| | Long Hollow, SD | Breckenridge, MN | United States |
| Population | 395 | 3,439 | 329,725,481 |
| Female Population | 82.0% | 51.3% | 50.5% |
| Male Population | 18.0% | 48.7% | 49.5% |
| Median Age | 7.4 | 41.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 182 | 3,396 | 309,327,143 |
| Population - 2000 | 200 | 3,559 | 285,036,114 |
| Population - 1990 | 237 | 3,708 | 251,960,433 |
| Pop. 2000 to Now | 22.5% | -11.9% | 15.6% |
| Pop. 1990 to Now | 3.4% | -15.4% | 30.8% |
| space4 | | | |
| Population Density | 27.4 | 1,359.8 | 93.4 |
| Land Area | 14.4 | 2.5 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Long Hollow, SD | Breckenridge, MN | United States |
| Age 0 to 4 | 27.8% | 7.9% | 5.9% |
| Age 5 to 9 | 32.4% | 5.9% | 6.1% |
| Age 10 to 14 | 2.5% | 6.5% | 6.6% |
| Age 15 to 17 | 6.3% | 3.3% | 3.9% |
| Age 18 to 20 | 0.0% | 2.5% | 4.0% |
| Age 21 to 24 | 4.6% | 4.7% | 5.2% |
| Age 25 to 34 | 8.4% | 12.0% | 13.8% |
| Age 35 to 44 | 15.7% | 11.6% | 12.9% |
| Age 45 to 54 | 0.0% | 11.3% | 12.6% |
| Age 55 to 59 | 0.0% | 9.7% | 6.7% |
| Age 60 to 64 | 2.3% | 6.1% | 6.3% |
| Age 65 to 74 | 0.0% | 7.0% | 9.6% |
| Age 75 to 84 | 0.0% | 4.3% | 4.5% |
| Age 85 and over | 0.0% | 7.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Long Hollow, SD | Breckenridge, MN | United States |
| White | 2.3% | 91.8% | 59.4% |
| Black | 0.0% | 0.3% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 78.2% | 1.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 19.5% | 3.1% | 3.2% |
| Hispanic | 0.0% | 3.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Long Hollow, SD | Breckenridge, MN | United States |
| Married Population | 0.0% | 38.5% | 49.8% |
| Currently Married | 0.0% | 36.8% | 48.0% |
| Married but Separated | 0.0% | 1.7% | 1.8% |
| Single Population | 100.0% | 61.5% | 50.2% |
| Never Married | 86.4% | 37.6% | 33.8% |
| Divorced | 13.6% | 12.8% | 10.8% |
| Widowed | 0.0% | 11.0% | 5.6% |
| space5 | | | |
| Household Size | 3.56 | 2.22 | 2.60 |
| Households | 111 | 1,498 | 124,010,992 |
| Family Households | 92 | 764 | 80,755,759 |
| Married couple, w/children | 0.0% | 25.9% | 30.5% |
| Married couple, no children | 0.0% | 39.4% | 42.9% |
| Non Family Households | 19 | 734 | 43,255,233 |
| Single householder, w/children | 100.0% | 25.5% | 15.8% |
| Single householder, no children | 0.0% | 9.2% | 10.8% |