| | Wilson, NC | Smithfield, VA | United States |
| Population | 47,914 | 8,513 | 329,725,481 |
| Female Population | 54.3% | 50.1% | 50.5% |
| Male Population | 45.7% | 49.9% | 49.5% |
| Median Age | 38.1 | 46.1 | 38.4 |
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| Population - 2010 | 49,203 | 8,101 | 309,327,143 |
| Population - 2000 | 44,405 | 6,324 | 285,036,114 |
| Population - 1990 | 36,930 | 4,686 | 251,960,433 |
| Pop. 2000 to Now | 11.4% | 36.2% | 15.6% |
| Pop. 1990 to Now | 34.0% | 83.9% | 30.8% |
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| Population Density | 1,541.9 | 902.9 | 93.4 |
| Land Area | 31.1 | 9.4 | 3,531,905.4 |
| Water Area | 0.9 | 0.9 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Wilson, NC | Smithfield, VA | United States |
| Age 0 to 4 | 5.4% | 7.5% | 5.9% |
| Age 5 to 9 | 6.4% | 3.9% | 6.1% |
| Age 10 to 14 | 8.1% | 5.1% | 6.6% |
| Age 15 to 17 | 3.9% | 4.0% | 3.9% |
| Age 18 to 20 | 4.6% | 3.3% | 4.0% |
| Age 21 to 24 | 4.8% | 3.3% | 5.2% |
| Age 25 to 34 | 12.7% | 13.1% | 13.8% |
| Age 35 to 44 | 11.1% | 9.0% | 12.9% |
| Age 45 to 54 | 12.4% | 15.2% | 12.6% |
| Age 55 to 59 | 6.9% | 9.8% | 6.7% |
| Age 60 to 64 | 6.4% | 7.2% | 6.3% |
| Age 65 to 74 | 10.6% | 9.5% | 9.6% |
| Age 75 to 84 | 4.5% | 6.8% | 4.5% |
| Age 85 and over | 2.2% | 2.2% | 1.9% |
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| Race | | | |
| | Wilson, NC | Smithfield, VA | United States |
| White | 36.9% | 71.2% | 59.4% |
| Black | 48.0% | 20.3% | 12.2% |
| Asian | 1.4% | 0.1% | 5.6% |
| Native American | 0.3% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.2% | 0.0% | 0.4% |
| Two or More Races | 1.9% | 1.7% | 3.2% |
| Hispanic | 11.4% | 6.4% | 18.4% |
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| Marriage & Family | | | |
| | Wilson, NC | Smithfield, VA | United States |
| Married Population | 42.6% | 58.6% | 49.8% |
| Currently Married | 39.1% | 56.7% | 48.0% |
| Married but Separated | 3.5% | 1.9% | 1.8% |
| Single Population | 57.4% | 41.4% | 50.2% |
| Never Married | 37.2% | 25.0% | 33.8% |
| Divorced | 13.0% | 9.8% | 10.8% |
| Widowed | 7.2% | 6.7% | 5.6% |
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| Household Size | 2.39 | 2.49 | 2.60 |
| Households | 19,535 | 3,394 | 124,010,992 |
| Family Households | 11,779 | 2,344 | 80,755,759 |
| Married couple, w/children | 24.5% | 28.0% | 30.5% |
| Married couple, no children | 36.3% | 52.5% | 42.9% |
| Non Family Households | 7,756 | 1,050 | 43,255,233 |
| Single householder, w/children | 25.9% | 11.0% | 15.8% |
| Single householder, no children | 13.3% | 8.4% | 10.8% |