| | Welch, WV | Wheeling, WV | United States |
| Population | 3,050 | 27,142 | 329,725,481 |
| Female Population | 34.5% | 52.3% | 50.5% |
| Male Population | 65.5% | 47.7% | 49.5% |
| Median Age | 45 | 43.6 | 38.4 |
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| Population - 2010 | 2,395 | 28,398 | 309,327,143 |
| Population - 2000 | 2,683 | 31,419 | 285,036,114 |
| Population - 1990 | 3,028 | 34,882 | 251,960,433 |
| Pop. 2000 to Now | -41.3% | -16.4% | 15.6% |
| Pop. 1990 to Now | -48.0% | -24.7% | 30.8% |
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| Population Density | 505.2 | 1,970.4 | 93.4 |
| Land Area | 6.0 | 13.8 | 3,531,905.4 |
| Water Area | 0.0 | 2.2 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Welch, WV | Wheeling, WV | United States |
| Age 0 to 4 | 0.0% | 5.7% | 5.9% |
| Age 5 to 9 | 4.7% | 4.8% | 6.1% |
| Age 10 to 14 | 4.0% | 6.0% | 6.6% |
| Age 15 to 17 | 0.3% | 3.8% | 3.9% |
| Age 18 to 20 | 0.5% | 4.2% | 4.0% |
| Age 21 to 24 | 4.3% | 4.3% | 5.2% |
| Age 25 to 34 | 13.9% | 11.1% | 13.8% |
| Age 35 to 44 | 22.4% | 11.4% | 12.9% |
| Age 45 to 54 | 14.2% | 10.2% | 12.6% |
| Age 55 to 59 | 11.5% | 6.4% | 6.7% |
| Age 60 to 64 | 5.5% | 8.1% | 6.3% |
| Age 65 to 74 | 11.4% | 13.2% | 9.6% |
| Age 75 to 84 | 5.0% | 6.7% | 4.5% |
| Age 85 and over | 2.2% | 4.0% | 1.9% |
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| Race | | | |
| | Welch, WV | Wheeling, WV | United States |
| White | 70.7% | 89.6% | 59.4% |
| Black | 22.0% | 4.5% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 0.3% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 1.5% | 3.3% | 3.2% |
| Hispanic | 5.5% | 1.5% | 18.4% |
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| Marriage & Family | | | |
| | Welch, WV | Wheeling, WV | United States |
| Married Population | 34.1% | 39.9% | 49.8% |
| Currently Married | 31.6% | 38.3% | 48.0% |
| Married but Separated | 2.5% | 1.7% | 1.8% |
| Single Population | 65.9% | 60.1% | 50.2% |
| Never Married | 36.1% | 36.7% | 33.8% |
| Divorced | 20.8% | 13.9% | 10.8% |
| Widowed | 9.0% | 9.5% | 5.6% |
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| Household Size | 2.19 | 2.22 | 2.60 |
| Households | 806 | 11,737 | 124,010,992 |
| Family Households | 418 | 5,896 | 80,755,759 |
| Married couple, w/children | 10.5% | 24.9% | 30.5% |
| Married couple, no children | 53.1% | 43.8% | 42.9% |
| Non Family Households | 388 | 5,841 | 43,255,233 |
| Single householder, w/children | 21.1% | 20.1% | 15.8% |
| Single householder, no children | 15.3% | 11.1% | 10.8% |