| | Wynantskill, NY | Jacksonville, AL | United States |
| Population | 3,562 | 13,076 | 329,725,481 |
| Female Population | 53.3% | 52.3% | 50.5% |
| Male Population | 46.7% | 47.7% | 49.5% |
| Median Age | 45.9 | 30.8 | 38.4 |
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| Population - 2010 | 3,538 | 13,209 | 309,327,143 |
| Population - 2000 | 3,018 | 8,404 | 285,036,114 |
| Population - 1990 | 3,392 | 10,283 | 251,960,433 |
| Pop. 2000 to Now | 1.1% | 54.4% | 15.6% |
| Pop. 1990 to Now | -10.0% | 26.2% | 30.8% |
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| Population Density | 1,456.3 | 1,193.9 | 93.4 |
| Land Area | 2.4 | 11.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Wynantskill, NY | Jacksonville, AL | United States |
| Age 0 to 4 | 3.4% | 5.1% | 5.9% |
| Age 5 to 9 | 4.0% | 4.0% | 6.1% |
| Age 10 to 14 | 12.3% | 3.8% | 6.6% |
| Age 15 to 17 | 4.5% | 1.8% | 3.9% |
| Age 18 to 20 | 2.1% | 15.4% | 4.0% |
| Age 21 to 24 | 1.7% | 11.0% | 5.2% |
| Age 25 to 34 | 7.3% | 14.4% | 13.8% |
| Age 35 to 44 | 13.7% | 10.5% | 12.9% |
| Age 45 to 54 | 19.5% | 6.9% | 12.6% |
| Age 55 to 59 | 4.3% | 5.8% | 6.7% |
| Age 60 to 64 | 9.0% | 8.5% | 6.3% |
| Age 65 to 74 | 8.1% | 6.8% | 9.6% |
| Age 75 to 84 | 6.3% | 5.1% | 4.5% |
| Age 85 and over | 3.6% | 1.1% | 1.9% |
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| Race | | | |
| | Wynantskill, NY | Jacksonville, AL | United States |
| White | 92.4% | 71.8% | 59.4% |
| Black | 0.0% | 19.3% | 12.2% |
| Asian | 0.9% | 0.5% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.1% | 0.4% | 0.4% |
| Two or More Races | 2.4% | 2.4% | 3.2% |
| Hispanic | 4.1% | 5.0% | 18.4% |
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| Marriage & Family | | | |
| | Wynantskill, NY | Jacksonville, AL | United States |
| Married Population | 47.1% | 31.1% | 49.8% |
| Currently Married | 46.2% | 29.3% | 48.0% |
| Married but Separated | 0.9% | 1.8% | 1.8% |
| Single Population | 52.9% | 68.9% | 50.2% |
| Never Married | 33.6% | 51.8% | 33.8% |
| Divorced | 13.5% | 12.1% | 10.8% |
| Widowed | 5.8% | 5.0% | 5.6% |
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| Household Size | 2.45 | 2.24 | 2.60 |
| Households | 1,455 | 5,124 | 124,010,992 |
| Family Households | 1,066 | 2,461 | 80,755,759 |
| Married couple, w/children | 26.7% | 25.6% | 30.5% |
| Married couple, no children | 35.7% | 36.1% | 42.9% |
| Non Family Households | 389 | 2,663 | 43,255,233 |
| Single householder, w/children | 26.0% | 17.7% | 15.8% |
| Single householder, no children | 11.5% | 20.6% | 10.8% |