| | Ellendale, DE | Bath (Berkeley Springs), WV | United States |
| Population | 771 | 868 | 329,725,481 |
| Female Population | 41.4% | 45.6% | 50.5% |
| Male Population | 58.6% | 54.4% | 49.5% |
| Median Age | 17.3 | 42.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 370 | 615 | 309,327,143 |
| Population - 2000 | 327 | 663 | 285,036,114 |
| Population - 1990 | 313 | 735 | 251,960,433 |
| Pop. 2000 to Now | 37.0% | -11.5% | 15.6% |
| Pop. 1990 to Now | 43.1% | -20.1% | 30.8% |
| space4 | | | |
| Population Density | 1,744.3 | 2,583.3 | 93.4 |
| Land Area | 0.4 | 0.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ellendale, DE | Bath (Berkeley Springs), WV | United States |
| Age 0 to 4 | 24.5% | 1.6% | 5.9% |
| Age 5 to 9 | 11.7% | 3.5% | 6.1% |
| Age 10 to 14 | 8.9% | 12.6% | 6.6% |
| Age 15 to 17 | 6.0% | 6.2% | 3.9% |
| Age 18 to 20 | 3.5% | 1.8% | 4.0% |
| Age 21 to 24 | 0.5% | 6.6% | 5.2% |
| Age 25 to 34 | 8.9% | 8.5% | 13.8% |
| Age 35 to 44 | 10.9% | 11.8% | 12.9% |
| Age 45 to 54 | 9.7% | 10.0% | 12.6% |
| Age 55 to 59 | 3.1% | 6.8% | 6.7% |
| Age 60 to 64 | 5.4% | 3.3% | 6.3% |
| Age 65 to 74 | 4.0% | 21.4% | 9.6% |
| Age 75 to 84 | 1.4% | 3.5% | 4.5% |
| Age 85 and over | 1.3% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ellendale, DE | Bath (Berkeley Springs), WV | United States |
| White | 33.3% | 77.3% | 59.4% |
| Black | 28.8% | 0.1% | 12.2% |
| Asian | 0.4% | 0.0% | 5.6% |
| Native American | 0.0% | 1.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 9.9% | 0.4% |
| Two or More Races | 2.6% | 1.2% | 3.2% |
| Hispanic | 34.9% | 10.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ellendale, DE | Bath (Berkeley Springs), WV | United States |
| Married Population | 42.6% | 39.2% | 49.8% |
| Currently Married | 39.7% | 33.7% | 48.0% |
| Married but Separated | 2.8% | 5.5% | 1.8% |
| Single Population | 57.4% | 60.8% | 50.2% |
| Never Married | 40.2% | 35.7% | 33.8% |
| Divorced | 12.3% | 9.7% | 10.8% |
| Widowed | 5.0% | 15.5% | 5.6% |
| space5 | | | |
| Household Size | 3.86 | 2.00 | 2.60 |
| Households | 200 | 434 | 124,010,992 |
| Family Households | 178 | 139 | 80,755,759 |
| Married couple, w/children | 22.5% | 45.3% | 30.5% |
| Married couple, no children | 21.3% | 33.1% | 42.9% |
| Non Family Households | 22 | 295 | 43,255,233 |
| Single householder, w/children | 49.4% | 16.5% | 15.8% |
| Single householder, no children | 6.7% | 5.0% | 10.8% |