Spain
As a percentage of the general population of all Spain, Spanish is natively spoken by 74%, Catalan by 17%, Galician by 7% and Basque by 2% of all Spaniards. Occitan is spoken by less than 5,000 people, only in the small region of "Val d'Aran".
Other Romance minority languages, though not official, have special recognition, such as the Astur-Leonese language ("asturianu", "bable" or "llionés") and Aragonese ("aragonés") in Aragon.
Standard Spanish
Given that a neutral Spanish for all Spanish-speakers is impossible, there are four established standardized "Spanishes" used in translations and, more recently, in film-dubbing by some companies: (1) Castilian or Peninsular Spanish for Spain; (2) River Plate Spanish for Uruguay, Paraguay and Argentina (using "voseo"); (3) Mexican Spanish for the United States, Canada, Mexico, Central America (even though this last region is largely "voseante"), and the rest of Spanish-speaking America); (4) the Spanish of international organisations like the United Nations, the Organisation of American States and their respective specialised bodies. Naturally UN Spanish differs from OAS Spanish, because Spain is not a full member of the latter organisation, and thus its influence is weak. But Spain was refused membership in the UN when it was founded in 1945, since Spain was a dictatorship. Although it remained a dictatorship, it was eventually admitted in 1956. However, by then UN Spanish had already been established by Spanish-American diplomats and translators.