WA · CountyYakima County, Washington14 cities in the directoryCitiesCityPopulationRegionGrandview11,599—Granger3,789—Harrah576—Mabton1,960—Moxee4,791—Naches1,090—Selah8,653—Sunnyside16,317—Tieton1,610—Toppenish8,658—Union Gap6,582—Wapato4,492—Yakima97,390—Zillah3,123—