Leioa, in the Basque Country, is part of the province of Biscay. The municipality covers about 7.4 km² and had 32,748 inhabitants on 1 January 2025.
With about 4,425 inhabitants per km², it is one of the most densely populated areas in the country, part of a large metropolitan area. Of the 35 municipalities in the province of Biscay with at least 5,000 inhabitants, it is number 7 by population.
As the crow flies it lies about 9 km north-west of Bilbao, the provincial capital.
Nearby, within a few dozen kilometres, are other destinations featured in our guides: Erasmus in Bilbao (8 km), Guggenheim (8 km), Bilbao (8 km), Castro Urdiales (20 km).
Below you will find a map of neighbouring municipalities, the weather, places to stay in the area and a link to all the municipalities in the province of Biscay.