| | Lake Ridge, VA | Dale City, VA | United States |
| Population | 44,697 | 73,716 | 329,725,481 |
| Female Population | 53.4% | 49.6% | 50.5% |
| Male Population | 46.7% | 50.4% | 49.5% |
| Median Age | 36.6 | 35.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 39,421 | 63,625 | 309,327,143 |
| Population - 2000 | 30,404 | 55,971 | 285,036,114 |
| Population - 1990 | 23,862 | 47,170 | 251,960,433 |
| Pop. 2000 to Now | 54.4% | 38.0% | 15.6% |
| Pop. 1990 to Now | 96.8% | 63.7% | 30.8% |
| space4 | | | |
| Population Density | 4,787.6 | 5,176.7 | 93.4 |
| Land Area | 9.3 | 14.2 | 3,531,905.4 |
| Water Area | 0.4 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lake Ridge, VA | Dale City, VA | United States |
| Age 0 to 4 | 7.0% | 7.2% | 5.9% |
| Age 5 to 9 | 7.0% | 6.5% | 6.1% |
| Age 10 to 14 | 7.8% | 8.8% | 6.6% |
| Age 15 to 17 | 3.9% | 4.4% | 3.9% |
| Age 18 to 20 | 4.2% | 4.1% | 4.0% |
| Age 21 to 24 | 4.5% | 4.3% | 5.2% |
| Age 25 to 34 | 13.0% | 13.5% | 13.8% |
| Age 35 to 44 | 14.9% | 15.8% | 12.9% |
| Age 45 to 54 | 14.0% | 13.3% | 12.6% |
| Age 55 to 59 | 6.7% | 6.9% | 6.7% |
| Age 60 to 64 | 5.4% | 5.6% | 6.3% |
| Age 65 to 74 | 7.3% | 6.8% | 9.6% |
| Age 75 to 84 | 3.5% | 2.4% | 4.5% |
| Age 85 and over | 0.8% | 0.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lake Ridge, VA | Dale City, VA | United States |
| White | 45.1% | 26.4% | 59.4% |
| Black | 22.5% | 23.6% | 12.2% |
| Asian | 8.7% | 9.9% | 5.6% |
| Native American | 0.4% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 0.7% | 0.4% | 0.4% |
| Two or More Races | 5.1% | 4.5% | 3.2% |
| Hispanic | 17.5% | 34.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lake Ridge, VA | Dale City, VA | United States |
| Married Population | 55.2% | 53.5% | 49.8% |
| Currently Married | 53.3% | 50.7% | 48.0% |
| Married but Separated | 1.9% | 2.7% | 1.8% |
| Single Population | 44.8% | 46.5% | 50.2% |
| Never Married | 30.0% | 32.9% | 33.8% |
| Divorced | 11.0% | 9.1% | 10.8% |
| Widowed | 3.7% | 4.5% | 5.6% |
| space5 | | | |
| Household Size | 2.89 | 3.40 | 2.60 |
| Households | 15,448 | 21,692 | 124,010,992 |
| Family Households | 11,032 | 16,965 | 80,755,759 |
| Married couple, w/children | 40.5% | 41.8% | 30.5% |
| Married couple, no children | 36.8% | 34.1% | 42.9% |
| Non Family Households | 4,416 | 4,727 | 43,255,233 |
| Single householder, w/children | 13.8% | 14.2% | 15.8% |
| Single householder, no children | 8.9% | 9.9% | 10.8% |