| | Mountainaire, AZ | Mayer, AZ | United States |
| Population | 878 | 1,105 | 329,725,481 |
| Female Population | 51.0% | 47.8% | 50.5% |
| Male Population | 49.0% | 52.2% | 49.5% |
| Median Age | 52.4 | 54.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,357 | 944 | 309,327,143 |
| Population - 2000 | 1,014 | 1,408 | 285,036,114 |
| Population - 1990 | 819 | 1,017 | 251,960,433 |
| Pop. 2000 to Now | 0.3% | 50.4% | 15.6% |
| Pop. 1990 to Now | 24.2% | 108.2% | 30.8% |
| space4 | | | |
| Population Density | 86.1 | 55.0 | 93.4 |
| Land Area | 10.2 | 20.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Mountainaire, AZ | Mayer, AZ | United States |
| Age 0 to 4 | 0.0% | 9.0% | 5.9% |
| Age 5 to 9 | 0.0% | 7.2% | 6.1% |
| Age 10 to 14 | 6.6% | 2.8% | 6.6% |
| Age 15 to 17 | 0.0% | 0.0% | 3.9% |
| Age 18 to 20 | 0.0% | 0.0% | 4.0% |
| Age 21 to 24 | 1.5% | 2.3% | 5.2% |
| Age 25 to 34 | 17.8% | 4.8% | 13.8% |
| Age 35 to 44 | 4.7% | 1.8% | 12.9% |
| Age 45 to 54 | 25.5% | 25.1% | 12.6% |
| Age 55 to 59 | 5.2% | 6.0% | 6.7% |
| Age 60 to 64 | 19.4% | 11.8% | 6.3% |
| Age 65 to 74 | 3.6% | 17.2% | 9.6% |
| Age 75 to 84 | 13.4% | 12.1% | 4.5% |
| Age 85 and over | 2.3% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Mountainaire, AZ | Mayer, AZ | United States |
| White | 89.7% | 96.4% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 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 | 1.9% | 0.0% | 3.2% |
| Hispanic | 8.3% | 3.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Mountainaire, AZ | Mayer, AZ | United States |
| Married Population | 40.9% | 54.6% | 49.8% |
| Currently Married | 40.9% | 54.6% | 48.0% |
| Married but Separated | 0.0% | 0.0% | 1.8% |
| Single Population | 59.1% | 45.4% | 50.2% |
| Never Married | 34.6% | 13.0% | 33.8% |
| Divorced | 17.0% | 20.1% | 10.8% |
| Widowed | 7.6% | 12.3% | 5.6% |
| space5 | | | |
| Household Size | 1.84 | 2.14 | 2.60 |
| Households | 477 | 516 | 124,010,992 |
| Family Households | 200 | 296 | 80,755,759 |
| Married couple, w/children | 0.0% | 8.8% | 30.5% |
| Married couple, no children | 65.0% | 67.6% | 42.9% |
| Non Family Households | 277 | 220 | 43,255,233 |
| Single householder, w/children | 22.0% | 23.6% | 15.8% |
| Single householder, no children | 13.0% | 0.0% | 10.8% |