Marblemount is a census-designated place in Skagit County, Washington, United States. The population was 286 at the 2020 census. It is included in the Mount Vernon–Anacortes, Washington Metropolitan Statistical Area.
History
thumb|upright|Historical hand-drawn map of Marblemount
Present-day Marblemount was the site of an indigenous village when naturalist George Gibbs explored the region in 1858. A community of Euro-Americans arose in the 1870s to supply goods for miners along the Skagit and Cascade River drainages. A wagon road was built between Marblemount and Sauk in 1892.
Geography
Marblemount is situated at the confluence of the Cascade River and Skagit River. It is surrounded by Lookout Mountain to the east, and Helen Buttes to the northwest.
According to the United States Census Bureau, the CDP has a total area of 2.5 square miles (6.4 km<sup>2</sup>), of which, 2.4 square miles (6.1 km<sup>2</sup>) of it is land and 0.1 square miles (0.3 km<sup>2</sup>) of it (4.44%) is water.
Demographics
thumb|left|Marblemount Community ClubAs of the census