Languages of Catalonia
According to the government of Catalonia, Spanish, locally known as Castilian, is currently the most spoken language in Catalonia (45.9% daily users of Spanish vs. 35.6% daily users of Catalan vs. 11% daily users of both Spanish and Catalan) and especially in the Barcelona metropolitan area, as well as native language and usual language of many Catalan citizens. This language is widely prevalent in the press, cinema and in daily life.
Languages of Catalonia
According to Ethnologue, about 18,000 deaf Catalans use Catalan Sign Language (LSC, "Llengua de signes catalana"). Since, like other deaf sign languages, LSC has no generally used written form, there is no literacy data.