Grandview is a city in Yakima County, Washington, United States. It is about 38 miles west of Kennewick and 38 miles southeast of Yakima…Grandview is a city in Yakima County, Washington, United States. It is about 38 miles west of Kennewick and 38 miles southeast of Yakima. The population was 10,907 at the 2020 census. Grandview's economy is agriculture based; with apples, cherries, concord and wine grapes, hops, asparagus, corn, wheat, dairy and other fruit and vegetable production supported by processing plants and cold storage facilities.