| | East Longmeadow, MA | West Brookfield, MA | United States |
| Population | 16,386 | 3,814 | 329,725,481 |
| Female Population | 54.1% | 53.2% | 50.5% |
| Male Population | 45.9% | 46.8% | 49.5% |
| Median Age | 43 | 50.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 15,793 | 3,655 | 309,327,143 |
| Population - 2000 | 14,100 | 3,804 | 285,036,114 |
| Population - 1990 | 13,367 | 3,532 | 251,960,433 |
| Pop. 2000 to Now | 14.1% | -2.4% | 15.6% |
| Pop. 1990 to Now | 20.4% | 5.1% | 30.8% |
| space4 | | | |
| Population Density | 1,259.9 | 186.2 | 93.4 |
| Land Area | 13.0 | 20.5 | 3,531,905.4 |
| Water Area | 0.1 | 0.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | East Longmeadow, MA | West Brookfield, MA | United States |
| Age 0 to 4 | 6.1% | 3.9% | 5.9% |
| Age 5 to 9 | 7.3% | 4.2% | 6.1% |
| Age 10 to 14 | 5.8% | 7.3% | 6.6% |
| Age 15 to 17 | 4.8% | 2.0% | 3.9% |
| Age 18 to 20 | 2.3% | 1.3% | 4.0% |
| Age 21 to 24 | 4.3% | 1.8% | 5.2% |
| Age 25 to 34 | 10.8% | 13.6% | 13.8% |
| Age 35 to 44 | 10.6% | 9.9% | 12.9% |
| Age 45 to 54 | 14.2% | 14.4% | 12.6% |
| Age 55 to 59 | 6.9% | 10.4% | 6.7% |
| Age 60 to 64 | 5.5% | 6.0% | 6.3% |
| Age 65 to 74 | 10.2% | 13.4% | 9.6% |
| Age 75 to 84 | 5.9% | 8.1% | 4.5% |
| Age 85 and over | 5.2% | 3.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | East Longmeadow, MA | West Brookfield, MA | United States |
| White | 86.3% | 97.0% | 59.4% |
| Black | 1.0% | 0.0% | 12.2% |
| Asian | 3.9% | 0.0% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 1.7% | 0.4% | 3.2% |
| Hispanic | 7.0% | 2.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | East Longmeadow, MA | West Brookfield, MA | United States |
| Married Population | 54.0% | 56.1% | 49.8% |
| Currently Married | 53.4% | 54.1% | 48.0% |
| Married but Separated | 0.6% | 2.0% | 1.8% |
| Single Population | 46.0% | 43.9% | 50.2% |
| Never Married | 26.5% | 26.1% | 33.8% |
| Divorced | 9.8% | 9.4% | 10.8% |
| Widowed | 9.6% | 8.4% | 5.6% |
| space5 | | | |
| Household Size | 2.66 | 2.37 | 2.60 |
| Households | 6,011 | 1,535 | 124,010,992 |
| Family Households | 4,251 | 1,041 | 80,755,759 |
| Married couple, w/children | 34.6% | 23.1% | 30.5% |
| Married couple, no children | 44.9% | 57.9% | 42.9% |
| Non Family Households | 1,760 | 494 | 43,255,233 |
| Single householder, w/children | 12.0% | 14.1% | 15.8% |
| Single householder, no children | 8.5% | 4.9% | 10.8% |