| | Hatfield, MA | Cooper City, FL | United States |
| Population | 3,315 | 33,867 | 329,725,481 |
| Female Population | 52.1% | 52.1% | 50.5% |
| Male Population | 47.9% | 47.9% | 49.5% |
| Median Age | 45 | 40.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,259 | 28,606 | 309,327,143 |
| Population - 2000 | 3,249 | 27,939 | 285,036,114 |
| Population - 1990 | 3,184 | 20,791 | 251,960,433 |
| Pop. 2000 to Now | -0.2% | 27.8% | 15.6% |
| Pop. 1990 to Now | 1.9% | 71.7% | 30.8% |
| space4 | | | |
| Population Density | 208.4 | 4,213.4 | 93.4 |
| Land Area | 15.9 | 8.0 | 3,531,905.4 |
| Water Area | 0.9 | 0.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hatfield, MA | Cooper City, FL | United States |
| Age 0 to 4 | 5.2% | 5.1% | 5.9% |
| Age 5 to 9 | 2.1% | 7.4% | 6.1% |
| Age 10 to 14 | 6.4% | 7.8% | 6.6% |
| Age 15 to 17 | 2.9% | 4.7% | 3.9% |
| Age 18 to 20 | 5.3% | 4.7% | 4.0% |
| Age 21 to 24 | 5.6% | 4.0% | 5.2% |
| Age 25 to 34 | 14.2% | 9.2% | 13.8% |
| Age 35 to 44 | 8.4% | 15.5% | 12.9% |
| Age 45 to 54 | 9.5% | 14.9% | 12.6% |
| Age 55 to 59 | 8.5% | 7.7% | 6.7% |
| Age 60 to 64 | 8.7% | 4.7% | 6.3% |
| Age 65 to 74 | 14.3% | 9.7% | 9.6% |
| Age 75 to 84 | 6.7% | 3.6% | 4.5% |
| Age 85 and over | 2.2% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hatfield, MA | Cooper City, FL | United States |
| White | 88.6% | 51.2% | 59.4% |
| Black | 0.0% | 6.0% | 12.2% |
| Asian | 1.5% | 6.3% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.6% | 2.3% | 0.4% |
| Two or More Races | 3.1% | 2.6% | 3.2% |
| Hispanic | 6.1% | 31.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hatfield, MA | Cooper City, FL | United States |
| Married Population | 48.7% | 58.5% | 49.8% |
| Currently Married | 48.3% | 57.2% | 48.0% |
| Married but Separated | 0.4% | 1.3% | 1.8% |
| Single Population | 51.3% | 41.5% | 50.2% |
| Never Married | 33.4% | 28.0% | 33.8% |
| Divorced | 9.6% | 9.9% | 10.8% |
| Widowed | 8.2% | 3.5% | 5.6% |
| space5 | | | |
| Household Size | 2.22 | 3.06 | 2.60 |
| Households | 1,490 | 11,072 | 124,010,992 |
| Family Households | 905 | 9,282 | 80,755,759 |
| Married couple, w/children | 25.4% | 36.1% | 30.5% |
| Married couple, no children | 47.2% | 42.3% | 42.9% |
| Non Family Households | 585 | 1,790 | 43,255,233 |
| Single householder, w/children | 16.8% | 14.8% | 15.8% |
| Single householder, no children | 10.6% | 6.8% | 10.8% |