sentences:  According to the 2002 census it has a population of 4,434 of which 99.28% or 4,402 are Hungarian.In 2004, half of the population of the village was engaged in charcoal burning as their principal business.Lupeni is the birthplace of the famous Hungarian writer Áron Tamási (1897–1966), known for such works as "Címeresek" and the "Ábel" trilogy.