| | Winfield, WV | Clarksburg, WV | United States |
| Population | 3,140 | 16,085 | 329,725,481 |
| Female Population | 49.1% | 52.2% | 50.5% |
| Male Population | 51.0% | 47.8% | 49.5% |
| Median Age | 37.5 | 39.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,370 | 16,832 | 309,327,143 |
| Population - 2000 | 1,858 | 16,743 | 285,036,114 |
| Population - 1990 | 1,164 | 18,059 | 251,960,433 |
| Pop. 2000 to Now | 29.7% | -7.9% | 15.6% |
| Pop. 1990 to Now | 107.0% | -14.6% | 30.8% |
| space4 | | | |
| Population Density | 1,304.0 | 1,653.0 | 93.4 |
| Land Area | 2.4 | 9.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Winfield, WV | Clarksburg, WV | United States |
| Age 0 to 4 | 6.6% | 5.3% | 5.9% |
| Age 5 to 9 | 7.9% | 5.5% | 6.1% |
| Age 10 to 14 | 6.1% | 6.9% | 6.6% |
| Age 15 to 17 | 6.4% | 4.7% | 3.9% |
| Age 18 to 20 | 5.2% | 3.4% | 4.0% |
| Age 21 to 24 | 2.6% | 4.3% | 5.2% |
| Age 25 to 34 | 14.1% | 12.4% | 13.8% |
| Age 35 to 44 | 10.6% | 12.8% | 12.9% |
| Age 45 to 54 | 12.2% | 11.8% | 12.6% |
| Age 55 to 59 | 5.8% | 7.2% | 6.7% |
| Age 60 to 64 | 11.8% | 9.0% | 6.3% |
| Age 65 to 74 | 6.1% | 9.7% | 9.6% |
| Age 75 to 84 | 4.7% | 4.5% | 4.5% |
| Age 85 and over | 0.1% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Winfield, WV | Clarksburg, WV | United States |
| White | 89.6% | 92.5% | 59.4% |
| Black | 3.0% | 2.4% | 12.2% |
| Asian | 4.1% | 0.5% | 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 | 3.3% | 3.6% | 3.2% |
| Hispanic | 0.0% | 0.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Winfield, WV | Clarksburg, WV | United States |
| Married Population | 66.7% | 42.7% | 49.8% |
| Currently Married | 63.4% | 41.1% | 48.0% |
| Married but Separated | 3.4% | 1.6% | 1.8% |
| Single Population | 33.3% | 57.3% | 50.2% |
| Never Married | 23.1% | 33.4% | 33.8% |
| Divorced | 6.7% | 17.5% | 10.8% |
| Widowed | 3.4% | 6.4% | 5.6% |
| space5 | | | |
| Household Size | 3.03 | 2.41 | 2.60 |
| Households | 1,036 | 6,588 | 124,010,992 |
| Family Households | 790 | 3,627 | 80,755,759 |
| Married couple, w/children | 44.6% | 30.2% | 30.5% |
| Married couple, no children | 45.6% | 37.7% | 42.9% |
| Non Family Households | 246 | 2,961 | 43,255,233 |
| Single householder, w/children | 8.6% | 18.8% | 15.8% |
| Single householder, no children | 1.3% | 13.3% | 10.8% |