| | San Manuel, AZ | Apache Junction, AZ | United States |
| Population | 3,489 | 38,311 | 329,725,481 |
| Female Population | 44.9% | 51.3% | 50.5% |
| Male Population | 55.1% | 48.7% | 49.5% |
| Median Age | 52.1 | 53.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,377 | 35,918 | 309,327,143 |
| Population - 2000 | 4,375 | 31,814 | 285,036,114 |
| Population - 1990 | 4,009 | 18,100 | 251,960,433 |
| Pop. 2000 to Now | 0.6% | 37.5% | 15.6% |
| Pop. 1990 to Now | 9.7% | 141.6% | 30.8% |
| space4 | | | |
| Population Density | 168.4 | 1,092.2 | 93.4 |
| Land Area | 20.7 | 35.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | San Manuel, AZ | Apache Junction, AZ | United States |
| Age 0 to 4 | 3.6% | 4.2% | 5.9% |
| Age 5 to 9 | 5.3% | 4.6% | 6.1% |
| Age 10 to 14 | 3.4% | 4.3% | 6.6% |
| Age 15 to 17 | 2.4% | 2.8% | 3.9% |
| Age 18 to 20 | 2.1% | 2.4% | 4.0% |
| Age 21 to 24 | 4.2% | 3.2% | 5.2% |
| Age 25 to 34 | 12.4% | 10.8% | 13.8% |
| Age 35 to 44 | 7.4% | 8.7% | 12.9% |
| Age 45 to 54 | 12.1% | 10.3% | 12.6% |
| Age 55 to 59 | 13.8% | 8.0% | 6.7% |
| Age 60 to 64 | 7.1% | 7.3% | 6.3% |
| Age 65 to 74 | 11.6% | 16.6% | 9.6% |
| Age 75 to 84 | 9.4% | 12.9% | 4.5% |
| Age 85 and over | 5.3% | 3.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | San Manuel, AZ | Apache Junction, AZ | United States |
| White | 39.4% | 74.9% | 59.4% |
| Black | 0.0% | 1.5% | 12.2% |
| Asian | 0.0% | 1.4% | 5.6% |
| Native American | 0.0% | 0.7% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 5.8% | 3.4% | 3.2% |
| Hispanic | 54.8% | 18.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | San Manuel, AZ | Apache Junction, AZ | United States |
| Married Population | 51.1% | 48.6% | 49.8% |
| Currently Married | 48.6% | 47.2% | 48.0% |
| Married but Separated | 2.4% | 1.3% | 1.8% |
| Single Population | 48.9% | 51.4% | 50.2% |
| Never Married | 24.0% | 23.8% | 33.8% |
| Divorced | 18.1% | 18.6% | 10.8% |
| Widowed | 6.9% | 9.1% | 5.6% |
| space5 | | | |
| Household Size | 2.18 | 2.20 | 2.60 |
| Households | 1,597 | 17,334 | 124,010,992 |
| Family Households | 1,003 | 9,947 | 80,755,759 |
| Married couple, w/children | 17.7% | 21.0% | 30.5% |
| Married couple, no children | 58.8% | 52.4% | 42.9% |
| Non Family Households | 594 | 7,387 | 43,255,233 |
| Single householder, w/children | 11.1% | 12.5% | 15.8% |
| Single householder, no children | 12.4% | 14.1% | 10.8% |