| | Medfield, MA | Dummerston, VT | United States |
| Population | 12,775 | 2,185 | 329,725,481 |
| Female Population | 51.0% | 55.3% | 50.5% |
| Male Population | 49.0% | 44.7% | 49.5% |
| Median Age | 40.8 | 45.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 12,058 | 1,861 | 309,327,143 |
| Population - 2000 | 12,273 | 1,915 | 285,036,114 |
| Population - 1990 | 10,531 | 1,863 | 251,960,433 |
| Pop. 2000 to Now | 6.0% | -9.2% | 15.6% |
| Pop. 1990 to Now | 23.6% | -6.7% | 30.8% |
| space4 | | | |
| Population Density | 887.0 | 71.4 | 93.4 |
| Land Area | 14.4 | 30.6 | 3,531,905.4 |
| Water Area | 0.2 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Medfield, MA | Dummerston, VT | United States |
| Age 0 to 4 | 7.6% | 4.9% | 5.9% |
| Age 5 to 9 | 7.9% | 4.5% | 6.1% |
| Age 10 to 14 | 8.9% | 6.4% | 6.6% |
| Age 15 to 17 | 5.3% | 3.6% | 3.9% |
| Age 18 to 20 | 3.0% | 1.9% | 4.0% |
| Age 21 to 24 | 3.6% | 0.8% | 5.2% |
| Age 25 to 34 | 6.8% | 10.0% | 13.8% |
| Age 35 to 44 | 12.8% | 16.8% | 12.9% |
| Age 45 to 54 | 16.0% | 13.3% | 12.6% |
| Age 55 to 59 | 9.6% | 6.9% | 6.7% |
| Age 60 to 64 | 6.5% | 8.3% | 6.3% |
| Age 65 to 74 | 7.1% | 14.1% | 9.6% |
| Age 75 to 84 | 4.3% | 6.2% | 4.5% |
| Age 85 and over | 0.8% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Medfield, MA | Dummerston, VT | United States |
| White | 92.5% | 92.6% | 59.4% |
| Black | 0.2% | 0.0% | 12.2% |
| Asian | 3.0% | 0.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.1% | 2.7% | 3.2% |
| Hispanic | 3.1% | 4.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Medfield, MA | Dummerston, VT | United States |
| Married Population | 69.9% | 48.5% | 49.8% |
| Currently Married | 69.8% | 48.1% | 48.0% |
| Married but Separated | 0.2% | 0.4% | 1.8% |
| Single Population | 30.1% | 51.5% | 50.2% |
| Never Married | 22.3% | 29.8% | 33.8% |
| Divorced | 4.3% | 16.5% | 10.8% |
| Widowed | 3.5% | 5.3% | 5.6% |
| space5 | | | |
| Household Size | 2.91 | 2.46 | 2.60 |
| Households | 4,373 | 890 | 124,010,992 |
| Family Households | 3,591 | 602 | 80,755,759 |
| Married couple, w/children | 50.8% | 16.1% | 30.5% |
| Married couple, no children | 41.8% | 51.2% | 42.9% |
| Non Family Households | 782 | 288 | 43,255,233 |
| Single householder, w/children | 4.1% | 21.8% | 15.8% |
| Single householder, no children | 3.3% | 11.0% | 10.8% |