| | Grandview, WA | Sunnyside, WA | United States |
| Population | 10,894 | 16,343 | 329,725,481 |
| Female Population | 50.1% | 49.6% | 50.5% |
| Male Population | 50.0% | 50.4% | 49.5% |
| Median Age | 27.4 | 26.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 10,888 | 15,986 | 309,327,143 |
| Population - 2000 | 8,377 | 13,905 | 285,036,114 |
| Population - 1990 | 7,169 | 11,238 | 251,960,433 |
| Pop. 2000 to Now | 31.7% | 21.7% | 15.6% |
| Pop. 1990 to Now | 53.8% | 50.6% | 30.8% |
| space4 | | | |
| Population Density | 1,700.1 | 2,175.6 | 93.4 |
| Land Area | 6.4 | 7.5 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Grandview, WA | Sunnyside, WA | United States |
| Age 0 to 4 | 10.3% | 9.8% | 5.9% |
| Age 5 to 9 | 11.5% | 12.3% | 6.1% |
| Age 10 to 14 | 12.0% | 12.6% | 6.6% |
| Age 15 to 17 | 4.3% | 5.3% | 3.9% |
| Age 18 to 20 | 3.2% | 3.9% | 4.0% |
| Age 21 to 24 | 6.1% | 4.5% | 5.2% |
| Age 25 to 34 | 16.7% | 14.9% | 13.8% |
| Age 35 to 44 | 9.6% | 10.8% | 12.9% |
| Age 45 to 54 | 11.2% | 8.8% | 12.6% |
| Age 55 to 59 | 4.1% | 4.4% | 6.7% |
| Age 60 to 64 | 4.1% | 3.3% | 6.3% |
| Age 65 to 74 | 4.3% | 5.1% | 9.6% |
| Age 75 to 84 | 2.0% | 1.9% | 4.5% |
| Age 85 and over | 0.7% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Grandview, WA | Sunnyside, WA | United States |
| White | 11.6% | 13.5% | 59.4% |
| Black | 0.1% | 0.0% | 12.2% |
| Asian | 0.3% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.4% | 0.3% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.6% | 0.0% | 3.2% |
| Hispanic | 87.0% | 86.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Grandview, WA | Sunnyside, WA | United States |
| Married Population | 47.8% | 48.6% | 49.8% |
| Currently Married | 44.6% | 46.0% | 48.0% |
| Married but Separated | 3.1% | 2.7% | 1.8% |
| Single Population | 52.2% | 51.4% | 50.2% |
| Never Married | 42.3% | 36.6% | 33.8% |
| Divorced | 7.4% | 8.4% | 10.8% |
| Widowed | 2.5% | 6.3% | 5.6% |
| space5 | | | |
| Household Size | 3.43 | 3.81 | 2.60 |
| Households | 3,166 | 4,225 | 124,010,992 |
| Family Households | 2,585 | 3,325 | 80,755,759 |
| Married couple, w/children | 25.5% | 35.3% | 30.5% |
| Married couple, no children | 30.0% | 24.3% | 42.9% |
| Non Family Households | 581 | 900 | 43,255,233 |
| Single householder, w/children | 38.4% | 32.3% | 15.8% |
| Single householder, no children | 6.1% | 8.1% | 10.8% |