Carbonate was founded as a silver camp in 1879. On February 10, 1883, Colorado created Garfield County and designated Carbonate as the original county seat. The Town of Carbonate incorporated on April 13, 1883, and the Carbonate, Colorado, post office opened the same day. Carbonate's location high in the Flat Tops mountains made access difficult. After a few months, the Garfield County seat was moved to Glenwood Hot Springs. As the silver played out, miners departed. The Carbonate post office closed on November 15, 1886. By 1890, no residents remained.
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 Wikipedia, U.S. Geological Survey historical maps, 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.