Marblemount’s post office opened in 1890, and 16% of its homes were built before 1940
Its Register listings are the Backus-Marblemount Ranger Station House No. 1009 and the Backus-Marblemount Ranger Station House No. 1010. Below: 1 old photo or paper, maps from 1953 on, and the census since 2000.
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.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikimedia Commons (6), the National Register of Historic Places (2), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.