| | Plainfield, VT | Sherwood, OR | United States |
| Population | 1,138 | 20,281 | 329,725,481 |
| Female Population | 50.2% | 49.9% | 50.5% |
| Male Population | 49.8% | 50.1% | 49.5% |
| Median Age | 45.9 | 36.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,249 | 18,437 | 309,327,143 |
| Population - 2000 | 1,286 | 11,791 | 285,036,114 |
| Population - 1990 | 1,302 | 3,093 | 251,960,433 |
| Pop. 2000 to Now | -1.8% | 67.5% | 15.6% |
| Pop. 1990 to Now | -3.0% | 538.4% | 30.8% |
| space4 | | | |
| Population Density | 54.3 | 4,703.4 | 93.4 |
| Land Area | 21.0 | 4.3 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Plainfield, VT | Sherwood, OR | United States |
| Age 0 to 4 | 4.3% | 5.3% | 5.9% |
| Age 5 to 9 | 3.4% | 8.4% | 6.1% |
| Age 10 to 14 | 5.9% | 9.3% | 6.6% |
| Age 15 to 17 | 2.4% | 6.4% | 3.9% |
| Age 18 to 20 | 8.8% | 4.3% | 4.0% |
| Age 21 to 24 | 2.8% | 3.5% | 5.2% |
| Age 25 to 34 | 4.0% | 10.2% | 13.8% |
| Age 35 to 44 | 16.9% | 15.5% | 12.9% |
| Age 45 to 54 | 13.8% | 16.7% | 12.6% |
| Age 55 to 59 | 6.5% | 4.2% | 6.7% |
| Age 60 to 64 | 9.8% | 6.2% | 6.3% |
| Age 65 to 74 | 16.8% | 5.6% | 9.6% |
| Age 75 to 84 | 3.0% | 2.8% | 4.5% |
| Age 85 and over | 1.7% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Plainfield, VT | Sherwood, OR | United States |
| White | 90.2% | 81.9% | 59.4% |
| Black | 0.8% | 0.1% | 12.2% |
| Asian | 1.9% | 3.5% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 5.4% | 7.6% | 3.2% |
| Hispanic | 1.6% | 6.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Plainfield, VT | Sherwood, OR | United States |
| Married Population | 42.4% | 59.6% | 49.8% |
| Currently Married | 41.8% | 58.6% | 48.0% |
| Married but Separated | 0.6% | 1.0% | 1.8% |
| Single Population | 57.6% | 40.4% | 50.2% |
| Never Married | 35.3% | 27.6% | 33.8% |
| Divorced | 16.9% | 9.9% | 10.8% |
| Widowed | 5.4% | 3.0% | 5.6% |
| space5 | | | |
| Household Size | 2.04 | 2.97 | 2.60 |
| Households | 534 | 6,814 | 124,010,992 |
| Family Households | 289 | 5,265 | 80,755,759 |
| Married couple, w/children | 16.3% | 45.2% | 30.5% |
| Married couple, no children | 52.2% | 39.2% | 42.9% |
| Non Family Households | 245 | 1,549 | 43,255,233 |
| Single householder, w/children | 14.5% | 11.5% | 15.8% |
| Single householder, no children | 17.0% | 4.1% | 10.8% |