Grandview, WA has a population of 11,098 and is the 3,632nd largest city in the United States. The population density is 1,732 per sq mi which is 1691% higher than the Washington average and 1811% higher than the national average. The median age in Grandview is 27 which is approximately 29% lower than the Washington average of 38. In Grandview, 55% of the population over 15 years of age are married, 35% speak English and 65% speak Spanish. 54% of Grandview residents were born in Washington, 18% were born out of state, 0% were born outside of the United States and 27% were foreign born.