| | Hopewell Junction, NY | Brewster, NY | United States |
| Population | 881 | 2,505 | 329,725,481 |
| Female Population | 61.1% | 37.1% | 50.5% |
| Male Population | 38.9% | 62.9% | 49.5% |
| Median Age | 32.3 | 33 | 38.4 |
| space3 | | | |
| Population - 2010 | 468 | 2,410 | 309,327,143 |
| Population - 2000 | 2,610 | 2,162 | 285,036,114 |
| Population - 1990 | 1,786 | 1,566 | 251,960,433 |
| Pop. 2000 to Now | -83.1% | 8.0% | 15.6% |
| Pop. 1990 to Now | -75.3% | 49.0% | 30.8% |
| space4 | | | |
| Population Density | 1,862.6 | 5,112.2 | 93.4 |
| Land Area | 0.5 | 0.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hopewell Junction, NY | Brewster, NY | United States |
| Age 0 to 4 | 14.9% | 4.1% | 5.9% |
| Age 5 to 9 | 12.0% | 10.4% | 6.1% |
| Age 10 to 14 | 3.9% | 3.5% | 6.6% |
| Age 15 to 17 | 9.8% | 1.3% | 3.9% |
| Age 18 to 20 | 0.0% | 5.6% | 4.0% |
| Age 21 to 24 | 3.7% | 6.0% | 5.2% |
| Age 25 to 34 | 6.6% | 25.8% | 13.8% |
| Age 35 to 44 | 20.8% | 17.1% | 12.9% |
| Age 45 to 54 | 13.5% | 11.2% | 12.6% |
| Age 55 to 59 | 1.6% | 1.8% | 6.7% |
| Age 60 to 64 | 1.4% | 2.7% | 6.3% |
| Age 65 to 74 | 9.9% | 6.7% | 9.6% |
| Age 75 to 84 | 2.0% | 3.6% | 4.5% |
| Age 85 and over | 0.0% | 0.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hopewell Junction, NY | Brewster, NY | United States |
| White | 49.3% | 26.2% | 59.4% |
| Black | 0.0% | 0.8% | 12.2% |
| Asian | 9.1% | 0.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 3.2% | 0.4% |
| Two or More Races | 0.0% | 1.4% | 3.2% |
| Hispanic | 41.7% | 68.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hopewell Junction, NY | Brewster, NY | United States |
| Married Population | 58.7% | 46.0% | 49.8% |
| Currently Married | 58.7% | 39.6% | 48.0% |
| Married but Separated | 0.0% | 6.4% | 1.8% |
| Single Population | 41.3% | 54.0% | 50.2% |
| Never Married | 25.1% | 39.1% | 33.8% |
| Divorced | 9.0% | 11.9% | 10.8% |
| Widowed | 7.2% | 3.0% | 5.6% |
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| Household Size | 2.96 | 2.58 | 2.60 |
| Households | 298 | 954 | 124,010,992 |
| Family Households | 212 | 542 | 80,755,759 |
| Married couple, w/children | 58.0% | 47.2% | 30.5% |
| Married couple, no children | 22.6% | 19.9% | 42.9% |
| Non Family Households | 86 | 412 | 43,255,233 |
| Single householder, w/children | 19.3% | 19.6% | 15.8% |
| Single householder, no children | 0.0% | 13.3% | 10.8% |