Carnation is a city in King County, Washington, United States. It was historically known as Tolt and lies at the confluence of the Snoqualmie and Tolt rivers. The city is located east of Redmond and south of Duvall on State Route 203. The population was 2,158 at the 2020 census. Prior to American settlement, the area was occupied by a large village of the Snoqualmie. It was the center of Snoqualmie society in the 19th century.