Basque ( BASK, BAHSK; euskara [eus̺ˈkaɾa]) is a language spoken by Basques and other residents of the Basque Country, a region that straddles the westernmost Pyrenees in adjacent parts of southwestern France and northern Spain. Basque is classified as a language isolate (unrelated to any other known languages), the only one in Europe. The Basques are indigenous to and primarily inhabit the Basque Country. The Basque language is spoken by 806,000 Basques in all territories. Of them, 93.7% (756,000) are in the Spanish area of the Basque Country and the remaining 6.3% (51,000) are in the French portion.
Native speakers live in a contiguous area that includes parts of four Spanish provinces and the three "ancient provinces" in France. Gipuzkoa, most of Biscay, a few municipalities on the northern border of Álava and the northern area of Navarre formed the core of the remaining Basque-speaking area before measures were introduced in the 1980s to strengthen Basque fluency. By contrast, most of Álava, the westernmost part of Biscay, and central and southern Navarre are predominantly populated by native speakers of Spanish, either because Basque was replaced by either Navarro-Aragonese or Spanish over the centuries (as in most of Álava and central Navarre), or because it may never have been spoken there (as in parts of Enkarterri and south-eastern Navarre).