| | Gilmanton, NH | Mayer, AZ | United States |
| Population | 3,929 | 1,105 | 329,725,481 |
| Female Population | 49.2% | 47.8% | 50.5% |
| Male Population | 50.8% | 52.2% | 49.5% |
| Median Age | 44.5 | 54.5 | 38.4 |
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| Population - 2010 | 3,753 | 944 | 309,327,143 |
| Population - 2000 | 3,060 | 1,408 | 285,036,114 |
| Population - 1990 | 2,609 | 1,017 | 251,960,433 |
| Pop. 2000 to Now | 24.1% | 50.4% | 15.6% |
| Pop. 1990 to Now | 45.5% | 108.2% | 30.8% |
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| Population Density | 68.6 | 55.0 | 93.4 |
| Land Area | 57.2 | 20.1 | 3,531,905.4 |
| Water Area | 1.8 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Gilmanton, NH | Mayer, AZ | United States |
| Age 0 to 4 | 6.7% | 9.0% | 5.9% |
| Age 5 to 9 | 2.4% | 7.2% | 6.1% |
| Age 10 to 14 | 7.7% | 2.8% | 6.6% |
| Age 15 to 17 | 5.1% | 0.0% | 3.9% |
| Age 18 to 20 | 2.8% | 0.0% | 4.0% |
| Age 21 to 24 | 3.7% | 2.3% | 5.2% |
| Age 25 to 34 | 10.9% | 4.8% | 13.8% |
| Age 35 to 44 | 12.0% | 1.8% | 12.9% |
| Age 45 to 54 | 12.0% | 25.1% | 12.6% |
| Age 55 to 59 | 8.9% | 6.0% | 6.7% |
| Age 60 to 64 | 11.0% | 11.8% | 6.3% |
| Age 65 to 74 | 10.5% | 17.2% | 9.6% |
| Age 75 to 84 | 4.3% | 12.1% | 4.5% |
| Age 85 and over | 1.8% | 0.0% | 1.9% |
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| Race | | | |
| | Gilmanton, NH | Mayer, AZ | United States |
| White | 95.9% | 96.4% | 59.4% |
| Black | 2.0% | 0.0% | 12.2% |
| Asian | 0.1% | 0.0% | 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 | 0.3% | 0.0% | 3.2% |
| Hispanic | 1.7% | 3.6% | 18.4% |
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| Marriage & Family | | | |
| | Gilmanton, NH | Mayer, AZ | United States |
| Married Population | 62.2% | 54.6% | 49.8% |
| Currently Married | 62.2% | 54.6% | 48.0% |
| Married but Separated | 0.0% | 0.0% | 1.8% |
| Single Population | 37.8% | 45.4% | 50.2% |
| Never Married | 22.6% | 13.0% | 33.8% |
| Divorced | 10.2% | 20.1% | 10.8% |
| Widowed | 5.0% | 12.3% | 5.6% |
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| Household Size | 2.63 | 2.14 | 2.60 |
| Households | 1,493 | 516 | 124,010,992 |
| Family Households | 1,049 | 296 | 80,755,759 |
| Married couple, w/children | 31.7% | 8.8% | 30.5% |
| Married couple, no children | 51.9% | 67.6% | 42.9% |
| Non Family Households | 444 | 220 | 43,255,233 |
| Single householder, w/children | 10.8% | 23.6% | 15.8% |
| Single householder, no children | 5.6% | 0.0% | 10.8% |