| | Glen Allen, VA | Fountain Inn, SC | United States |
| Population | 14,783 | 10,237 | 329,725,481 |
| Female Population | 52.5% | 50.8% | 50.5% |
| Male Population | 47.5% | 49.2% | 49.5% |
| Median Age | 41 | 32.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 15,580 | 7,659 | 309,327,143 |
| Population - 2000 | 12,562 | 6,017 | 285,036,114 |
| Population - 1990 | 9,010 | 4,388 | 251,960,433 |
| Pop. 2000 to Now | 33.8% | 81.2% | 15.6% |
| Pop. 1990 to Now | 86.6% | 148.5% | 30.8% |
| space4 | | | |
| Population Density | 1,680.3 | 1,409.7 | 93.4 |
| Land Area | 8.8 | 7.3 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Glen Allen, VA | Fountain Inn, SC | United States |
| Age 0 to 4 | 6.3% | 8.8% | 5.9% |
| Age 5 to 9 | 7.5% | 8.4% | 6.1% |
| Age 10 to 14 | 6.8% | 8.0% | 6.6% |
| Age 15 to 17 | 2.7% | 3.4% | 3.9% |
| Age 18 to 20 | 2.9% | 2.8% | 4.0% |
| Age 21 to 24 | 3.8% | 4.6% | 5.2% |
| Age 25 to 34 | 11.1% | 18.3% | 13.8% |
| Age 35 to 44 | 14.1% | 15.4% | 12.9% |
| Age 45 to 54 | 15.9% | 10.6% | 12.6% |
| Age 55 to 59 | 5.8% | 7.6% | 6.7% |
| Age 60 to 64 | 7.6% | 4.4% | 6.3% |
| Age 65 to 74 | 11.2% | 4.9% | 9.6% |
| Age 75 to 84 | 2.9% | 2.4% | 4.5% |
| Age 85 and over | 1.3% | 0.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Glen Allen, VA | Fountain Inn, SC | United States |
| White | 58.6% | 59.3% | 59.4% |
| Black | 25.3% | 26.3% | 12.2% |
| Asian | 7.4% | 0.1% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.2% | 5.2% | 3.2% |
| Hispanic | 6.4% | 8.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Glen Allen, VA | Fountain Inn, SC | United States |
| Married Population | 53.4% | 58.8% | 49.8% |
| Currently Married | 51.6% | 57.4% | 48.0% |
| Married but Separated | 1.8% | 1.4% | 1.8% |
| Single Population | 46.6% | 41.2% | 50.2% |
| Never Married | 28.2% | 29.1% | 33.8% |
| Divorced | 13.8% | 8.4% | 10.8% |
| Widowed | 4.7% | 3.7% | 5.6% |
| space5 | | | |
| Household Size | 2.37 | 2.87 | 2.60 |
| Households | 6,218 | 3,547 | 124,010,992 |
| Family Households | 4,273 | 2,838 | 80,755,759 |
| Married couple, w/children | 29.1% | 41.5% | 30.5% |
| Married couple, no children | 40.2% | 32.8% | 42.9% |
| Non Family Households | 1,945 | 709 | 43,255,233 |
| Single householder, w/children | 18.0% | 17.4% | 15.8% |
| Single householder, no children | 12.8% | 8.3% | 10.8% |