| | Coal City, WV | Trinity, NC | United States |
| Population | 1,477 | 6,981 | 329,725,481 |
| Female Population | 44.8% | 52.1% | 50.5% |
| Male Population | 55.2% | 47.9% | 49.5% |
| Median Age | 54.4 | 44 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,655 | 6,600 | 309,327,143 |
| Population - 2000 | 1,905 | 6,690 | 285,036,114 |
| Population - 1990 | 1,876 | 5,469 | 251,960,433 |
| Pop. 2000 to Now | -9.9% | -0.8% | 15.6% |
| Pop. 1990 to Now | -8.5% | 21.4% | 30.8% |
| space4 | | | |
| Population Density | 234.2 | 413.7 | 93.4 |
| Land Area | 6.3 | 16.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Coal City, WV | Trinity, NC | United States |
| Age 0 to 4 | 9.7% | 5.3% | 5.9% |
| Age 5 to 9 | 6.5% | 8.4% | 6.1% |
| Age 10 to 14 | 0.0% | 6.1% | 6.6% |
| Age 15 to 17 | 2.2% | 3.8% | 3.9% |
| Age 18 to 20 | 1.0% | 2.2% | 4.0% |
| Age 21 to 24 | 3.3% | 3.4% | 5.2% |
| Age 25 to 34 | 4.9% | 12.0% | 13.8% |
| Age 35 to 44 | 7.9% | 9.8% | 12.9% |
| Age 45 to 54 | 16.7% | 10.7% | 12.6% |
| Age 55 to 59 | 9.7% | 7.9% | 6.7% |
| Age 60 to 64 | 4.5% | 6.9% | 6.3% |
| Age 65 to 74 | 15.6% | 16.9% | 9.6% |
| Age 75 to 84 | 14.2% | 5.0% | 4.5% |
| Age 85 and over | 3.8% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Coal City, WV | Trinity, NC | United States |
| White | 100.0% | 90.1% | 59.4% |
| Black | 0.0% | 3.6% | 12.2% |
| Asian | 0.0% | 2.6% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 1.4% | 3.2% |
| Hispanic | 0.0% | 2.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Coal City, WV | Trinity, NC | United States |
| Married Population | 45.2% | 55.2% | 49.8% |
| Currently Married | 45.2% | 53.9% | 48.0% |
| Married but Separated | 0.0% | 1.3% | 1.8% |
| Single Population | 54.8% | 44.8% | 50.2% |
| Never Married | 20.7% | 27.2% | 33.8% |
| Divorced | 12.4% | 11.3% | 10.8% |
| Widowed | 21.8% | 6.3% | 5.6% |
| space5 | | | |
| Household Size | 1.86 | 2.60 | 2.60 |
| Households | 796 | 2,685 | 124,010,992 |
| Family Households | 384 | 1,871 | 80,755,759 |
| Married couple, w/children | 22.1% | 26.7% | 30.5% |
| Married couple, no children | 32.6% | 51.0% | 42.9% |
| Non Family Households | 412 | 814 | 43,255,233 |
| Single householder, w/children | 30.7% | 15.0% | 15.8% |
| Single householder, no children | 14.6% | 7.3% | 10.8% |