| | Mattapoisett, MA | The Pinehills, MA | United States |
| Population | 6,478 | 4,724 | 329,725,481 |
| Female Population | 47.1% | 55.4% | 50.5% |
| Male Population | 52.9% | 44.6% | 49.5% |
| Median Age | 56.6 | 68.3 | 38.4 |
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| Population - 2010 | 6,055 | 910 | 309,327,143 |
| Population - 2000 | 6,268 | 558 | 285,036,114 |
| Population - 1990 | 5,850 | 484 | 251,960,433 |
| Pop. 2000 to Now | 2.5% | 150.0% | 15.6% |
| Pop. 1990 to Now | 9.9% | 188.2% | 30.8% |
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| Population Density | 373.2 | 4,290.6 | 93.4 |
| Land Area | 17.4 | 1.1 | 3,531,905.4 |
| Water Area | 6.8 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Mattapoisett, MA | The Pinehills, MA | United States |
| Age 0 to 4 | 3.1% | 0.8% | 5.9% |
| Age 5 to 9 | 3.8% | 1.8% | 6.1% |
| Age 10 to 14 | 6.5% | 0.5% | 6.6% |
| Age 15 to 17 | 2.5% | 0.0% | 3.9% |
| Age 18 to 20 | 3.4% | 0.0% | 4.0% |
| Age 21 to 24 | 4.8% | 1.2% | 5.2% |
| Age 25 to 34 | 6.8% | 6.2% | 13.8% |
| Age 35 to 44 | 8.8% | 1.9% | 12.9% |
| Age 45 to 54 | 8.8% | 7.4% | 12.6% |
| Age 55 to 59 | 12.6% | 5.1% | 6.7% |
| Age 60 to 64 | 11.4% | 12.8% | 6.3% |
| Age 65 to 74 | 13.5% | 34.4% | 9.6% |
| Age 75 to 84 | 8.0% | 22.5% | 4.5% |
| Age 85 and over | 5.9% | 5.5% | 1.9% |
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| Race | | | |
| | Mattapoisett, MA | The Pinehills, MA | United States |
| White | 92.2% | 99.5% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.4% | 0.0% | 5.6% |
| Native American | 0.7% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 5.4% | 0.5% | 3.2% |
| Hispanic | 0.9% | 0.0% | 18.4% |
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| Marriage & Family | | | |
| | Mattapoisett, MA | The Pinehills, MA | United States |
| Married Population | 63.7% | 66.7% | 49.8% |
| Currently Married | 63.7% | 66.4% | 48.0% |
| Married but Separated | 0.0% | 0.3% | 1.8% |
| Single Population | 36.3% | 33.3% | 50.2% |
| Never Married | 21.1% | 10.8% | 33.8% |
| Divorced | 8.6% | 10.4% | 10.8% |
| Widowed | 6.7% | 12.1% | 5.6% |
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| Household Size | 2.21 | 1.94 | 2.60 |
| Households | 2,926 | 2,441 | 124,010,992 |
| Family Households | 1,992 | 1,639 | 80,755,759 |
| Married couple, w/children | 25.3% | 3.8% | 30.5% |
| Married couple, no children | 64.1% | 88.2% | 42.9% |
| Non Family Households | 934 | 802 | 43,255,233 |
| Single householder, w/children | 3.5% | 0.0% | 15.8% |
| Single householder, no children | 7.2% | 7.9% | 10.8% |