| | War, WV | Keystone, WV | United States |
| Population | 679 | 68 | 329,725,481 |
| Female Population | 57.4% | 76.5% | 50.5% |
| Male Population | 42.6% | 23.5% | 49.5% |
| Median Age | 45.7 | 56.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 855 | 282 | 309,327,143 |
| Population - 2000 | 788 | 453 | 285,036,114 |
| Population - 1990 | 1,081 | 627 | 251,960,433 |
| Pop. 2000 to Now | -16.4% | -53.0% | 15.6% |
| Pop. 1990 to Now | -39.0% | -66.0% | 30.8% |
| space4 | | | |
| Population Density | 762.1 | 209.9 | 93.4 |
| Land Area | 0.9 | 0.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | War, WV | Keystone, WV | United States |
| Age 0 to 4 | 6.9% | 0.0% | 5.9% |
| Age 5 to 9 | 5.4% | 7.4% | 6.1% |
| Age 10 to 14 | 4.6% | 0.0% | 6.6% |
| Age 15 to 17 | 6.6% | 0.0% | 3.9% |
| Age 18 to 20 | 1.3% | 7.4% | 4.0% |
| Age 21 to 24 | 4.4% | 0.0% | 5.2% |
| Age 25 to 34 | 10.9% | 0.0% | 13.8% |
| Age 35 to 44 | 8.5% | 10.3% | 12.9% |
| Age 45 to 54 | 17.2% | 22.1% | 12.6% |
| Age 55 to 59 | 2.5% | 17.6% | 6.7% |
| Age 60 to 64 | 4.6% | 17.6% | 6.3% |
| Age 65 to 74 | 15.8% | 5.9% | 9.6% |
| Age 75 to 84 | 7.2% | 0.0% | 4.5% |
| Age 85 and over | 4.0% | 11.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | War, WV | Keystone, WV | United States |
| White | 99.0% | 20.6% | 59.4% |
| Black | 1.0% | 79.4% | 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% | 0.0% | 3.2% |
| Hispanic | 0.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | War, WV | Keystone, WV | United States |
| Married Population | 47.7% | 7.9% | 49.8% |
| Currently Married | 45.0% | 7.9% | 48.0% |
| Married but Separated | 2.7% | 0.0% | 1.8% |
| Single Population | 52.3% | 92.1% | 50.2% |
| Never Married | 22.9% | 54.0% | 33.8% |
| Divorced | 19.0% | 7.9% | 10.8% |
| Widowed | 10.5% | 30.2% | 5.6% |
| space5 | | | |
| Household Size | 3.03 | 1.66 | 2.60 |
| Households | 224 | 41 | 124,010,992 |
| Family Households | 173 | 9 | 80,755,759 |
| Married couple, w/children | 23.1% | 0.0% | 30.5% |
| Married couple, no children | 39.3% | 11.1% | 42.9% |
| Non Family Households | 51 | 32 | 43,255,233 |
| Single householder, w/children | 24.9% | 55.6% | 15.8% |
| Single householder, no children | 12.7% | 33.3% | 10.8% |