| | Eloy, AZ | Hermiston, OR | United States |
| Population | 15,171 | 19,141 | 329,725,481 |
| Female Population | 26.4% | 51.1% | 50.5% |
| Male Population | 73.6% | 48.9% | 49.5% |
| Median Age | 36.3 | 30.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 16,810 | 16,753 | 309,327,143 |
| Population - 2000 | 10,375 | 13,154 | 285,036,114 |
| Population - 1990 | 7,211 | 10,040 | 251,960,433 |
| Pop. 2000 to Now | 66.5% | 35.3% | 15.6% |
| Pop. 1990 to Now | 139.6% | 77.2% | 30.8% |
| space4 | | | |
| Population Density | 133.7 | 2,334.3 | 93.4 |
| Land Area | 113.5 | 8.2 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Eloy, AZ | Hermiston, OR | United States |
| Age 0 to 4 | 2.9% | 8.0% | 5.9% |
| Age 5 to 9 | 3.3% | 8.9% | 6.1% |
| Age 10 to 14 | 3.1% | 9.8% | 6.6% |
| Age 15 to 17 | 1.9% | 4.5% | 3.9% |
| Age 18 to 20 | 3.5% | 6.1% | 4.0% |
| Age 21 to 24 | 6.7% | 5.0% | 5.2% |
| Age 25 to 34 | 25.5% | 13.3% | 13.8% |
| Age 35 to 44 | 18.7% | 14.1% | 12.9% |
| Age 45 to 54 | 11.7% | 10.7% | 12.6% |
| Age 55 to 59 | 4.8% | 5.3% | 6.7% |
| Age 60 to 64 | 5.2% | 3.1% | 6.3% |
| Age 65 to 74 | 9.0% | 7.0% | 9.6% |
| Age 75 to 84 | 3.2% | 3.1% | 4.5% |
| Age 85 and over | 0.7% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Eloy, AZ | Hermiston, OR | United States |
| White | 29.5% | 44.0% | 59.4% |
| Black | 10.6% | 0.8% | 12.2% |
| Asian | 1.3% | 0.4% | 5.6% |
| Native American | 2.5% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 1.8% | 0.1% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 2.1% | 3.2% | 3.2% |
| Hispanic | 52.1% | 51.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Eloy, AZ | Hermiston, OR | United States |
| Married Population | 31.1% | 50.0% | 49.8% |
| Currently Married | 28.1% | 48.4% | 48.0% |
| Married but Separated | 3.0% | 1.6% | 1.8% |
| Single Population | 68.9% | 50.0% | 50.2% |
| Never Married | 50.6% | 35.1% | 33.8% |
| Divorced | 15.3% | 10.6% | 10.8% |
| Widowed | 3.0% | 4.4% | 5.6% |
| space5 | | | |
| Household Size | 2.76 | 2.95 | 2.60 |
| Households | 2,788 | 6,423 | 124,010,992 |
| Family Households | 2,057 | 4,567 | 80,755,759 |
| Married couple, w/children | 19.0% | 37.9% | 30.5% |
| Married couple, no children | 44.3% | 29.8% | 42.9% |
| Non Family Households | 731 | 1,856 | 43,255,233 |
| Single householder, w/children | 27.8% | 22.3% | 15.8% |
| Single householder, no children | 8.9% | 10.0% | 10.8% |