| | Madison, NC | Boonville, NC | United States |
| Population | 2,244 | 1,450 | 329,725,481 |
| Female Population | 51.7% | 54.0% | 50.5% |
| Male Population | 48.3% | 46.0% | 49.5% |
| Median Age | 50.3 | 37.8 | 38.4 |
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| Population - 2010 | 2,240 | 1,146 | 309,327,143 |
| Population - 2000 | 2,262 | 1,138 | 285,036,114 |
| Population - 1990 | 2,371 | 1,009 | 251,960,433 |
| Pop. 2000 to Now | -6.8% | -2.6% | 15.6% |
| Pop. 1990 to Now | -11.1% | 9.9% | 30.8% |
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| Population Density | 633.9 | 1,211.4 | 93.4 |
| Land Area | 3.5 | 1.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Madison, NC | Boonville, NC | United States |
| Age 0 to 4 | 3.7% | 4.3% | 5.9% |
| Age 5 to 9 | 4.2% | 6.6% | 6.1% |
| Age 10 to 14 | 3.6% | 9.9% | 6.6% |
| Age 15 to 17 | 2.5% | 3.7% | 3.9% |
| Age 18 to 20 | 2.6% | 3.4% | 4.0% |
| Age 21 to 24 | 5.8% | 4.8% | 5.2% |
| Age 25 to 34 | 12.3% | 9.2% | 13.8% |
| Age 35 to 44 | 7.8% | 14.2% | 12.9% |
| Age 45 to 54 | 14.3% | 11.9% | 12.6% |
| Age 55 to 59 | 12.9% | 5.8% | 6.7% |
| Age 60 to 64 | 7.9% | 4.6% | 6.3% |
| Age 65 to 74 | 10.8% | 8.4% | 9.6% |
| Age 75 to 84 | 7.4% | 10.7% | 4.5% |
| Age 85 and over | 4.0% | 2.5% | 1.9% |
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| Race | | | |
| | Madison, NC | Boonville, NC | United States |
| White | 66.6% | 84.1% | 59.4% |
| Black | 21.7% | 10.6% | 12.2% |
| Asian | 0.0% | 0.6% | 5.6% |
| Native American | 0.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.5% | 0.6% | 3.2% |
| Hispanic | 10.0% | 4.1% | 18.4% |
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| Marriage & Family | | | |
| | Madison, NC | Boonville, NC | United States |
| Married Population | 45.3% | 51.1% | 49.8% |
| Currently Married | 42.1% | 49.8% | 48.0% |
| Married but Separated | 3.3% | 1.3% | 1.8% |
| Single Population | 54.7% | 48.9% | 50.2% |
| Never Married | 31.8% | 20.5% | 33.8% |
| Divorced | 12.9% | 14.8% | 10.8% |
| Widowed | 9.9% | 13.7% | 5.6% |
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| Household Size | 2.22 | 2.41 | 2.60 |
| Households | 1,005 | 601 | 124,010,992 |
| Family Households | 592 | 295 | 80,755,759 |
| Married couple, w/children | 19.9% | 34.9% | 30.5% |
| Married couple, no children | 49.0% | 43.4% | 42.9% |
| Non Family Households | 413 | 306 | 43,255,233 |
| Single householder, w/children | 10.3% | 17.3% | 15.8% |
| Single householder, no children | 20.8% | 4.4% | 10.8% |