| | Queensbury, NY | Syosset, NY | United States |
| Population | 28,914 | 19,347 | 329,725,481 |
| Female Population | 51.0% | 49.1% | 50.5% |
| Male Population | 49.1% | 50.9% | 49.5% |
| Median Age | 48.1 | 43.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 27,866 | 18,905 | 309,327,143 |
| Population - 2000 | 25,441 | 18,544 | 285,036,114 |
| Population - 1990 | 22,630 | 18,967 | 251,960,433 |
| Pop. 2000 to Now | 7.2% | 5.8% | 15.6% |
| Pop. 1990 to Now | 20.5% | 3.4% | 30.8% |
| space4 | | | |
| Population Density | 460.2 | 3,888.8 | 93.4 |
| Land Area | 62.8 | 5.0 | 3,531,905.4 |
| Water Area | 2.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Queensbury, NY | Syosset, NY | United States |
| Age 0 to 4 | 3.9% | 3.2% | 5.9% |
| Age 5 to 9 | 5.2% | 6.8% | 6.1% |
| Age 10 to 14 | 4.6% | 10.4% | 6.6% |
| Age 15 to 17 | 4.1% | 7.7% | 3.9% |
| Age 18 to 20 | 2.8% | 1.6% | 4.0% |
| Age 21 to 24 | 4.2% | 3.9% | 5.2% |
| Age 25 to 34 | 10.0% | 7.4% | 13.8% |
| Age 35 to 44 | 11.1% | 11.6% | 12.9% |
| Age 45 to 54 | 14.3% | 18.6% | 12.6% |
| Age 55 to 59 | 6.7% | 6.5% | 6.7% |
| Age 60 to 64 | 8.8% | 6.1% | 6.3% |
| Age 65 to 74 | 14.9% | 10.6% | 9.6% |
| Age 75 to 84 | 5.6% | 3.6% | 4.5% |
| Age 85 and over | 3.9% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Queensbury, NY | Syosset, NY | United States |
| White | 93.4% | 63.9% | 59.4% |
| Black | 1.0% | 1.0% | 12.2% |
| Asian | 0.7% | 29.1% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.5% | 0.4% |
| Two or More Races | 1.9% | 1.4% | 3.2% |
| Hispanic | 2.7% | 4.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Queensbury, NY | Syosset, NY | United States |
| Married Population | 56.0% | 66.2% | 49.8% |
| Currently Married | 54.3% | 65.6% | 48.0% |
| Married but Separated | 1.7% | 0.6% | 1.8% |
| Single Population | 44.0% | 33.8% | 50.2% |
| Never Married | 24.3% | 27.1% | 33.8% |
| Divorced | 11.7% | 3.2% | 10.8% |
| Widowed | 8.0% | 3.6% | 5.6% |
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| Household Size | 2.27 | 3.09 | 2.60 |
| Households | 12,522 | 6,204 | 124,010,992 |
| Family Households | 8,025 | 5,235 | 80,755,759 |
| Married couple, w/children | 27.4% | 52.7% | 30.5% |
| Married couple, no children | 53.4% | 39.5% | 42.9% |
| Non Family Households | 4,497 | 969 | 43,255,233 |
| Single householder, w/children | 9.3% | 2.8% | 15.8% |
| Single householder, no children | 9.9% | 5.0% | 10.8% |