| | Winchester, CT | Milltown, NJ | United States |
| Population | 10,335 | 7,019 | 329,725,481 |
| Female Population | 48.8% | 55.2% | 50.5% |
| Male Population | 51.2% | 44.8% | 49.5% |
| Median Age | 50.7 | 41.3 | 38.4 |
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| Population - 2010 | 11,240 | 6,891 | 309,327,143 |
| Population - 2000 | 10,664 | 7,000 | 285,036,114 |
| Population - 1990 | 11,524 | 6,968 | 251,960,433 |
| Pop. 2000 to Now | -1.1% | -1.3% | 15.6% |
| Pop. 1990 to Now | -8.5% | -0.9% | 30.8% |
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| Population Density | 317.9 | 4,516.7 | 93.4 |
| Land Area | 32.5 | 1.6 | 3,531,905.4 |
| Water Area | 1.3 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Winchester, CT | Milltown, NJ | United States |
| Age 0 to 4 | 3.1% | 6.6% | 5.9% |
| Age 5 to 9 | 5.5% | 5.2% | 6.1% |
| Age 10 to 14 | 3.0% | 8.5% | 6.6% |
| Age 15 to 17 | 2.1% | 3.6% | 3.9% |
| Age 18 to 20 | 2.6% | 1.1% | 4.0% |
| Age 21 to 24 | 3.6% | 2.8% | 5.2% |
| Age 25 to 34 | 11.5% | 11.2% | 13.8% |
| Age 35 to 44 | 13.7% | 15.3% | 12.9% |
| Age 45 to 54 | 9.9% | 12.3% | 12.6% |
| Age 55 to 59 | 7.7% | 9.9% | 6.7% |
| Age 60 to 64 | 11.7% | 9.4% | 6.3% |
| Age 65 to 74 | 14.4% | 8.2% | 9.6% |
| Age 75 to 84 | 4.3% | 3.3% | 4.5% |
| Age 85 and over | 6.8% | 2.6% | 1.9% |
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| Race | | | |
| | Winchester, CT | Milltown, NJ | United States |
| White | 91.3% | 82.2% | 59.4% |
| Black | 1.1% | 2.8% | 12.2% |
| Asian | 0.0% | 4.2% | 5.6% |
| Native American | 0.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 2.0% | 3.6% | 3.2% |
| Hispanic | 5.2% | 7.0% | 18.4% |
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| Marriage & Family | | | |
| | Winchester, CT | Milltown, NJ | United States |
| Married Population | 48.0% | 56.3% | 49.8% |
| Currently Married | 46.4% | 54.8% | 48.0% |
| Married but Separated | 1.6% | 1.5% | 1.8% |
| Single Population | 52.0% | 43.7% | 50.2% |
| Never Married | 33.0% | 21.0% | 33.8% |
| Divorced | 14.7% | 14.3% | 10.8% |
| Widowed | 4.3% | 8.4% | 5.6% |
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| Household Size | 2.18 | 2.77 | 2.60 |
| Households | 4,714 | 2,529 | 124,010,992 |
| Family Households | 2,600 | 1,855 | 80,755,759 |
| Married couple, w/children | 20.7% | 34.7% | 30.5% |
| Married couple, no children | 60.4% | 36.1% | 42.9% |
| Non Family Households | 2,114 | 674 | 43,255,233 |
| Single householder, w/children | 11.0% | 12.2% | 15.8% |
| Single householder, no children | 7.8% | 17.0% | 10.8% |