. "Burien is a city in King County, Washington, United States. As of the 2010 Census, Burien's population was 33,313. The 2015 population estimate is 50,467 due largely impart to annexation. The city was originally known as Sunnydale."@en . . "Burien is a city in King County, Washington, United States. As of the 2010 Census, Burien's population was 33,313. The 2015 population estimate is 50,467 due largely impart to annexation. The city was originally known as Sunnydale."@en . "Burien"@en . .