| | Mont Vernon, NH | Windham, NY | United States |
| Population | 2,580 | 1,553 | 329,725,481 |
| Female Population | 48.3% | 51.5% | 50.5% |
| Male Population | 51.7% | 48.5% | 49.5% |
| Median Age | 44.6 | 49.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,431 | 1,692 | 309,327,143 |
| Population - 2000 | 2,034 | 1,660 | 285,036,114 |
| Population - 1990 | 1,812 | 1,682 | 251,960,433 |
| Pop. 2000 to Now | 33.6% | 1.4% | 15.6% |
| Pop. 1990 to Now | 50.0% | 0.1% | 30.8% |
| space4 | | | |
| Population Density | 155.3 | 34.4 | 93.4 |
| Land Area | 16.6 | 45.2 | 3,531,905.4 |
| Water Area | 0.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Mont Vernon, NH | Windham, NY | United States |
| Age 0 to 4 | 4.9% | 4.4% | 5.9% |
| Age 5 to 9 | 5.3% | 4.7% | 6.1% |
| Age 10 to 14 | 6.1% | 2.6% | 6.6% |
| Age 15 to 17 | 3.6% | 3.0% | 3.9% |
| Age 18 to 20 | 5.8% | 5.0% | 4.0% |
| Age 21 to 24 | 5.1% | 3.3% | 5.2% |
| Age 25 to 34 | 10.3% | 9.7% | 13.8% |
| Age 35 to 44 | 10.1% | 11.3% | 12.9% |
| Age 45 to 54 | 18.2% | 12.7% | 12.6% |
| Age 55 to 59 | 11.5% | 13.8% | 6.7% |
| Age 60 to 64 | 5.2% | 7.5% | 6.3% |
| Age 65 to 74 | 9.6% | 12.6% | 9.6% |
| Age 75 to 84 | 3.0% | 6.8% | 4.5% |
| Age 85 and over | 1.2% | 2.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Mont Vernon, NH | Windham, NY | United States |
| White | 96.6% | 90.2% | 59.4% |
| Black | 0.6% | 2.7% | 12.2% |
| Asian | 0.0% | 0.5% | 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 | 1.8% | 3.6% | 3.2% |
| Hispanic | 1.0% | 3.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Mont Vernon, NH | Windham, NY | United States |
| Married Population | 61.2% | 54.1% | 49.8% |
| Currently Married | 61.0% | 50.0% | 48.0% |
| Married but Separated | 0.3% | 4.1% | 1.8% |
| Single Population | 38.8% | 45.9% | 50.2% |
| Never Married | 28.2% | 24.4% | 33.8% |
| Divorced | 8.3% | 17.7% | 10.8% |
| Widowed | 2.2% | 3.8% | 5.6% |
| space5 | | | |
| Household Size | 2.90 | 2.66 | 2.60 |
| Households | 891 | 583 | 124,010,992 |
| Family Households | 759 | 408 | 80,755,759 |
| Married couple, w/children | 29.4% | 23.3% | 30.5% |
| Married couple, no children | 52.3% | 62.0% | 42.9% |
| Non Family Households | 132 | 175 | 43,255,233 |
| Single householder, w/children | 9.2% | 3.2% | 15.8% |
| Single householder, no children | 9.1% | 11.5% | 10.8% |