Altsasu, in Navarre, is part of the province of Navarre. The municipality covers about 27.7 km² and had 7,717 inhabitants on 1 January 2025.
With about 279 inhabitants per km², it combines a medium-sized town with residential districts, farmland and business areas. Of the 21 municipalities in the province of Navarre with at least 5,000 inhabitants, it is number 18 by population.
As the crow flies it lies about 45 km west of Pamplona, the provincial capital. The nearest major city is Bilbao, about 70 km away.
Nearby, within a few dozen kilometres, are other destinations featured in our guides: Vitoria-Gasteiz (40 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 Navarre.