| | Glasgow, DE | Staten Island, NY | United States |
| Population | 15,342 | 493,194 | 329,725,481 |
| Female Population | 52.4% | 51.2% | 50.5% |
| Male Population | 47.6% | 48.8% | 49.5% |
| Median Age | 41.4 | 40.4 | 38.4 |
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| Population - 2010 | 15,648 | 469,607 | 309,327,143 |
| Population - 2000 | 12,840 | 443,728 | 285,036,114 |
| Population - 1990 | 7,109 | 378,977 | 251,960,433 |
| Pop. 2000 to Now | 20.6% | 7.1% | 15.6% |
| Pop. 1990 to Now | 117.9% | 25.4% | 30.8% |
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| Population Density | 1,545.8 | 8,449.4 | 93.4 |
| Land Area | 9.9 | 58.4 | 3,531,905.4 |
| Water Area | 0.0 | 43.9 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Glasgow, DE | Staten Island, NY | United States |
| Age 0 to 4 | 6.3% | 5.6% | 5.9% |
| Age 5 to 9 | 4.8% | 5.9% | 6.1% |
| Age 10 to 14 | 5.3% | 6.5% | 6.6% |
| Age 15 to 17 | 4.0% | 4.0% | 3.9% |
| Age 18 to 20 | 3.1% | 3.3% | 4.0% |
| Age 21 to 24 | 3.2% | 4.9% | 5.2% |
| Age 25 to 34 | 14.1% | 13.3% | 13.8% |
| Age 35 to 44 | 13.3% | 12.6% | 12.9% |
| Age 45 to 54 | 17.6% | 13.7% | 12.6% |
| Age 55 to 59 | 10.8% | 6.9% | 6.7% |
| Age 60 to 64 | 6.1% | 7.0% | 6.3% |
| Age 65 to 74 | 7.4% | 9.8% | 9.6% |
| Age 75 to 84 | 3.3% | 4.5% | 4.5% |
| Age 85 and over | 0.5% | 1.9% | 1.9% |
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| Race | | | |
| | Glasgow, DE | Staten Island, NY | United States |
| White | 59.3% | 59.6% | 59.4% |
| Black | 24.2% | 9.1% | 12.2% |
| Asian | 8.2% | 10.4% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 3.7% | 2.1% | 3.2% |
| Hispanic | 4.6% | 18.4% | 18.4% |
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| Marriage & Family | | | |
| | Glasgow, DE | Staten Island, NY | United States |
| Married Population | 56.0% | 51.6% | 49.8% |
| Currently Married | 55.5% | 50.0% | 48.0% |
| Married but Separated | 0.5% | 1.6% | 1.8% |
| Single Population | 44.0% | 48.4% | 50.2% |
| Never Married | 33.2% | 34.1% | 33.8% |
| Divorced | 9.2% | 8.3% | 10.8% |
| Widowed | 1.5% | 6.0% | 5.6% |
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| Household Size | 2.84 | 2.87 | 2.60 |
| Households | 5,404 | 169,528 | 124,010,992 |
| Family Households | 3,738 | 123,441 | 80,755,759 |
| Married couple, w/children | 33.2% | 32.8% | 30.5% |
| Married couple, no children | 48.6% | 40.2% | 42.9% |
| Non Family Households | 1,666 | 46,087 | 43,255,233 |
| Single householder, w/children | 10.6% | 12.6% | 15.8% |
| Single householder, no children | 7.6% | 14.4% | 10.8% |