| | Townsend, MA | Mashpee, MA | United States |
| Population | 9,144 | 14,996 | 329,725,481 |
| Female Population | 50.0% | 51.4% | 50.5% |
| Male Population | 50.0% | 48.6% | 49.5% |
| Median Age | 41.2 | 51.9 | 38.4 |
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| Population - 2010 | 8,974 | 14,002 | 309,327,143 |
| Population - 2000 | 9,198 | 12,946 | 285,036,114 |
| Population - 1990 | 8,496 | 7,884 | 251,960,433 |
| Pop. 2000 to Now | 2.7% | 10.2% | 15.6% |
| Pop. 1990 to Now | 11.2% | 81.0% | 30.8% |
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| Population Density | 278.8 | 641.0 | 93.4 |
| Land Area | 32.8 | 23.4 | 3,531,905.4 |
| Water Area | 0.3 | 3.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Townsend, MA | Mashpee, MA | United States |
| Age 0 to 4 | 4.8% | 4.5% | 5.9% |
| Age 5 to 9 | 7.3% | 4.7% | 6.1% |
| Age 10 to 14 | 4.8% | 4.1% | 6.6% |
| Age 15 to 17 | 3.9% | 2.5% | 3.9% |
| Age 18 to 20 | 3.9% | 2.0% | 4.0% |
| Age 21 to 24 | 4.1% | 3.8% | 5.2% |
| Age 25 to 34 | 12.6% | 12.0% | 13.8% |
| Age 35 to 44 | 12.4% | 9.6% | 12.9% |
| Age 45 to 54 | 13.9% | 10.3% | 12.6% |
| Age 55 to 59 | 9.8% | 9.7% | 6.7% |
| Age 60 to 64 | 7.4% | 8.1% | 6.3% |
| Age 65 to 74 | 11.0% | 15.8% | 9.6% |
| Age 75 to 84 | 3.1% | 9.6% | 4.5% |
| Age 85 and over | 1.1% | 3.3% | 1.9% |
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| Race | | | |
| | Townsend, MA | Mashpee, MA | United States |
| White | 88.1% | 84.6% | 59.4% |
| Black | 1.7% | 2.9% | 12.2% |
| Asian | 3.7% | 2.5% | 5.6% |
| Native American | 0.0% | 3.7% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.7% | 0.4% |
| Two or More Races | 1.8% | 4.3% | 3.2% |
| Hispanic | 4.5% | 1.3% | 18.4% |
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| Marriage & Family | | | |
| | Townsend, MA | Mashpee, MA | United States |
| Married Population | 57.8% | 52.4% | 49.8% |
| Currently Married | 56.7% | 51.3% | 48.0% |
| Married but Separated | 1.1% | 1.1% | 1.8% |
| Single Population | 42.2% | 47.6% | 50.2% |
| Never Married | 26.6% | 27.0% | 33.8% |
| Divorced | 10.7% | 14.5% | 10.8% |
| Widowed | 4.9% | 6.1% | 5.6% |
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| Household Size | 2.60 | 2.26 | 2.60 |
| Households | 3,511 | 6,603 | 124,010,992 |
| Family Households | 2,549 | 3,977 | 80,755,759 |
| Married couple, w/children | 29.6% | 18.2% | 30.5% |
| Married couple, no children | 51.9% | 60.6% | 42.9% |
| Non Family Households | 962 | 2,626 | 43,255,233 |
| Single householder, w/children | 9.3% | 12.9% | 15.8% |
| Single householder, no children | 9.3% | 8.3% | 10.8% |