| | Kingstown, MD | Rock Hall, MD | United States |
| Population | 1,745 | 1,397 | 329,725,481 |
| Female Population | 49.0% | 52.7% | 50.5% |
| Male Population | 51.0% | 47.3% | 49.5% |
| Median Age | 50.5 | 55.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,811 | 1,308 | 309,327,143 |
| Population - 2000 | 1,644 | 1,396 | 285,036,114 |
| Population - 1990 | 1,660 | 1,584 | 251,960,433 |
| Pop. 2000 to Now | 15.9% | -10.1% | 15.6% |
| Pop. 1990 to Now | 14.8% | -20.8% | 30.8% |
| space4 | | | |
| Population Density | 770.1 | 1,044.1 | 93.4 |
| Land Area | 2.3 | 1.3 | 3,531,905.4 |
| Water Area | 0.3 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kingstown, MD | Rock Hall, MD | United States |
| Age 0 to 4 | 1.0% | 5.0% | 5.9% |
| Age 5 to 9 | 1.1% | 5.2% | 6.1% |
| Age 10 to 14 | 7.9% | 5.0% | 6.6% |
| Age 15 to 17 | 4.5% | 3.2% | 3.9% |
| Age 18 to 20 | 2.6% | 3.5% | 4.0% |
| Age 21 to 24 | 6.8% | 2.6% | 5.2% |
| Age 25 to 34 | 8.5% | 7.2% | 13.8% |
| Age 35 to 44 | 9.9% | 9.7% | 12.9% |
| Age 45 to 54 | 16.2% | 8.4% | 12.6% |
| Age 55 to 59 | 13.0% | 6.0% | 6.7% |
| Age 60 to 64 | 6.5% | 8.1% | 6.3% |
| Age 65 to 74 | 10.3% | 19.8% | 9.6% |
| Age 75 to 84 | 10.0% | 12.8% | 4.5% |
| Age 85 and over | 1.9% | 3.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kingstown, MD | Rock Hall, MD | United States |
| White | 96.3% | 86.8% | 59.4% |
| Black | 2.6% | 7.5% | 12.2% |
| Asian | 0.0% | 0.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 2.6% | 0.4% |
| Two or More Races | 0.6% | 1.7% | 3.2% |
| Hispanic | 0.5% | 1.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kingstown, MD | Rock Hall, MD | United States |
| Married Population | 51.6% | 49.7% | 49.8% |
| Currently Married | 50.9% | 46.8% | 48.0% |
| Married but Separated | 0.7% | 2.9% | 1.8% |
| Single Population | 48.4% | 50.3% | 50.2% |
| Never Married | 23.1% | 27.4% | 33.8% |
| Divorced | 20.9% | 14.1% | 10.8% |
| Widowed | 4.5% | 8.9% | 5.6% |
| space5 | | | |
| Household Size | 2.14 | 2.08 | 2.60 |
| Households | 815 | 650 | 124,010,992 |
| Family Households | 428 | 363 | 80,755,759 |
| Married couple, w/children | 26.4% | 12.1% | 30.5% |
| Married couple, no children | 57.9% | 61.2% | 42.9% |
| Non Family Households | 387 | 287 | 43,255,233 |
| Single householder, w/children | 8.2% | 18.7% | 15.8% |
| Single householder, no children | 7.5% | 8.0% | 10.8% |