58.6% | 59.4% |
| Black | 7.3% | 0.5% | 12.2% |
| Asian | 0.0% | 1.6% | 5.6% |
| Native American | 10.0% | 4.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 1.9% | 0.6% | 3.2% |
| Hispanic | 0.0% | 34.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Newell, SD | Truth or Consequences, NM | United States |
| Married Population | 51.0% | 39.9% | 49.8% |
| Currently Married | 49.4% | 38.4% | 48.0% |
| Married but Separated | 1.7% | 1.5% | 1.8% |
| Single Population | 49.0% | 60.1% | 50.2% |
| Never Married | 34.1% | 28.9% | 33.8% |
| Divorced | 4.8% | 18.2% | 10.8% |
| Widowed | 10.0% | 13.0% | 5.6% |
| space5 | | | |
| Household Size | 2.83 | 2.24 | 2.60 |
| Households | 209 | 2,607 | 124,010,992 |
| Family Households | 126 | 1,181 | 80,755,759 |
| Married couple, w/children | 38.1% | 20.6% | 30.5% |
| Married couple, no children | 50.8% | 49.4% | 42.9% |
| Non Family Households | 83 | 1,426 | 43,255,233 |
| Single householder, w/children | 4.8% | 21.3% | 15.8% |
| Single householder, no children | 6.3% | 8.7% | 10.8% |