Languages of Catalonia
According to the official government of Catalonia, Catalan is the second most spoken language of the region, after Spanish (over 35% of Catalans use exclusively Catalan as their first language, while 11% of Catalans use equally both Catalan and Spanish). It is the most spoken language in many comarques of Catalonia, with the exception of the Barcelona metropolitan area (Barcelonès plus surrounding comarques) and Camp de Tarragona. Catalan is a compulsory subject in schools and enjoys equals rights with Spanish throughout Catalonia.
Linguistic features of Spanish as spoken by Catalan speakers
The Spanish language is widely spoken in most of the Catalan-speaking territories, where it is partly characterized by language contact with the Catalan language. These territories are: Catalonia, the Valencian Community (except some inland areas which are only Spanish-speaking), the Balearic Islands, Andorra, and the easternmost areas of Aragon. This linguistic contact is encouraged by the fact that almost all of the Catalan speakers in these regions are Catalan–Spanish bilingual to a greater or lesser extent.