The Clark Fork post office opened in 1893, the earliest record of the town by name. Another post office, Clark's Fork (1886), opened inside today’s city and later closed.
2020 census: 513133 years
Founding year: the first Clark Fork post office (Blevins & Helbock, CC0).The full story ↓
What stands out about Clark Fork’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The Kutenai Indians have lived in the area around Lake Pend Oreille for centuries, well before the first Europeans explored the North American wilderness.
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 (4), the Library of Congress (1), 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.