| | Dalmatia, PA | Leesburg, VA | United States |
| Population | 372 | 48,223 | 329,725,481 |
| Female Population | 56.7% | 48.6% | 50.5% |
| Male Population | 43.3% | 51.4% | 49.5% |
| Median Age | 51.8 | 35.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 619 | 43,040 | 309,327,143 |
| Population - 2000 | 386 | 28,311 | 285,036,114 |
| Population - 1990 | 402 | 16,202 | 251,960,433 |
| Pop. 2000 to Now | -1.0% | 92.5% | 15.6% |
| Pop. 1990 to Now | -5.0% | 236.3% | 30.8% |
| space4 | | | |
| Population Density | 545.5 | 3,889.3 | 93.4 |
| Land Area | 0.7 | 12.4 | 3,531,905.4 |
| Water Area | 0.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Dalmatia, PA | Leesburg, VA | United States |
| Age 0 to 4 | 3.2% | 7.4% | 5.9% |
| Age 5 to 9 | 1.6% | 8.2% | 6.1% |
| Age 10 to 14 | 2.4% | 7.6% | 6.6% |
| Age 15 to 17 | 8.3% | 4.6% | 3.9% |
| Age 18 to 20 | 0.8% | 3.2% | 4.0% |
| Age 21 to 24 | 8.3% | 5.0% | 5.2% |
| Age 25 to 34 | 10.5% | 13.6% | 13.8% |
| Age 35 to 44 | 3.5% | 16.6% | 12.9% |
| Age 45 to 54 | 18.5% | 14.5% | 12.6% |
| Age 55 to 59 | 8.6% | 6.9% | 6.7% |
| Age 60 to 64 | 2.7% | 4.5% | 6.3% |
| Age 65 to 74 | 16.4% | 4.8% | 9.6% |
| Age 75 to 84 | 9.4% | 2.1% | 4.5% |
| Age 85 and over | 5.6% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Dalmatia, PA | Leesburg, VA | United States |
| White | 99.7% | 59.7% | 59.4% |
| Black | 0.0% | 10.0% | 12.2% |
| Asian | 0.0% | 8.5% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 0.3% | 3.7% | 3.2% |
| Hispanic | 0.0% | 17.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Dalmatia, PA | Leesburg, VA | United States |
| Married Population | 53.0% | 55.3% | 49.8% |
| Currently Married | 51.3% | 53.6% | 48.0% |
| Married but Separated | 1.7% | 1.7% | 1.8% |
| Single Population | 47.0% | 44.7% | 50.2% |
| Never Married | 29.9% | 31.9% | 33.8% |
| Divorced | 7.8% | 9.7% | 10.8% |
| Widowed | 9.3% | 3.0% | 5.6% |
| space5 | | | |
| Household Size | 2.31 | 2.93 | 2.60 |
| Households | 161 | 16,392 | 124,010,992 |
| Family Households | 110 | 11,849 | 80,755,759 |
| Married couple, w/children | 20.9% | 47.5% | 30.5% |
| Married couple, no children | 52.7% | 31.7% | 42.9% |
| Non Family Households | 51 | 4,543 | 43,255,233 |
| Single householder, w/children | 13.6% | 14.2% | 15.8% |
| Single householder, no children | 12.7% | 6.6% | 10.8% |