| | Fiskdale, MA | Brimfield, MA | United States |
| Population | 3,166 | 3,703 | 329,725,481 |
| Female Population | 51.4% | 46.8% | 50.5% |
| Male Population | 48.6% | 53.2% | 49.5% |
| Median Age | 37.4 | 44.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,544 | 3,619 | 309,327,143 |
| Population - 2000 | 2,156 | 3,339 | 285,036,114 |
| Population - 1990 | 2,189 | 3,001 | 251,960,433 |
| Pop. 2000 to Now | 28.9% | 10.2% | 15.6% |
| Pop. 1990 to Now | 26.9% | 22.6% | 30.8% |
| space4 | | | |
| Population Density | 1,012.5 | 106.6 | 93.4 |
| Land Area | 3.1 | 34.7 | 3,531,905.4 |
| Water Area | 0.1 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Fiskdale, MA | Brimfield, MA | United States |
| Age 0 to 4 | 7.9% | 4.1% | 5.9% |
| Age 5 to 9 | 11.2% | 10.1% | 6.1% |
| Age 10 to 14 | 7.5% | 4.5% | 6.6% |
| Age 15 to 17 | 2.0% | 3.5% | 3.9% |
| Age 18 to 20 | 2.7% | 1.2% | 4.0% |
| Age 21 to 24 | 3.2% | 2.0% | 5.2% |
| Age 25 to 34 | 13.2% | 10.0% | 13.8% |
| Age 35 to 44 | 20.5% | 15.0% | 12.9% |
| Age 45 to 54 | 7.0% | 10.2% | 12.6% |
| Age 55 to 59 | 6.2% | 7.6% | 6.7% |
| Age 60 to 64 | 7.1% | 11.9% | 6.3% |
| Age 65 to 74 | 6.2% | 13.8% | 9.6% |
| Age 75 to 84 | 3.8% | 5.4% | 4.5% |
| Age 85 and over | 1.7% | 0.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Fiskdale, MA | Brimfield, MA | United States |
| White | 94.9% | 81.4% | 59.4% |
| Black | 0.9% | 4.1% | 12.2% |
| Asian | 2.1% | 0.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 3.2% | 0.4% |
| Two or More Races | 0.0% | 8.7% | 3.2% |
| Hispanic | 2.1% | 1.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Fiskdale, MA | Brimfield, MA | United States |
| Married Population | 48.2% | 60.6% | 49.8% |
| Currently Married | 48.2% | 60.6% | 48.0% |
| Married but Separated | 0.0% | 0.0% | 1.8% |
| Single Population | 51.8% | 39.4% | 50.2% |
| Never Married | 31.0% | 23.1% | 33.8% |
| Divorced | 16.3% | 10.0% | 10.8% |
| Widowed | 4.5% | 6.3% | 5.6% |
| space5 | | | |
| Household Size | 2.67 | 2.46 | 2.60 |
| Households | 1,181 | 1,503 | 124,010,992 |
| Family Households | 933 | 1,050 | 80,755,759 |
| Married couple, w/children | 21.9% | 32.2% | 30.5% |
| Married couple, no children | 28.5% | 55.8% | 42.9% |
| Non Family Households | 248 | 453 | 43,255,233 |
| Single householder, w/children | 36.3% | 9.1% | 15.8% |
| Single householder, no children | 13.3% | 2.9% | 10.8% |