Bilbao, also known as Bilbo, is a city located in northern Spain within the autonomous community of the Basque Country. It serves as the largest city in the province of Biscay and is the most populous city in northern Spain. As of 2024, the city has a population of 347,342.
The Bilbao metropolitan area has a population of 1,037,847, making it the most populous metropolitan area in northern Spain. Additionally, the comarca of Greater Bilbao is recognized as the fifth-largest urban area in Spain and serves as the main urban area within the Greater Basque region.