| | Kingfield, ME | Greene, RI | United States |
| Population | 836 | 1,032 | 329,725,481 |
| Female Population | 41.2% | 47.8% | 50.5% |
| Male Population | 58.9% | 52.2% | 49.5% |
| Median Age | 49.7 | 34.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 995 | 925 | 309,327,143 |
| Population - 2000 | 1,103 | 882 | 285,036,114 |
| Population - 1990 | 1,114 | 752 | 251,960,433 |
| Pop. 2000 to Now | -11.9% | -14.2% | 15.6% |
| Pop. 1990 to Now | -12.8% | 0.7% | 30.8% |
| space4 | | | |
| Population Density | 19.4 | 169.9 | 93.4 |
| Land Area | 43.1 | 6.1 | 3,531,905.4 |
| Water Area | 0.2 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kingfield, ME | Greene, RI | United States |
| Age 0 to 4 | 1.7% | 3.1% | 5.9% |
| Age 5 to 9 | 2.6% | 8.3% | 6.1% |
| Age 10 to 14 | 11.5% | 2.6% | 6.6% |
| Age 15 to 17 | 3.9% | 13.9% | 3.9% |
| Age 18 to 20 | 3.2% | 3.7% | 4.0% |
| Age 21 to 24 | 1.7% | 3.3% | 5.2% |
| Age 25 to 34 | 6.7% | 17.4% | 13.8% |
| Age 35 to 44 | 7.8% | 16.9% | 12.9% |
| Age 45 to 54 | 17.7% | 13.4% | 12.6% |
| Age 55 to 59 | 8.3% | 4.7% | 6.7% |
| Age 60 to 64 | 10.6% | 2.9% | 6.3% |
| Age 65 to 74 | 15.7% | 7.8% | 9.6% |
| Age 75 to 84 | 5.9% | 2.1% | 4.5% |
| Age 85 and over | 2.8% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kingfield, ME | Greene, RI | United States |
| White | 98.2% | 95.8% | 59.4% |
| Black | 0.2% | 0.0% | 12.2% |
| Asian | 0.7% | 2.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.6% | 0.4% |
| Two or More Races | 0.8% | 0.9% | 3.2% |
| Hispanic | 0.0% | 0.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kingfield, ME | Greene, RI | United States |
| Married Population | 60.7% | 46.1% | 49.8% |
| Currently Married | 60.7% | 46.1% | 48.0% |
| Married but Separated | 0.0% | 0.0% | 1.8% |
| Single Population | 39.3% | 53.9% | 50.2% |
| Never Married | 25.0% | 39.9% | 33.8% |
| Divorced | 7.5% | 9.1% | 10.8% |
| Widowed | 6.8% | 4.8% | 5.6% |
| space5 | | | |
| Household Size | 2.17 | 3.12 | 2.60 |
| Households | 386 | 329 | 124,010,992 |
| Family Households | 225 | 255 | 80,755,759 |
| Married couple, w/children | 25.8% | 39.6% | 30.5% |
| Married couple, no children | 59.6% | 30.6% | 42.9% |
| Non Family Households | 161 | 74 | 43,255,233 |
| Single householder, w/children | 11.6% | 13.3% | 15.8% |
| Single householder, no children | 3.1% | 16.5% | 10.8% |