| | Norfolk, VA | Vandalia, OH | United States |
| Population | 238,556 | 15,155 | 329,725,481 |
| Female Population | 47.7% | 51.8% | 50.5% |
| Male Population | 52.3% | 48.2% | 49.5% |
| Median Age | 30.9 | 38 | 38.4 |
| space3 | | | |
| Population - 2010 | 243,019 | 15,261 | 309,327,143 |
| Population - 2000 | 234,403 | 14,603 | 285,036,114 |
| Population - 1990 | 261,229 | 13,882 | 251,960,433 |
| Pop. 2000 to Now | 3.6% | 2.6% | 15.6% |
| Pop. 1990 to Now | -7.1% | 8.0% | 30.8% |
| space4 | | | |
| Population Density | 4,477.7 | 1,227.4 | 93.4 |
| Land Area | 53.3 | 12.3 | 3,531,905.4 |
| Water Area | 43.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Norfolk, VA | Vandalia, OH | United States |
| Age 0 to 4 | 6.4% | 7.1% | 5.9% |
| Age 5 to 9 | 5.1% | 5.6% | 6.1% |
| Age 10 to 14 | 5.4% | 5.9% | 6.6% |
| Age 15 to 17 | 2.7% | 4.1% | 3.9% |
| Age 18 to 20 | 7.0% | 2.9% | 4.0% |
| Age 21 to 24 | 10.6% | 6.0% | 5.2% |
| Age 25 to 34 | 19.3% | 13.6% | 13.8% |
| Age 35 to 44 | 11.8% | 11.1% | 12.9% |
| Age 45 to 54 | 9.6% | 14.3% | 12.6% |
| Age 55 to 59 | 5.4% | 8.5% | 6.7% |
| Age 60 to 64 | 5.4% | 5.2% | 6.3% |
| Age 65 to 74 | 7.0% | 9.3% | 9.6% |
| Age 75 to 84 | 2.9% | 5.3% | 4.5% |
| Age 85 and over | 1.3% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Norfolk, VA | Vandalia, OH | United States |
| White | 42.9% | 86.6% | 59.4% |
| Black | 40.1% | 6.1% | 12.2% |
| Asian | 3.6% | 1.3% | 5.6% |
| Native American | 0.2% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.2% | 0.4% |
| Two or More Races | 4.3% | 4.3% | 3.2% |
| Hispanic | 8.6% | 1.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Norfolk, VA | Vandalia, OH | United States |
| Married Population | 38.8% | 46.5% | 49.8% |
| Currently Married | 36.1% | 45.7% | 48.0% |
| Married but Separated | 2.6% | 0.7% | 1.8% |
| Single Population | 61.2% | 53.5% | 50.2% |
| Never Married | 45.5% | 30.9% | 33.8% |
| Divorced | 11.2% | 16.3% | 10.8% |
| Widowed | 4.5% | 6.3% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.34 | 2.60 |
| Households | 92,877 | 6,407 | 124,010,992 |
| Family Households | 52,096 | 3,807 | 80,755,759 |
| Married couple, w/children | 25.3% | 27.3% | 30.5% |
| Married couple, no children | 35.7% | 43.8% | 42.9% |
| Non Family Households | 40,781 | 2,600 | 43,255,233 |
| Single householder, w/children | 25.1% | 18.1% | 15.8% |
| Single householder, no children | 13.9% | 10.8% | 10.8% |