| | Stoneham, ME | Imlay, SD | United States |
| Population | 257 | 20 | 329,725,481 |
| Female Population | 52.1% | 0.0% | 50.5% |
| Male Population | 47.9% | 100.0% | 49.5% |
| Median Age | 54.9 | 0 | 38.4 |
| space3 | | | |
| Population - 2010 | 238 | 7 | 309,327,143 |
| Population - 2000 | 255 | 20 | 285,036,114 |
| Population - 1990 | 224 | 14 | 251,960,433 |
| Pop. 2000 to Now | -2.0% | -65.0% | 15.6% |
| Pop. 1990 to Now | 11.6% | -50.0% | 30.8% |
| space4 | | | |
| Population Density | 7.6 | 0.2 | 93.4 |
| Land Area | 33.8 | 110.3 | 3,531,905.4 |
| Water Area | 0.9 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Stoneham, ME | Imlay, SD | United States |
| Age 0 to 4 | 1.2% | 0.0% | 5.9% |
| Age 5 to 9 | 4.7% | 0.0% | 6.1% |
| Age 10 to 14 | 2.7% | 0.0% | 6.6% |
| Age 15 to 17 | 4.3% | 0.0% | 3.9% |
| Age 18 to 20 | 1.2% | 0.0% | 4.0% |
| Age 21 to 24 | 4.3% | 0.0% | 5.2% |
| Age 25 to 34 | 8.2% | 0.0% | 13.8% |
| Age 35 to 44 | 7.4% | 0.0% | 12.9% |
| Age 45 to 54 | 16.7% | 15.0% | 12.6% |
| Age 55 to 59 | 6.2% | 85.0% | 6.7% |
| Age 60 to 64 | 8.6% | 0.0% | 6.3% |
| Age 65 to 74 | 23.0% | 0.0% | 9.6% |
| Age 75 to 84 | 10.5% | 0.0% | 4.5% |
| Age 85 and over | 1.2% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Stoneham, ME | Imlay, SD | United States |
| White | 97.7% | 100.0% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.8% | 0.0% | 0.4% |
| Two or More Races | 1.6% | 0.0% | 3.2% |
| Hispanic | 0.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Stoneham, ME | Imlay, SD | United States |
| Married Population | 57.9% | 0.0% | 49.8% |
| Currently Married | 49.8% | 0.0% | 48.0% |
| Married but Separated | 8.1% | 0.0% | 1.8% |
| Single Population | 42.1% | 100.0% | 50.2% |
| Never Married | 29.8% | 15.0% | 33.8% |
| Divorced | 8.9% | 85.0% | 10.8% |
| Widowed | 3.4% | 0.0% | 5.6% |
| space5 | | | |
| Household Size | 2.73 | | 2.6 |