| | Northfork, WV | War, WV | United States |
| Population | 367 | 679 | 329,725,481 |
| Female Population | 61.0% | 57.4% | 50.5% |
| Male Population | 39.0% | 42.6% | 49.5% |
| Median Age | 36.9 | 45.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 427 | 855 | 309,327,143 |
| Population - 2000 | 519 | 788 | 285,036,114 |
| Population - 1990 | 656 | 1,081 | 251,960,433 |
| Pop. 2000 to Now | -38.0% | -16.4% | 15.6% |
| Pop. 1990 to Now | -50.9% | -39.0% | 30.8% |
| space4 | | | |
| Population Density | 380.7 | 762.1 | 93.4 |
| Land Area | 1.0 | 0.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Northfork, WV | War, WV | United States |
| Age 0 to 4 | 7.6% | 6.9% | 5.9% |
| Age 5 to 9 | 9.8% | 5.4% | 6.1% |
| Age 10 to 14 | 2.2% | 4.6% | 6.6% |
| Age 15 to 17 | 4.4% | 6.6% | 3.9% |
| Age 18 to 20 | 5.5% | 1.3% | 4.0% |
| Age 21 to 24 | 1.1% | 4.4% | 5.2% |
| Age 25 to 34 | 18.0% | 10.9% | 13.8% |
| Age 35 to 44 | 10.6% | 8.5% | 12.9% |
| Age 45 to 54 | 11.7% | 17.2% | 12.6% |
| Age 55 to 59 | 8.7% | 2.5% | 6.7% |
| Age 60 to 64 | 7.6% | 4.6% | 6.3% |
| Age 65 to 74 | 10.9% | 15.8% | 9.6% |
| Age 75 to 84 | 0.0% | 7.2% | 4.5% |
| Age 85 and over | 1.9% | 4.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Northfork, WV | War, WV | United States |
| White | 65.9% | 99.0% | 59.4% |
| Black | 34.1% | 1.0% | 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% | 0.0% | 3.2% |
| Hispanic | 0.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Northfork, WV | War, WV | United States |
| Married Population | 50.8% | 47.7% | 49.8% |
| Currently Married | 45.8% | 45.0% | 48.0% |
| Married but Separated | 5.1% | 2.7% | 1.8% |
| Single Population | 49.2% | 52.3% | 50.2% |
| Never Married | 31.9% | 22.9% | 33.8% |
| Divorced | 4.1% | 19.0% | 10.8% |
| Widowed | 13.2% | 10.5% | 5.6% |
| space5 | | | |
| Household Size | 3.78 | 3.03 | 2.60 |
| Households | 97 | 224 | 124,010,992 |
| Family Households | 77 | 173 | 80,755,759 |
| Married couple, w/children | 16.9% | 23.1% | 30.5% |
| Married couple, no children | 41.6% | 39.3% | 42.9% |
| Non Family Households | 20 | 51 | 43,255,233 |
| Single householder, w/children | 11.7% | 24.9% | 15.8% |
| Single householder, no children | 29.9% | 12.7% | 10.8% |