| | Machias, NY | Newcastle, WY | United States |
| Population | 2,111 | 3,283 | 329,725,481 |
| Female Population | 50.2% | 46.9% | 50.5% |
| Male Population | 49.8% | 53.1% | 49.5% |
| Median Age | 48.8 | 37 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,372 | 3,529 | 309,327,143 |
| Population - 2000 | 2,482 | 3,065 | 285,036,114 |
| Population - 1990 | 2,338 | 3,003 | 251,960,433 |
| Pop. 2000 to Now | -8.7% | 8.1% | 15.6% |
| Pop. 1990 to Now | -3.0% | 10.4% | 30.8% |
| space4 | | | |
| Population Density | 52.2 | 1,281.9 | 93.4 |
| Land Area | 40.4 | 2.6 | 3,531,905.4 |
| Water Area | 0.6 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Machias, NY | Newcastle, WY | United States |
| Age 0 to 4 | 3.3% | 4.8% | 5.9% |
| Age 5 to 9 | 6.0% | 9.8% | 6.1% |
| Age 10 to 14 | 6.3% | 3.8% | 6.6% |
| Age 15 to 17 | 5.8% | 5.7% | 3.9% |
| Age 18 to 20 | 1.9% | 4.2% | 4.0% |
| Age 21 to 24 | 3.3% | 6.2% | 5.2% |
| Age 25 to 34 | 8.6% | 12.4% | 13.8% |
| Age 35 to 44 | 7.7% | 16.4% | 12.9% |
| Age 45 to 54 | 13.8% | 9.6% | 12.6% |
| Age 55 to 59 | 6.2% | 5.5% | 6.7% |
| Age 60 to 64 | 12.7% | 4.4% | 6.3% |
| Age 65 to 74 | 12.2% | 8.4% | 9.6% |
| Age 75 to 84 | 7.0% | 7.7% | 4.5% |
| Age 85 and over | 5.2% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Machias, NY | Newcastle, WY | United States |
| White | 89.3% | 90.4% | 59.4% |
| Black | 0.0% | 0.3% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 0.3% | 1.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 2.1% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 6.6% | 2.2% | 3.2% |
| Hispanic | 3.7% | 3.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Machias, NY | Newcastle, WY | United States |
| Married Population | 50.9% | 44.6% | 49.8% |
| Currently Married | 48.1% | 42.7% | 48.0% |
| Married but Separated | 2.8% | 1.9% | 1.8% |
| Single Population | 49.1% | 55.4% | 50.2% |
| Never Married | 24.9% | 31.7% | 33.8% |
| Divorced | 16.6% | 12.3% | 10.8% |
| Widowed | 7.6% | 11.3% | 5.6% |
| space5 | | | |
| Household Size | 2.33 | 2.66 | 2.60 |
| Households | 860 | 1,127 | 124,010,992 |
| Family Households | 581 | 761 | 80,755,759 |
| Married couple, w/children | 14.1% | 25.8% | 30.5% |
| Married couple, no children | 55.3% | 43.1% | 42.9% |
| Non Family Households | 279 | 366 | 43,255,233 |
| Single householder, w/children | 24.1% | 19.1% | 15.8% |
| Single householder, no children | 6.5% | 12.1% | 10.8% |