| | McNeal, AZ | St. David, AZ | United States |
| Population | 181 | 1,411 | 329,725,481 |
| Female Population | 51.9% | 55.5% | 50.5% |
| Male Population | 48.1% | 44.5% | 49.5% |
| Median Age | 34.5 | 34.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 156 | 1,808 | 309,327,143 |
| Population - 2000 | 182 | 1,744 | 285,036,114 |
| Population - 1990 | 192 | 1,468 | 251,960,433 |
| Pop. 2000 to Now | -7.7% | -3.8% | 15.6% |
| Pop. 1990 to Now | -12.5% | 14.3% | 30.8% |
| space4 | | | |
| Population Density | 48.3 | 264.9 | 93.4 |
| Land Area | 3.7 | 5.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | McNeal, AZ | St. David, AZ | United States |
| Age 0 to 4 | 4.4% | 10.1% | 5.9% |
| Age 5 to 9 | 3.9% | 15.0% | 6.1% |
| Age 10 to 14 | 2.2% | 4.5% | 6.6% |
| Age 15 to 17 | 3.3% | 3.0% | 3.9% |
| Age 18 to 20 | 19.3% | 3.2% | 4.0% |
| Age 21 to 24 | 13.8% | 2.5% | 5.2% |
| Age 25 to 34 | 3.9% | 12.4% | 13.8% |
| Age 35 to 44 | 1.7% | 16.8% | 12.9% |
| Age 45 to 54 | 5.0% | 9.2% | 12.6% |
| Age 55 to 59 | 2.8% | 5.9% | 6.7% |
| Age 60 to 64 | 8.3% | 2.9% | 6.3% |
| Age 65 to 74 | 12.7% | 11.7% | 9.6% |
| Age 75 to 84 | 15.5% | 1.3% | 4.5% |
| Age 85 and over | 3.3% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | McNeal, AZ | St. David, AZ | United States |
| White | 66.3% | 76.2% | 59.4% |
| Black | 0.6% | 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% | 10.5% | 0.4% |
| Two or More Races | 0.0% | 1.5% | 3.2% |
| Hispanic | 33.1% | 11.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | McNeal, AZ | St. David, AZ | United States |
| Married Population | 70.4% | 47.0% | 49.8% |
| Currently Married | 70.4% | 43.8% | 48.0% |
| Married but Separated | 0.0% | 3.2% | 1.8% |
| Single Population | 29.6% | 53.0% | 50.2% |
| Never Married | 8.6% | 30.5% | 33.8% |
| Divorced | 13.6% | 15.3% | 10.8% |
| Widowed | 7.4% | 7.2% | 5.6% |
| space5 | | | |
| Household Size | 1.87 | 2.45 | 2.60 |
| Households | 97 | 576 | 124,010,992 |
| Family Households | 63 | 330 | 80,755,759 |
| Married couple, w/children | 15.9% | 27.6% | 30.5% |
| Married couple, no children | 79.4% | 32.7% | 42.9% |
| Non Family Households | 34 | 246 | 43,255,233 |
| Single householder, w/children | 0.0% | 30.3% | 15.8% |
| Single householder, no children | 4.8% | 9.4% | 10.8% |