| | Galena, OH | Melbourne, KY | United States |
| Population | 1,022 | 499 | 329,725,481 |
| Female Population | 50.3% | 55.3% | 50.5% |
| Male Population | 49.7% | 44.7% | 49.5% |
| Median Age | 37.1 | 55.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 666 | 462 | 309,327,143 |
| Population - 2000 | 305 | 457 | 285,036,114 |
| Population - 1990 | 361 | 660 | 251,960,433 |
| Pop. 2000 to Now | 146.9% | 6.6% | 15.6% |
| Pop. 1990 to Now | 108.6% | -26.2% | 30.8% |
| space4 | | | |
| Population Density | 639.6 | 590.5 | 93.4 |
| Land Area | 1.6 | 0.8 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Galena, OH | Melbourne, KY | United States |
| Age 0 to 4 | 7.6% | 3.8% | 5.9% |
| Age 5 to 9 | 5.3% | 8.2% | 6.1% |
| Age 10 to 14 | 9.7% | 5.8% | 6.6% |
| Age 15 to 17 | 3.0% | 1.0% | 3.9% |
| Age 18 to 20 | 7.9% | 2.2% | 4.0% |
| Age 21 to 24 | 3.3% | 2.0% | 5.2% |
| Age 25 to 34 | 10.5% | 10.2% | 13.8% |
| Age 35 to 44 | 14.8% | 7.2% | 12.9% |
| Age 45 to 54 | 13.4% | 9.4% | 12.6% |
| Age 55 to 59 | 6.2% | 5.4% | 6.7% |
| Age 60 to 64 | 6.8% | 15.2% | 6.3% |
| Age 65 to 74 | 8.4% | 15.0% | 9.6% |
| Age 75 to 84 | 2.3% | 13.4% | 4.5% |
| Age 85 and over | 0.7% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Galena, OH | Melbourne, KY | United States |
| White | 84.2% | 94.2% | 59.4% |
| Black | 6.7% | 0.4% | 12.2% |
| Asian | 2.0% | 0.0% | 5.6% |
| Native American | 0.5% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 6.0% | 5.4% | 3.2% |
| Hispanic | 0.7% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Galena, OH | Melbourne, KY | United States |
| Married Population | 55.8% | 41.2% | 49.8% |
| Currently Married | 54.1% | 41.2% | 48.0% |
| Married but Separated | 1.6% | 0.0% | 1.8% |
| Single Population | 44.2% | 58.8% | 50.2% |
| Never Married | 27.1% | 44.9% | 33.8% |
| Divorced | 14.5% | 7.8% | 10.8% |
| Widowed | 2.7% | 6.1% | 5.6% |
| space5 | | | |
| Household Size | 3.50 | 2.71 | 2.60 |
| Households | 292 | 155 | 124,010,992 |
| Family Households | 242 | 101 | 80,755,759 |
| Married couple, w/children | 39.3% | 22.8% | 30.5% |
| Married couple, no children | 40.9% | 58.4% | 42.9% |
| Non Family Households | 50 | 54 | 43,255,233 |
| Single householder, w/children | 12.8% | 13.9% | 15.8% |
| Single householder, no children | 7.0% | 5.0% | 10.8% |