| | Rosalia, WA | Mead, WA | United States |
| Population | 598 | 7,146 | 329,725,481 |
| Female Population | 52.5% | 48.7% | 50.5% |
| Male Population | 47.5% | 51.3% | 49.5% |
| Median Age | 45.9 | 43 | 38.4 |
| space3 | | | |
| Population - 2010 | 549 | 7,069 | 309,327,143 |
| Population - 2000 | 648 | 7,033 | 285,036,114 |
| Population - 1990 | 552 | 4,355 | 251,960,433 |
| Pop. 2000 to Now | -15.9% | 5.4% | 15.6% |
| Pop. 1990 to Now | -1.3% | 70.2% | 30.8% |
| space4 | | | |
| Population Density | 952.2 | 983.8 | 93.4 |
| Land Area | 0.6 | 7.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Rosalia, WA | Mead, WA | United States |
| Age 0 to 4 | 6.2% | 6.1% | 5.9% |
| Age 5 to 9 | 5.9% | 4.9% | 6.1% |
| Age 10 to 14 | 6.4% | 6.5% | 6.6% |
| Age 15 to 17 | 3.2% | 6.9% | 3.9% |
| Age 18 to 20 | 4.3% | 2.3% | 4.0% |
| Age 21 to 24 | 3.3% | 3.0% | 5.2% |
| Age 25 to 34 | 9.9% | 11.4% | 13.8% |
| Age 35 to 44 | 8.5% | 12.0% | 12.9% |
| Age 45 to 54 | 14.0% | 13.4% | 12.6% |
| Age 55 to 59 | 8.2% | 7.1% | 6.7% |
| Age 60 to 64 | 10.7% | 7.7% | 6.3% |
| Age 65 to 74 | 12.7% | 13.0% | 9.6% |
| Age 75 to 84 | 4.5% | 5.2% | 4.5% |
| Age 85 and over | 2.2% | 0.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Rosalia, WA | Mead, WA | United States |
| White | 80.4% | 88.9% | 59.4% |
| Black | 0.0% | 0.4% | 12.2% |
| Asian | 0.8% | 0.4% | 5.6% |
| Native American | 0.7% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.3% | 0.8% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 5.9% | 2.0% | 3.2% |
| Hispanic | 11.9% | 7.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Rosalia, WA | Mead, WA | United States |
| Married Population | 51.8% | 56.4% | 49.8% |
| Currently Married | 50.4% | 55.5% | 48.0% |
| Married but Separated | 1.4% | 0.9% | 1.8% |
| Single Population | 48.2% | 43.6% | 50.2% |
| Never Married | 25.6% | 24.2% | 33.8% |
| Divorced | 15.4% | 15.2% | 10.8% |
| Widowed | 7.2% | 4.2% | 5.6% |
| space5 | | | |
| Household Size | 2.35 | 2.77 | 2.60 |
| Households | 254 | 2,580 | 124,010,992 |
| Family Households | 135 | 2,034 | 80,755,759 |
| Married couple, w/children | 35.6% | 29.5% | 30.5% |
| Married couple, no children | 49.6% | 47.4% | 42.9% |
| Non Family Households | 119 | 546 | 43,255,233 |
| Single householder, w/children | 0.0% | 15.4% | 15.8% |
| Single householder, no children | 14.8% | 7.6% | 10.8% |