| | Severn, NC | Sebring, FL | United States |
| Population | 227 | 10,832 | 329,725,481 |
| Female Population | 56.8% | 51.7% | 50.5% |
| Male Population | 43.2% | 48.3% | 49.5% |
| Median Age | 34.3 | 46.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 275 | 10,038 | 309,327,143 |
| Population - 2000 | 263 | 9,667 | 285,036,114 |
| Population - 1990 | 260 | 8,900 | 251,960,433 |
| Pop. 2000 to Now | -9.5% | 9.5% | 15.6% |
| Pop. 1990 to Now | -8.5% | 19.0% | 30.8% |
| space4 | | | |
| Population Density | 224.5 | 1,069.9 | 93.4 |
| Land Area | 1.0 | 10.1 | 3,531,905.4 |
| Water Area | 0.0 | 5.9 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Severn, NC | Sebring, FL | United States |
| Age 0 to 4 | 10.1% | 4.6% | 5.9% |
| Age 5 to 9 | 4.4% | 2.0% | 6.1% |
| Age 10 to 14 | 14.5% | 7.1% | 6.6% |
| Age 15 to 17 | 1.3% | 2.7% | 3.9% |
| Age 18 to 20 | 0.0% | 4.1% | 4.0% |
| Age 21 to 24 | 0.0% | 6.0% | 5.2% |
| Age 25 to 34 | 24.2% | 11.8% | 13.8% |
| Age 35 to 44 | 7.0% | 9.8% | 12.9% |
| Age 45 to 54 | 2.6% | 10.8% | 12.6% |
| Age 55 to 59 | 5.3% | 4.8% | 6.7% |
| Age 60 to 64 | 10.1% | 6.3% | 6.3% |
| Age 65 to 74 | 16.7% | 14.9% | 9.6% |
| Age 75 to 84 | 3.5% | 11.2% | 4.5% |
| Age 85 and over | 0.0% | 4.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Severn, NC | Sebring, FL | United States |
| White | 59.9% | 54.9% | 59.4% |
| Black | 25.1% | 19.9% | 12.2% |
| Asian | 0.0% | 0.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 9.3% | 3.2% | 3.2% |
| Hispanic | 5.7% | 21.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Severn, NC | Sebring, FL | United States |
| Married Population | 57.8% | 41.7% | 49.8% |
| Currently Married | 54.0% | 39.2% | 48.0% |
| Married but Separated | 3.7% | 2.5% | 1.8% |
| Single Population | 42.2% | 58.3% | 50.2% |
| Never Married | 24.2% | 33.5% | 33.8% |
| Divorced | 13.7% | 16.3% | 10.8% |
| Widowed | 4.3% | 8.6% | 5.6% |
| space5 | | | |
| Household Size | 2.47 | 2.18 | 2.60 |
| Households | 92 | 4,595 | 124,010,992 |
| Family Households | 70 | 2,586 | 80,755,759 |
| Married couple, w/children | 25.7% | 14.7% | 30.5% |
| Married couple, no children | 30.0% | 46.5% | 42.9% |
| Non Family Households | 22 | 2,009 | 43,255,233 |
| Single householder, w/children | 27.1% | 22.0% | 15.8% |
| Single householder, no children | 17.1% | 16.8% | 10.8% |