section_path: Demographics/Languages
section_name: Languages
paragraph_text: Languages
  
  Spain is a multilingual state. Spanish —featured in the 1978 Spanish Constitution as castellano ('Castilian')—has effectively been the official language of the entire country since 1931. As allowed in the third article of the Constitution, the other 'Spanish languages' can also become official in their respective autonomous communities. The territoriality created by the form of co-officiality codified in the 1978 Constitution creates an asymmetry, in which Spanish speakers' rights apply to the entire territory whereas vis-à-vis the rest of co-official languages, their speakers' rights only apply in their territories.
  
  Besides Spanish, other territorialised languages include Aragonese, Aranese, Astur-Leonese, Basque, Ceutan Arabic (Darija), Catalan, Galician, Portuguese, Valencian and Tamazight, to which the Romani Caló and the sign languages may add up. The number of speakers varies widely and their legal recognition is uneven, with some of the most vulnerable languages lacking any sort of effective protection. Those enjoying recognition as official language in some autonomous communities include Catalan/Valencian (in Catalonia and the Balearic Islands officially named as Catalan and in the Valencian Community officially named as Valencian); Galician (in Galicia); Basque (in the Basque Country and part of Navarre); and Aranese in Catalonia.
  
  According to an official survey complementary to the 2021 census carried out by National Statistics Institute, Spanish is considered as first language by 81.53%, while Catalan/Valencian by 10.50%, Galician by 3.77% and Basque by 1.42% of the Spanish population. The most spoken foreign language was Arabic with 2.17% of the population considering it as their first language, followed by English with 1.58%, Romanian with 1.44%, French with 0.94%, Portuguese with 0.54%, Chinese with 0.48%, German with 0.44% and Italian with 0.41%. Such diversity of foreign languages is mainly due to international migration.