45,890,000 in Spain, all users. L1 users: 38,400,000 (European Commission 2012). L2 users: 7,490,000 (European Commission 2012). Total users in all countries: 527,976,150 (as L1: 436,667,750; as L2: 91,308,400).
1 (National). Statutory national language (1978, Constitution, Art 3(1)), recognized statutory language in all autonomous cities and communities under various local laws.
Andalusian (Andalú, Andalusí, Andaluz), Aragonese, Murcian, Navarrese, Castilian, Canary Islands Spanish (Isleño), American Spanish (Chicano), Silbo Gomero. Lexical similarity: 89% with Portuguese [por], 85% with Catalan [cat], 82% with Italian [ita], 76% with Sardinian [src], 75% with French [fra], 74% with Ladin [lld], 71% with Romanian [ron].
SVO; prepositions; genitives, relatives after noun heads; articles, numerals before noun heads; adjectives before or after noun heads depending on whether it is evaluative or descriptive; question word initial; gender (masculine/feminine); definite and indefinite articles; verb affixes mark number, person; passives; tense; comparatives; 20 consonants, 5 vowels, 5 diphthongs; non-tonal; stress on penultimate syllable. Silbo Gomero whistled variety of Spanish used in Canary Islands.
The Aragonese dialect of Spanish is different from Aragonese language [arg]. Christian.