The community passed through several names before 1858. The original name, Haydenville, honored David, Charles, and William Hayden, gold miners. Biddle's Camp and Biddleville commemorated William C. Biddle; Simpsonville honored Robert Simpson, a local merchant; and Johnsonville recognized John F. Johnson. The name became Bear Valley in 1858.
The Haydenville post office opened before January 21, 1851, and closed in 1852. The Bear Valley post office operated from 1858 to 1912, from 1914 to 1919, and from 1933 to 1955.
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 (5), 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.