Alsasua – Altsasu
| Altsasu/Alsasua Altsasu Alsasua | |
|---|---|
|  Aerial view of Altsasu/Alsasua | |
|  Flag  Coat of arms | |
|   Altsasu/Alsasua Location of Altsasu/Alsasua within Navarre   Altsasu/Alsasua Location of Altsasu/Alsasuawithin Spain | |
| Coordinates: 42°53′43″N 2°10′8″W / 42.89528°N 2.16889°W | |
| Country |  Spain | 
| Autonomous community |  Navarre | 
| Province | Navarre | 
| Comarca/Eskualdea | La Barranca/Sakana | 
| Government | |
| • Alcalde (Mayor) | Javier Ollo Martínez[1] (Geroa Bai) | 
| Area | |
|  • Total | 26.72 km2 (10.32 sq mi) | 
| Population  (2018)[2] | |
|  • Total | 7,407 | 
| • Density | 280/km2 (720/sq mi) | 
| (INE) | |
| Demonym | alsasuarra | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Postal code | 31800 | 
Alsasua (in Spanish; Altsasu in Basque; official name: Altsasu/Alsasua) is a town located in the autonomous community of Navarre, northern Spain. Its population in 2017 was 7,419.[3] The Battle of Alsasua took place here in 1834. 30 years later the town turned into a railway hub, transforming its demography, economy, and cultural landscape. In 2016, a fight erupting in a bar escalated into an Audiencia Nacional judicial case that stirred the town. The bus and coach building company Sunsundegui had its factory in the town and was a major local employer, but the company closed in 2025.

References
- ^ Municipal Register of Spain 2018. National Statistics Institute.
- ^ "Spanish Statistic Institute".