| | Poplar Hills, KY | Powderly, KY | United States |
| Population | 534 | 807 | 329,725,481 |
| Female Population | 52.6% | 51.4% | 50.5% |
| Male Population | 47.4% | 48.6% | 49.5% |
| Median Age | 34.2 | 51.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 409 | 737 | 309,327,143 |
| Population - 2000 | 396 | 846 | 285,036,114 |
| Population - 1990 | 377 | 748 | 251,960,433 |
| Pop. 2000 to Now | 6.8% | -13.0% | 15.6% |
| Pop. 1990 to Now | 12.2% | -1.6% | 30.8% |
| space4 | | | |
| Population Density | 21,360.0 | 516.3 | 93.4 |
| Land Area | 0.0 | 1.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Poplar Hills, KY | Powderly, KY | United States |
| Age 0 to 4 | 14.0% | 1.9% | 5.9% |
| Age 5 to 9 | 4.9% | 14.7% | 6.1% |
| Age 10 to 14 | 4.5% | 5.9% | 6.6% |
| Age 15 to 17 | 0.7% | 3.3% | 3.9% |
| Age 18 to 20 | 0.0% | 1.2% | 4.0% |
| Age 21 to 24 | 7.9% | 2.0% | 5.2% |
| Age 25 to 34 | 23.8% | 6.9% | 13.8% |
| Age 35 to 44 | 8.1% | 9.0% | 12.9% |
| Age 45 to 54 | 20.6% | 13.1% | 12.6% |
| Age 55 to 59 | 4.7% | 9.3% | 6.7% |
| Age 60 to 64 | 6.9% | 7.9% | 6.3% |
| Age 65 to 74 | 3.0% | 12.6% | 9.6% |
| Age 75 to 84 | 0.4% | 9.2% | 4.5% |
| Age 85 and over | 0.6% | 2.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Poplar Hills, KY | Powderly, KY | United States |
| White | 9.6% | 99.3% | 59.4% |
| Black | 27.9% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 0.2% | 3.2% |
| Hispanic | 62.5% | 0.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Poplar Hills, KY | Powderly, KY | United States |
| Married Population | 22.7% | 48.6% | 49.8% |
| Currently Married | 17.4% | 48.6% | 48.0% |
| Married but Separated | 5.4% | 0.0% | 1.8% |
| Single Population | 77.3% | 51.4% | 50.2% |
| Never Married | 40.8% | 20.8% | 33.8% |
| Divorced | 35.9% | 20.0% | 10.8% |
| Widowed | 0.5% | 10.6% | 5.6% |
| space5 | | | |
| Household Size | 1.62 | 2.81 | 2.60 |
| Households | 329 | 287 | 124,010,992 |
| Family Households | 71 | 202 | 80,755,759 |
| Married couple, w/children | 15.5% | 22.3% | 30.5% |
| Married couple, no children | 0.0% | 52.5% | 42.9% |
| Non Family Households | 258 | 85 | 43,255,233 |
| Single householder, w/children | 78.9% | 17.3% | 15.8% |
| Single householder, no children | 5.6% | 7.9% | 10.8% |