| | Roslyn, NY | Glen Burnie, MD | United States |
| Population | 2,971 | 69,739 | 329,725,481 |
| Female Population | 57.9% | 52.0% | 50.5% |
| Male Population | 42.1% | 48.0% | 49.5% |
| Median Age | 54.2 | 38.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,790 | 65,523 | 309,327,143 |
| Population - 2000 | 2,570 | 38,922 | 285,036,114 |
| Population - 1990 | 1,965 | 37,305 | 251,960,433 |
| Pop. 2000 to Now | 13.4% | 82.9% | 15.6% |
| Pop. 1990 to Now | 48.4% | 90.8% | 30.8% |
| space4 | | | |
| Population Density | 4,599.1 | 4,025.8 | 93.4 |
| Land Area | 0.6 | 17.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.7 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Roslyn, NY | Glen Burnie, MD | United States |
| Age 0 to 4 | 2.1% | 4.7% | 5.9% |
| Age 5 to 9 | 2.4% | 5.4% | 6.1% |
| Age 10 to 14 | 4.4% | 6.0% | 6.6% |
| Age 15 to 17 | 2.9% | 4.1% | 3.9% |
| Age 18 to 20 | 0.5% | 4.1% | 4.0% |
| Age 21 to 24 | 3.7% | 5.7% | 5.2% |
| Age 25 to 34 | 14.3% | 15.1% | 13.8% |
| Age 35 to 44 | 7.9% | 14.9% | 12.9% |
| Age 45 to 54 | 13.4% | 13.6% | 12.6% |
| Age 55 to 59 | 9.1% | 6.0% | 6.7% |
| Age 60 to 64 | 8.9% | 7.0% | 6.3% |
| Age 65 to 74 | 12.4% | 7.6% | 9.6% |
| Age 75 to 84 | 5.4% | 4.1% | 4.5% |
| Age 85 and over | 12.7% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Roslyn, NY | Glen Burnie, MD | United States |
| White | 67.9% | 57.0% | 59.4% |
| Black | 1.6% | 24.4% | 12.2% |
| Asian | 17.2% | 4.5% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 4.5% | 0.4% | 0.4% |
| Two or More Races | 0.2% | 5.0% | 3.2% |
| Hispanic | 8.5% | 8.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Roslyn, NY | Glen Burnie, MD | United States |
| Married Population | 46.5% | 46.7% | 49.8% |
| Currently Married | 43.0% | 44.8% | 48.0% |
| Married but Separated | 3.5% | 1.9% | 1.8% |
| Single Population | 53.5% | 53.3% | 50.2% |
| Never Married | 30.3% | 35.3% | 33.8% |
| Divorced | 11.4% | 12.5% | 10.8% |
| Widowed | 11.7% | 5.5% | 5.6% |
| space5 | | | |
| Household Size | 1.89 | 2.45 | 2.60 |
| Households | 1,452 | 28,259 | 124,010,992 |
| Family Households | 646 | 17,623 | 80,755,759 |
| Married couple, w/children | 26.9% | 27.0% | 30.5% |
| Married couple, no children | 57.7% | 41.2% | 42.9% |
| Non Family Households | 806 | 10,636 | 43,255,233 |
| Single householder, w/children | 8.8% | 18.5% | 15.8% |
| Single householder, no children | 6.5% | 13.3% | 10.8% |