| | Afton, NY | Windsor, NY | United States |
| Population | 2,783 | 5,845 | 329,725,481 |
| Female Population | 51.9% | 44.6% | 50.5% |
| Male Population | 48.2% | 55.4% | 49.5% |
| Median Age | 51.6 | 48.4 | 38.4 |
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| Population - 2010 | 2,845 | 6,258 | 309,327,143 |
| Population - 2000 | 2,977 | 6,421 | 285,036,114 |
| Population - 1990 | 2,972 | 6,440 | 251,960,433 |
| Pop. 2000 to Now | -9.6% | -9.3% | 15.6% |
| Pop. 1990 to Now | -9.4% | -9.6% | 30.8% |
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| Population Density | 60.5 | 63.7 | 93.4 |
| Land Area | 46.0 | 91.7 | 3,531,905.4 |
| Water Area | 0.7 | 1.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Afton, NY | Windsor, NY | United States |
| Age 0 to 4 | 7.5% | 8.2% | 5.9% |
| Age 5 to 9 | 4.5% | 3.7% | 6.1% |
| Age 10 to 14 | 3.5% | 4.9% | 6.6% |
| Age 15 to 17 | 2.0% | 5.8% | 3.9% |
| Age 18 to 20 | 1.8% | 3.4% | 4.0% |
| Age 21 to 24 | 1.8% | 0.9% | 5.2% |
| Age 25 to 34 | 12.7% | 10.3% | 13.8% |
| Age 35 to 44 | 8.4% | 9.9% | 12.9% |
| Age 45 to 54 | 18.3% | 13.0% | 12.6% |
| Age 55 to 59 | 8.7% | 8.8% | 6.7% |
| Age 60 to 64 | 7.8% | 10.3% | 6.3% |
| Age 65 to 74 | 13.6% | 11.8% | 9.6% |
| Age 75 to 84 | 6.9% | 5.4% | 4.5% |
| Age 85 and over | 2.4% | 3.7% | 1.9% |
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| Race | | | |
| | Afton, NY | Windsor, NY | United States |
| White | 94.4% | 96.8% | 59.4% |
| Black | 0.5% | 0.8% | 12.2% |
| Asian | 2.0% | 0.0% | 5.6% |
| Native American | 0.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.1% | 0.6% | 3.2% |
| Hispanic | 0.9% | 1.8% | 18.4% |
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| Marriage & Family | | | |
| | Afton, NY | Windsor, NY | United States |
| Married Population | 50.1% | 54.0% | 49.8% |
| Currently Married | 47.7% | 51.5% | 48.0% |
| Married but Separated | 2.4% | 2.4% | 1.8% |
| Single Population | 49.9% | 46.0% | 50.2% |
| Never Married | 24.3% | 32.3% | 33.8% |
| Divorced | 19.0% | 8.6% | 10.8% |
| Widowed | 6.6% | 5.2% | 5.6% |
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| Household Size | 2.44 | 2.27 | 2.60 |
| Households | 1,139 | 2,568 | 124,010,992 |
| Family Households | 762 | 1,561 | 80,755,759 |
| Married couple, w/children | 15.1% | 28.8% | 30.5% |
| Married couple, no children | 48.8% | 49.5% | 42.9% |
| Non Family Households | 377 | 1,007 | 43,255,233 |
| Single householder, w/children | 20.2% | 12.6% | 15.8% |
| Single householder, no children | 15.9% | 9.2% | 10.8% |