Cromona is a small unincorporated community located in the mountains of Eastern Kentucky in Letcher County, Kentucky, United States. The Cromona post office has operated since 1916. Cromona is actually known as Haymond by the local residents. However, for reasons that are obscure, the post office was given a different name, Cromona. It was built as a coal town in 1916, and was named for the president of the Elk Horn Coal Corporation, Thomas S. Haymond. The population of Haymond was 502 as of the 2010 census.