| | Douglas, MA | Foresthill, CA | United States |
| Population | 8,975 | 1,265 | 329,725,481 |
| Female Population | 52.0% | 49.9% | 50.5% |
| Male Population | 48.0% | 50.1% | 49.5% |
| Median Age | 42.7 | 51.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 8,475 | 1,895 | 309,327,143 |
| Population - 2000 | 7,045 | 1,791 | 285,036,114 |
| Population - 1990 | 5,438 | 1,409 | 251,960,433 |
| Pop. 2000 to Now | 29.4% | -11.0% | 15.6% |
| Pop. 1990 to Now | 67.7% | 13.1% | 30.8% |
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| Population Density | 246.6 | 113.1 | 93.4 |
| Land Area | 36.4 | 11.2 | 3,531,905.4 |
| Water Area | 1.5 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Douglas, MA | Foresthill, CA | United States |
| Age 0 to 4 | 3.1% | 1.3% | 5.9% |
| Age 5 to 9 | 5.5% | 6.5% | 6.1% |
| Age 10 to 14 | 6.6% | 10.8% | 6.6% |
| Age 15 to 17 | 8.7% | 6.6% | 3.9% |
| Age 18 to 20 | 1.9% | 0.0% | 4.0% |
| Age 21 to 24 | 6.7% | 0.0% | 5.2% |
| Age 25 to 34 | 9.6% | 2.8% | 13.8% |
| Age 35 to 44 | 11.0% | 9.2% | 12.9% |
| Age 45 to 54 | 18.4% | 19.9% | 12.6% |
| Age 55 to 59 | 10.3% | 0.9% | 6.7% |
| Age 60 to 64 | 7.2% | 15.9% | 6.3% |
| Age 65 to 74 | 6.9% | 15.6% | 9.6% |
| Age 75 to 84 | 2.9% | 7.3% | 4.5% |
| Age 85 and over | 1.3% | 3.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Douglas, MA | Foresthill, CA | United States |
| White | 92.4% | 75.2% | 59.4% |
| Black | 0.3% | 0.0% | 12.2% |
| Asian | 0.9% | 0.0% | 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% | 0.0% | 3.2% |
| Hispanic | 5.3% | 24.8% | 18.4% |
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| Marriage & Family | | | |
| | Douglas, MA | Foresthill, CA | United States |
| Married Population | 57.7% | 63.7% | 49.8% |
| Currently Married | 57.4% | 63.7% | 48.0% |
| Married but Separated | 0.3% | 0.0% | 1.8% |
| Single Population | 42.3% | 36.3% | 50.2% |
| Never Married | 32.8% | 16.9% | 33.8% |
| Divorced | 6.3% | 13.3% | 10.8% |
| Widowed | 3.2% | 6.1% | 5.6% |
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| Household Size | 2.86 | 2.31 | 2.60 |
| Households | 3,133 | 547 | 124,010,992 |
| Family Households | 2,386 | 441 | 80,755,759 |
| Married couple, w/children | 38.5% | 8.4% | 30.5% |
| Married couple, no children | 51.6% | 65.1% | 42.9% |
| Non Family Households | 747 | 106 | 43,255,233 |
| Single householder, w/children | 8.8% | 23.8% | 15.8% |
| Single householder, no children | 1.0% | 2.7% | 10.8% |