Most of Cardiff was built recently: 1% of its homes predate 1940 and the median home dates from 1984. Below: 1 old photo or paper, maps from 1904 on, and the census since 1890.
Coal mining was the historical basis of the economy. The town, for years the smallest incorporated town in the State of Alabama, declined along with the decline of underground coal mining and the rise of strip mining. The epochal flood of May 2003 destroyed a number of buildings in that part of Cardiff close to Five Mile Creek. The town is now but a dent in the land; scarce of life with a scant 20–30 people and covered with kudzu. Cardiff is becoming a ghost town.
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 the Library of Congress (1), 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.