| | Palmyra, ME | Charlestown, NH | United States |
| Population | 2,226 | 4,855 | 329,725,481 |
| Female Population | 56.3% | 49.7% | 50.5% |
| Male Population | 43.7% | 50.3% | 49.5% |
| Median Age | 36.3 | 49.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,986 | 5,120 | 309,327,143 |
| Population - 2000 | 1,953 | 4,749 | 285,036,114 |
| Population - 1990 | 1,867 | 4,630 | 251,960,433 |
| Pop. 2000 to Now | 1.3% | 6.0% | 15.6% |
| Pop. 1990 to Now | 6.0% | 8.7% | 30.8% |
| space4 | | | |
| Population Density | 55.4 | 135.6 | 93.4 |
| Land Area | 40.2 | 35.8 | 3,531,905.4 |
| Water Area | 1.3 | 2.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Palmyra, ME | Charlestown, NH | United States |
| Age 0 to 4 | 5.7% | 4.8% | 5.9% |
| Age 5 to 9 | 8.0% | 6.0% | 6.1% |
| Age 10 to 14 | 11.0% | 3.7% | 6.6% |
| Age 15 to 17 | 7.1% | 3.8% | 3.9% |
| Age 18 to 20 | 4.3% | 2.0% | 4.0% |
| Age 21 to 24 | 2.7% | 1.4% | 5.2% |
| Age 25 to 34 | 9.7% | 10.5% | 13.8% |
| Age 35 to 44 | 9.2% | 14.9% | 12.9% |
| Age 45 to 54 | 14.0% | 10.3% | 12.6% |
| Age 55 to 59 | 6.6% | 9.0% | 6.7% |
| Age 60 to 64 | 6.6% | 10.4% | 6.3% |
| Age 65 to 74 | 9.1% | 14.9% | 9.6% |
| Age 75 to 84 | 4.9% | 6.9% | 4.5% |
| Age 85 and over | 1.3% | 1.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Palmyra, ME | Charlestown, NH | United States |
| White | 97.4% | 94.0% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 1.6% | 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 | 2.1% | 4.3% | 3.2% |
| Hispanic | 0.5% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Palmyra, ME | Charlestown, NH | United States |
| Married Population | 51.4% | 53.1% | 49.8% |
| Currently Married | 51.4% | 50.7% | 48.0% |
| Married but Separated | 0.0% | 2.4% | 1.8% |
| Single Population | 48.6% | 46.9% | 50.2% |
| Never Married | 30.1% | 27.3% | 33.8% |
| Divorced | 12.3% | 11.9% | 10.8% |
| Widowed | 6.2% | 7.7% | 5.6% |
| space5 | | | |
| Household Size | 2.72 | 2.56 | 2.60 |
| Households | 817 | 1,887 | 124,010,992 |
| Family Households | 516 | 1,244 | 80,755,759 |
| Married couple, w/children | 30.0% | 19.3% | 30.5% |
| Married couple, no children | 53.7% | 61.6% | 42.9% |
| Non Family Households | 301 | 643 | 43,255,233 |
| Single householder, w/children | 8.5% | 11.7% | 15.8% |
| Single householder, no children | 7.8% | 7.5% | 10.8% |