| | Windsor, VT | Williamstown, MA | United States |
| Population | 3,561 | 7,678 | 329,725,481 |
| Female Population | 57.1% | 54.3% | 50.5% |
| Male Population | 42.9% | 45.7% | 49.5% |
| Median Age | 43 | 30.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,547 | 7,785 | 309,327,143 |
| Population - 2000 | 3,756 | 8,424 | 285,036,114 |
| Population - 1990 | 3,714 | 8,220 | 251,960,433 |
| Pop. 2000 to Now | -12.6% | -9.4% | 15.6% |
| Pop. 1990 to Now | -11.6% | -7.2% | 30.8% |
| space4 | | | |
| Population Density | 182.9 | 164.2 | 93.4 |
| Land Area | 19.5 | 46.8 | 3,531,905.4 |
| Water Area | 0.3 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Windsor, VT | Williamstown, MA | United States |
| Age 0 to 4 | 6.3% | 3.2% | 5.9% |
| Age 5 to 9 | 4.7% | 2.5% | 6.1% |
| Age 10 to 14 | 5.3% | 3.2% | 6.6% |
| Age 15 to 17 | 3.3% | 6.6% | 3.9% |
| Age 18 to 20 | 1.9% | 20.2% | 4.0% |
| Age 21 to 24 | 4.5% | 11.9% | 5.2% |
| Age 25 to 34 | 11.2% | 6.6% | 13.8% |
| Age 35 to 44 | 13.7% | 6.8% | 12.9% |
| Age 45 to 54 | 10.1% | 6.9% | 12.6% |
| Age 55 to 59 | 2.8% | 4.7% | 6.7% |
| Age 60 to 64 | 5.8% | 5.6% | 6.3% |
| Age 65 to 74 | 17.3% | 12.8% | 9.6% |
| Age 75 to 84 | 7.7% | 5.8% | 4.5% |
| Age 85 and over | 5.5% | 3.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Windsor, VT | Williamstown, MA | United States |
| White | 93.7% | 81.3% | 59.4% |
| Black | 0.0% | 3.4% | 12.2% |
| Asian | 0.0% | 6.2% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.7% | 0.4% | 0.4% |
| Two or More Races | 2.8% | 4.4% | 3.2% |
| Hispanic | 2.7% | 4.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Windsor, VT | Williamstown, MA | United States |
| Married Population | 42.7% | 34.0% | 49.8% |
| Currently Married | 41.3% | 32.9% | 48.0% |
| Married but Separated | 1.4% | 1.1% | 1.8% |
| Single Population | 57.3% | 66.0% | 50.2% |
| Never Married | 25.7% | 53.4% | 33.8% |
| Divorced | 17.8% | 8.4% | 10.8% |
| Widowed | 13.7% | 4.3% | 5.6% |
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| Household Size | 2.13 | 2.12 | 2.60 |
| Households | 1,621 | 2,360 | 124,010,992 |
| Family Households | 868 | 1,349 | 80,755,759 |
| Married couple, w/children | 21.0% | 26.1% | 30.5% |
| Married couple, no children | 46.3% | 52.3% | 42.9% |
| Non Family Households | 753 | 1,011 | 43,255,233 |
| Single householder, w/children | 21.1% | 13.0% | 15.8% |
| Single householder, no children | 11.6% | 8.5% | 10.8% |