| | Jackson, NH | Plainfield, NH | United States |
| Population | 998 | 2,694 | 329,725,481 |
| Female Population | 55.8% | 51.1% | 50.5% |
| Male Population | 44.2% | 48.9% | 49.5% |
| Median Age | 56.5 | 41.2 | 38.4 |
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| Population - 2010 | 834 | 2,365 | 309,327,143 |
| Population - 2000 | 835 | 2,241 | 285,036,114 |
| Population - 1990 | 678 | 2,056 | 251,960,433 |
| Pop. 2000 to Now | 3.7% | 7.9% | 15.6% |
| Pop. 1990 to Now | 27.7% | 17.7% | 30.8% |
| space4 | | | |
| Population Density | 14.9 | 51.6 | 93.4 |
| Land Area | 66.9 | 52.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.7 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Jackson, NH | Plainfield, NH | United States |
| Age 0 to 4 | 7.0% | 7.6% | 5.9% |
| Age 5 to 9 | 2.6% | 2.5% | 6.1% |
| Age 10 to 14 | 3.2% | 6.6% | 6.6% |
| Age 15 to 17 | 2.2% | 5.1% | 3.9% |
| Age 18 to 20 | 0.0% | 5.6% | 4.0% |
| Age 21 to 24 | 0.0% | 3.1% | 5.2% |
| Age 25 to 34 | 7.0% | 14.4% | 13.8% |
| Age 35 to 44 | 8.1% | 7.7% | 12.9% |
| Age 45 to 54 | 15.5% | 12.1% | 12.6% |
| Age 55 to 59 | 5.6% | 5.2% | 6.7% |
| Age 60 to 64 | 19.7% | 10.1% | 6.3% |
| Age 65 to 74 | 18.1% | 14.2% | 9.6% |
| Age 75 to 84 | 8.3% | 4.5% | 4.5% |
| Age 85 and over | 2.5% | 1.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Jackson, NH | Plainfield, NH | United States |
| White | 98.3% | 92.9% | 59.4% |
| Black | 0.0% | 0.3% | 12.2% |
| Asian | 0.0% | 3.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 2.9% | 3.2% |
| Hispanic | 1.7% | 0.4% | 18.4% |
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| Marriage & Family | | | |
| | Jackson, NH | Plainfield, NH | United States |
| Married Population | 63.2% | 60.7% | 49.8% |
| Currently Married | 63.2% | 60.0% | 48.0% |
| Married but Separated | 0.0% | 0.7% | 1.8% |
| Single Population | 36.8% | 39.3% | 50.2% |
| Never Married | 11.6% | 29.8% | 33.8% |
| Divorced | 17.2% | 5.9% | 10.8% |
| Widowed | 7.9% | 3.6% | 5.6% |
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| Household Size | 2.02 | 2.79 | 2.60 |
| Households | 493 | 925 | 124,010,992 |
| Family Households | 287 | 762 | 80,755,759 |
| Married couple, w/children | 27.5% | 35.4% | 30.5% |
| Married couple, no children | 69.0% | 51.7% | 42.9% |
| Non Family Households | 206 | 163 | 43,255,233 |
| Single householder, w/children | 0.0% | 9.3% | 15.8% |
| Single householder, no children | 3.5% | 3.5% | 10.8% |