| | Franklin, WV | Grantsville, MD | United States |
| Population | 402 | 752 | 329,725,481 |
| Female Population | 59.2% | 61.6% | 50.5% |
| Male Population | 40.8% | 38.4% | 49.5% |
| Median Age | 51.7 | 51.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 721 | 896 | 309,327,143 |
| Population - 2000 | 797 | 619 | 285,036,114 |
| Population - 1990 | 914 | 505 | 251,960,433 |
| Pop. 2000 to Now | -20.0% | 39.7% | 15.6% |
| Pop. 1990 to Now | -30.2% | 71.3% | 30.8% |
| space4 | | | |
| Population Density | 715.3 | 725.2 | 93.4 |
| Land Area | 0.6 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Franklin, WV | Grantsville, MD | United States |
| Age 0 to 4 | 4.0% | 0.8% | 5.9% |
| Age 5 to 9 | 2.5% | 6.1% | 6.1% |
| Age 10 to 14 | 5.7% | 10.2% | 6.6% |
| Age 15 to 17 | 3.0% | 2.0% | 3.9% |
| Age 18 to 20 | 0.0% | 1.6% | 4.0% |
| Age 21 to 24 | 0.0% | 1.7% | 5.2% |
| Age 25 to 34 | 17.9% | 6.9% | 13.8% |
| Age 35 to 44 | 12.9% | 10.6% | 12.9% |
| Age 45 to 54 | 7.2% | 14.8% | 12.6% |
| Age 55 to 59 | 3.7% | 4.8% | 6.7% |
| Age 60 to 64 | 7.0% | 3.3% | 6.3% |
| Age 65 to 74 | 17.4% | 12.2% | 9.6% |
| Age 75 to 84 | 11.2% | 17.2% | 4.5% |
| Age 85 and over | 7.5% | 7.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Franklin, WV | Grantsville, MD | United States |
| White | 99.3% | 98.7% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.8% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.7% | 0.0% | 3.2% |
| Hispanic | 0.0% | 0.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Franklin, WV | Grantsville, MD | United States |
| Married Population | 48.2% | 41.9% | 49.8% |
| Currently Married | 48.2% | 40.9% | 48.0% |
| Married but Separated | 0.0% | 1.0% | 1.8% |
| Single Population | 51.8% | 58.1% | 50.2% |
| Never Married | 21.8% | 21.5% | 33.8% |
| Divorced | 13.6% | 15.9% | 10.8% |
| Widowed | 16.4% | 20.7% | 5.6% |
| space5 | | | |
| Household Size | 2.19 | 1.94 | 2.60 |
| Households | 144 | 336 | 124,010,992 |
| Family Households | 77 | 151 | 80,755,759 |
| Married couple, w/children | 45.5% | 29.8% | 30.5% |
| Married couple, no children | 54.5% | 41.1% | 42.9% |
| Non Family Households | 67 | 185 | 43,255,233 |
| Single householder, w/children | 0.0% | 25.2% | 15.8% |
| Single householder, no children | 0.0% | 4.0% | 10.8% |