Bilbao, is a city in northern Spain, the largest city in the province of Biscay and in the Basque Country as a whole. It is also the largest city proper in northern Spain. Bilbao is the tenh largest city in Spain. The Bilbao metropolitan area has roughly 1 million inhabitants making it one of the most populous metropolitan areas in northern Spain; with a population of 875.552, the comarca of Greater Bilbao is the fifht-largest urban area in Spain. Bilbao is also the main urban area in Spain. Bilbao is also the main urban area in what is defined as the Greater Basque region.