| | Rodeo, NM | Hermosa, SD | United States |
| Population | 57 | 397 | 329,725,481 |
| Female Population | 57.9% | 49.6% | 50.5% |
| Male Population | 42.1% | 50.4% | 49.5% |
| Median Age | 68.8 | 45.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 72 | 398 | 309,327,143 |
| Population - 2000 | 93 | 315 | 285,036,114 |
| Population - 1990 | 107 | 242 | 251,960,433 |
| Pop. 2000 to Now | -49.5% | 29.8% | 15.6% |
| Pop. 1990 to Now | -56.1% | 69.0% | 30.8% |
| space4 | | | |
| Population Density | 7.0 | 825.4 | 93.4 |
| Land Area | 8.2 | 0.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Rodeo, NM | Hermosa, SD | United States |
| Age 0 to 4 | 0.0% | 0.3% | 5.9% |
| Age 5 to 9 | 0.0% | 13.6% | 6.1% |
| Age 10 to 14 | 0.0% | 9.6% | 6.6% |
| Age 15 to 17 | 0.0% | 2.8% | 3.9% |
| Age 18 to 20 | 0.0% | 2.0% | 4.0% |
| Age 21 to 24 | 0.0% | 2.5% | 5.2% |
| Age 25 to 34 | 0.0% | 6.3% | 13.8% |
| Age 35 to 44 | 0.0% | 12.3% | 12.9% |
| Age 45 to 54 | 0.0% | 16.9% | 12.6% |
| Age 55 to 59 | 21.1% | 11.1% | 6.7% |
| Age 60 to 64 | 8.8% | 2.8% | 6.3% |
| Age 65 to 74 | 24.6% | 14.4% | 9.6% |
| Age 75 to 84 | 45.6% | 4.5% | 4.5% |
| Age 85 and over | 0.0% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Rodeo, NM | Hermosa, SD | United States |
| White | 54.4% | 65.7% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 1.0% | 5.6% |
| Native American | 0.0% | 6.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 5.3% | 3.2% |
| Hispanic | 45.6% | 21.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Rodeo, NM | Hermosa, SD | United States |
| Married Population | 91.2% | 51.6% | 49.8% |
| Currently Married | 91.2% | 50.3% | 48.0% |
| Married but Separated | 0.0% | 1.3% | 1.8% |
| Single Population | 8.8% | 48.4% | 50.2% |
| Never Married | 0.0% | 33.2% | 33.8% |
| Divorced | 8.8% | 12.5% | 10.8% |
| Widowed | 0.0% | 2.6% | 5.6% |
| space5 | | | |
| Household Size | 1.73 | 2.63 | 2.60 |
| Households | 33 | 151 | 124,010,992 |
| Family Households | 28 | 115 | 80,755,759 |
| Married couple, w/children | 0.0% | 13.9% | 30.5% |
| Married couple, no children | 100.0% | 56.5% | 42.9% |
| Non Family Households | 5 | 36 | 43,255,233 |
| Single householder, w/children | 0.0% | 18.3% | 15.8% |
| Single householder, no children | 0.0% | 11.3% | 10.8% |