| | Woodbridge, VA | Magnolia, TX | United States |
| Population | 42,734 | 2,303 | 329,725,481 |
| Female Population | 52.0% | 52.4% | 50.5% |
| Male Population | 48.0% | 47.6% | 49.5% |
| Median Age | 33.9 | 36.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,984 | 1,395 | 309,327,143 |
| Population - 2000 | 31,941 | 1,111 | 285,036,114 |
| Population - 1990 | 26,401 | 940 | 251,960,433 |
| Pop. 2000 to Now | -85.4% | 100.2% | 15.6% |
| Pop. 1990 to Now | -82.3% | 136.6% | 30.8% |
| space4 | | | |
| Population Density | 26,692.1 | 812.6 | 93.4 |
| Land Area | 1.6 | 2.8 | 3,531,905.4 |
| Water Area | 0.6 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Woodbridge, VA | Magnolia, TX | United States |
| Age 0 to 4 | 7.4% | 6.5% | 5.9% |
| Age 5 to 9 | 9.0% | 9.7% | 6.1% |
| Age 10 to 14 | 5.7% | 6.6% | 6.6% |
| Age 15 to 17 | 3.4% | 1.9% | 3.9% |
| Age 18 to 20 | 3.9% | 5.3% | 4.0% |
| Age 21 to 24 | 7.0% | 4.9% | 5.2% |
| Age 25 to 34 | 16.1% | 13.7% | 13.8% |
| Age 35 to 44 | 14.8% | 11.9% | 12.9% |
| Age 45 to 54 | 13.0% | 10.3% | 12.6% |
| Age 55 to 59 | 5.7% | 7.0% | 6.7% |
| Age 60 to 64 | 4.6% | 7.6% | 6.3% |
| Age 65 to 74 | 6.6% | 8.4% | 9.6% |
| Age 75 to 84 | 1.9% | 5.0% | 4.5% |
| Age 85 and over | 0.9% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Woodbridge, VA | Magnolia, TX | United States |
| White | 21.2% | 65.3% | 59.4% |
| Black | 21.9% | 13.7% | 12.2% |
| Asian | 9.4% | 0.2% | 5.6% |
| Native American | 0.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.2% | 0.1% | 0.2% |
| Other | 0.6% | 3.0% | 0.4% |
| Two or More Races | 4.2% | 2.4% | 3.2% |
| Hispanic | 42.3% | 15.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Woodbridge, VA | Magnolia, TX | United States |
| Married Population | 49.3% | 57.9% | 49.8% |
| Currently Married | 45.3% | 56.4% | 48.0% |
| Married but Separated | 4.0% | 1.5% | 1.8% |
| Single Population | 50.7% | 42.1% | 50.2% |
| Never Married | 36.3% | 23.1% | 33.8% |
| Divorced | 10.4% | 12.8% | 10.8% |
| Widowed | 4.0% | 6.2% | 5.6% |
| space5 | | | |
| Household Size | 3.08 | 2.77 | 2.60 |
| Households | 13,847 | 830 | 124,010,992 |
| Family Households | 9,528 | 604 | 80,755,759 |
| Married couple, w/children | 37.6% | 34.6% | 30.5% |
| Married couple, no children | 29.1% | 41.7% | 42.9% |
| Non Family Households | 4,319 | 226 | 43,255,233 |
| Single householder, w/children | 19.6% | 10.4% | 15.8% |
| Single householder, no children | 13.7% | 13.2% | 10.8% |