| | Alstead, NH | Cody, WY | United States |
| Population | 1,626 | 10,055 | 329,725,481 |
| Female Population | 54.8% | 49.9% | 50.5% |
| Male Population | 45.2% | 50.1% | 49.5% |
| Median Age | 50.8 | 41 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,940 | 9,539 | 309,327,143 |
| Population - 2000 | 1,944 | 8,835 | 285,036,114 |
| Population - 1990 | 1,721 | 7,897 | 251,960,433 |
| Pop. 2000 to Now | 0.4% | 11.5% | 15.6% |
| Pop. 1990 to Now | 13.4% | 24.7% | 30.8% |
| space4 | | | |
| Population Density | 41.9 | 987.1 | 93.4 |
| Land Area | 38.8 | 10.2 | 3,531,905.4 |
| Water Area | 0.6 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Alstead, NH | Cody, WY | United States |
| Age 0 to 4 | 3.3% | 6.6% | 5.9% |
| Age 5 to 9 | 3.6% | 4.7% | 6.1% |
| Age 10 to 14 | 4.3% | 7.9% | 6.6% |
| Age 15 to 17 | 3.0% | 2.2% | 3.9% |
| Age 18 to 20 | 1.7% | 3.0% | 4.0% |
| Age 21 to 24 | 1.4% | 5.9% | 5.2% |
| Age 25 to 34 | 15.7% | 12.3% | 13.8% |
| Age 35 to 44 | 8.4% | 13.0% | 12.9% |
| Age 45 to 54 | 13.5% | 9.5% | 12.6% |
| Age 55 to 59 | 10.0% | 8.1% | 6.7% |
| Age 60 to 64 | 10.2% | 7.3% | 6.3% |
| Age 65 to 74 | 17.0% | 9.6% | 9.6% |
| Age 75 to 84 | 7.3% | 7.6% | 4.5% |
| Age 85 and over | 0.6% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Alstead, NH | Cody, WY | United States |
| White | 92.7% | 90.0% | 59.4% |
| Black | 0.0% | 0.6% | 12.2% |
| Asian | 0.7% | 0.0% | 5.6% |
| Native American | 0.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.6% | 0.4% |
| Two or More Races | 4.5% | 1.7% | 3.2% |
| Hispanic | 2.0% | 7.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Alstead, NH | Cody, WY | United States |
| Married Population | 54.3% | 53.4% | 49.8% |
| Currently Married | 52.6% | 52.4% | 48.0% |
| Married but Separated | 1.7% | 1.0% | 1.8% |
| Single Population | 45.7% | 46.6% | 50.2% |
| Never Married | 24.4% | 23.6% | 33.8% |
| Divorced | 17.9% | 17.0% | 10.8% |
| Widowed | 3.4% | 5.9% | 5.6% |
| space5 | | | |
| Household Size | 2.15 | 2.28 | 2.60 |
| Households | 757 | 4,401 | 124,010,992 |
| Family Households | 492 | 2,672 | 80,755,759 |
| Married couple, w/children | 13.8% | 38.2% | 30.5% |
| Married couple, no children | 64.6% | 37.9% | 42.9% |
| Non Family Households | 265 | 1,729 | 43,255,233 |
| Single householder, w/children | 13.4% | 10.0% | 15.8% |
| Single householder, no children | 8.1% | 13.9% | 10.8% |