| | Sussex, VA | Riverview, FL | United States |
| Population | 287 | 98,928 | 329,725,481 |
| Female Population | 37.6% | 51.9% | 50.5% |
| Male Population | 62.4% | 48.1% | 49.5% |
| Median Age | 51.3 | 36.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 516 | 65,328 | 309,327,143 |
| Population - 2000 | 187 | 12,035 | 285,036,114 |
| Population - 1990 | 188 | 6,478 | 251,960,433 |
| Pop. 2000 to Now | -6.4% | 704.4% | 15.6% |
| Pop. 1990 to Now | -6.9% | 1,394.4% | 30.8% |
| space4 | | | |
| Population Density | 61.1 | 2,141.1 | 93.4 |
| Land Area | 4.7 | 46.2 | 3,531,905.4 |
| Water Area | 0.0 | 1.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Sussex, VA | Riverview, FL | United States |
| Age 0 to 4 | 0.0% | 6.5% | 5.9% |
| Age 5 to 9 | 11.8% | 7.3% | 6.1% |
| Age 10 to 14 | 11.8% | 7.9% | 6.6% |
| Age 15 to 17 | 1.7% | 4.0% | 3.9% |
| Age 18 to 20 | 0.0% | 2.9% | 4.0% |
| Age 21 to 24 | 3.1% | 3.4% | 5.2% |
| Age 25 to 34 | 7.7% | 15.4% | 13.8% |
| Age 35 to 44 | 3.8% | 16.6% | 12.9% |
| Age 45 to 54 | 40.1% | 13.8% | 12.6% |
| Age 55 to 59 | 1.4% | 6.5% | 6.7% |
| Age 60 to 64 | 10.8% | 4.9% | 6.3% |
| Age 65 to 74 | 7.7% | 7.0% | 9.6% |
| Age 75 to 84 | 0.0% | 3.1% | 4.5% |
| Age 85 and over | 0.0% | 0.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Sussex, VA | Riverview, FL | United States |
| White | 88.9% | 47.7% | 59.4% |
| Black | 9.8% | 19.1% | 12.2% |
| Asian | 0.0% | 2.9% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.5% | 0.4% |
| Two or More Races | 0.0% | 3.9% | 3.2% |
| Hispanic | 1.4% | 25.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Sussex, VA | Riverview, FL | United States |
| Married Population | 80.4% | 52.9% | 49.8% |
| Currently Married | 72.1% | 51.4% | 48.0% |
| Married but Separated | 8.2% | 1.5% | 1.8% |
| Single Population | 19.6% | 47.1% | 50.2% |
| Never Married | 18.7% | 29.7% | 33.8% |
| Divorced | 0.9% | 13.1% | 10.8% |
| Widowed | 0.0% | 4.2% | 5.6% |
| space5 | | | |
| Household Size | 2.48 | 2.84 | 2.60 |
| Households | 104 | 34,871 | 124,010,992 |
| Family Households | 79 | 25,011 | 80,755,759 |
| Married couple, w/children | 60.8% | 35.1% | 30.5% |
| Married couple, no children | 39.2% | 37.5% | 42.9% |
| Non Family Households | 25 | 9,860 | 43,255,233 |
| Single householder, w/children | 0.0% | 17.0% | 15.8% |
| Single householder, no children | 0.0% | 10.3% | 10.8% |