| | Montgomery, VT | Essex, VT | United States |
| Population | 1,019 | 21,851 | 329,725,481 |
| Female Population | 53.9% | 51.9% | 50.5% |
| Male Population | 46.1% | 48.1% | 49.5% |
| Median Age | 48 | 41.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,200 | 19,639 | 309,327,143 |
| Population - 2000 | 992 | 18,626 | 285,036,114 |
| Population - 1990 | 823 | 16,498 | 251,960,433 |
| Pop. 2000 to Now | 22.2% | 17.3% | 15.6% |
| Pop. 1990 to Now | 47.3% | 32.4% | 30.8% |
| space4 | | | |
| Population Density | 18.0 | 562.8 | 93.4 |
| Land Area | 56.6 | 38.8 | 3,531,905.4 |
| Water Area | 0.1 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Montgomery, VT | Essex, VT | United States |
| Age 0 to 4 | 4.1% | 4.8% | 5.9% |
| Age 5 to 9 | 7.3% | 7.2% | 6.1% |
| Age 10 to 14 | 4.2% | 6.9% | 6.6% |
| Age 15 to 17 | 2.4% | 3.3% | 3.9% |
| Age 18 to 20 | 1.2% | 2.7% | 4.0% |
| Age 21 to 24 | 5.7% | 4.7% | 5.2% |
| Age 25 to 34 | 5.6% | 11.8% | 13.8% |
| Age 35 to 44 | 16.8% | 14.4% | 12.9% |
| Age 45 to 54 | 15.5% | 14.3% | 12.6% |
| Age 55 to 59 | 0.3% | 6.1% | 6.7% |
| Age 60 to 64 | 6.2% | 5.8% | 6.3% |
| Age 65 to 74 | 27.5% | 10.2% | 9.6% |
| Age 75 to 84 | 2.3% | 6.7% | 4.5% |
| Age 85 and over | 1.1% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Montgomery, VT | Essex, VT | United States |
| White | 98.5% | 86.8% | 59.4% |
| Black | 0.0% | 3.8% | 12.2% |
| Asian | 0.1% | 3.5% | 5.6% |
| Native American | 0.3% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 0.0% | 4.4% | 3.2% |
| Hispanic | 1.1% | 1.3% | 18.4% |
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| Marriage & Family | | | |
| | Montgomery, VT | Essex, VT | United States |
| Married Population | 54.5% | 56.7% | 49.8% |
| Currently Married | 43.0% | 56.2% | 48.0% |
| Married but Separated | 11.5% | 0.6% | 1.8% |
| Single Population | 45.5% | 43.3% | 50.2% |
| Never Married | 22.9% | 28.3% | 33.8% |
| Divorced | 17.1% | 9.4% | 10.8% |
| Widowed | 5.5% | 5.5% | 5.6% |
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| Household Size | 1.95 | 2.34 | 2.60 |
| Households | 522 | 9,315 | 124,010,992 |
| Family Households | 258 | 6,155 | 80,755,759 |
| Married couple, w/children | 20.2% | 33.6% | 30.5% |
| Married couple, no children | 51.9% | 43.3% | 42.9% |
| Non Family Households | 264 | 3,160 | 43,255,233 |
| Single householder, w/children | 20.9% | 12.2% | 15.8% |
| Single householder, no children | 7.0% | 10.9% | 10.8% |