Catalan is plummeting among young people in Barcelona. Only 17.8% of citizens between 15 and 34 years old primarily speak Catalan in their lives; one in four young people (25%) predominantly speak Catalan if we include bilinguals. The decline of Catalan over the last ten years is abrupt: in 2015, 37.7% of young people stated that Catalan was their everyday language, a figure that dropped to 28.4% in 2020. By 2025, it will fall another ten points. In other words, Catalan among young people in Barcelona has fallen twenty points in ten years. Three out of ten young people never speak it: there are more young people who never speak Catalan than young people who speak it regularly. Spanish is clearly the predominant language for conversations among young people, although 7% primarily use a third language, according to the 2025 Barcelona Youth Survey, conducted with 1,500 people aged 15 to 34 who have lived in the city for more than six months. Demographics largely explain these figures. Only 30% of young people have always lived in Barcelona, ​​while 43% have lived there for less than five years. 42% of young people are foreign nationals (six points higher than in 2020), and 55% have both parents of foreign origin. Catalan is never the predominant language among foreigners, who prefer Spanish and combinations with other languages. Looking at young people of Spanish nationality, Catalan is the predominant language for 30% of respondents.