| | Acton, ME | Pittsfield, NH | United States |
| Population | 2,641 | 4,129 | 329,725,481 |
| Female Population | 43.3% | 52.0% | 50.5% |
| Male Population | 56.7% | 48.0% | 49.5% |
| Median Age | 53.1 | 48.7 | 38.4 |
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| Population - 2010 | 2,451 | 4,110 | 309,327,143 |
| Population - 2000 | 2,145 | 3,931 | 285,036,114 |
| Population - 1990 | 1,727 | 3,701 | 251,960,433 |
| Pop. 2000 to Now | 22.9% | 5.4% | 15.6% |
| Pop. 1990 to Now | 52.6% | 11.9% | 30.8% |
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| Population Density | 70.0 | 173.4 | 93.4 |
| Land Area | 37.7 | 23.8 | 3,531,905.4 |
| Water Area | 3.4 | 0.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Acton, ME | Pittsfield, NH | United States |
| Age 0 to 4 | 2.7% | 3.4% | 5.9% |
| Age 5 to 9 | 4.3% | 2.7% | 6.1% |
| Age 10 to 14 | 4.2% | 9.4% | 6.6% |
| Age 15 to 17 | 2.3% | 3.6% | 3.9% |
| Age 18 to 20 | 2.3% | 0.7% | 4.0% |
| Age 21 to 24 | 2.9% | 3.1% | 5.2% |
| Age 25 to 34 | 9.0% | 10.1% | 13.8% |
| Age 35 to 44 | 10.2% | 12.7% | 12.9% |
| Age 45 to 54 | 16.5% | 12.0% | 12.6% |
| Age 55 to 59 | 8.4% | 9.4% | 6.7% |
| Age 60 to 64 | 14.2% | 10.3% | 6.3% |
| Age 65 to 74 | 14.9% | 15.9% | 9.6% |
| Age 75 to 84 | 6.6% | 4.5% | 4.5% |
| Age 85 and over | 1.6% | 2.1% | 1.9% |
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| Race | | | |
| | Acton, ME | Pittsfield, NH | United States |
| White | 94.9% | 97.6% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.3% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.0% | 0.4% |
| Two or More Races | 4.4% | 0.5% | 3.2% |
| Hispanic | 0.5% | 1.7% | 18.4% |
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| Marriage & Family | | | |
| | Acton, ME | Pittsfield, NH | United States |
| Married Population | 62.0% | 54.3% | 49.8% |
| Currently Married | 61.5% | 53.6% | 48.0% |
| Married but Separated | 0.4% | 0.7% | 1.8% |
| Single Population | 38.0% | 45.7% | 50.2% |
| Never Married | 20.8% | 22.3% | 33.8% |
| Divorced | 13.5% | 17.4% | 10.8% |
| Widowed | 3.8% | 5.9% | 5.6% |
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| Household Size | 2.30 | 2.26 | 2.60 |
| Households | 1,150 | 1,823 | 124,010,992 |
| Family Households | 802 | 1,105 | 80,755,759 |
| Married couple, w/children | 17.0% | 21.6% | 30.5% |
| Married couple, no children | 70.0% | 56.0% | 42.9% |
| Non Family Households | 348 | 718 | 43,255,233 |
| Single householder, w/children | 10.1% | 12.7% | 15.8% |
| Single householder, no children | 3.0% | 9.7% | 10.8% |