Altsasu/Alsasua
Altsasu Alsasua | |
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Aerial view of Altsasu/Alsasua | |
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Flag Coat of arms | |
Altsasu/Alsasua Location of Altsasu/Alsasua within Navarre Show map of NavarreAltsasu/Alsasua Location of Altsasu/Alsasuawithin Spain Show map of Spain | |
| Coordinates: 42°53′43″N 2°10′8″W / 42.89528°N 2.16889°W / 42.89528; -2.16889 | |
| Country | |
| Autonomous community | |
| Province | Navarre |
| Comarca/Eskualdea | La Barranca/Sakana |
| Government | |
| • Alcalde (Mayor) | Javier Ollo Martínez1 (Geroa Bai) |
| Area | |
• Total | 26.72 km2 (10.32 sq mi) |
| Population (2025-01-01)2 | |
• Total | 7,717 |
| • Density | 288.8/km2 (748.0/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
References
- National Statistics Institute (13 December 2025). "Municipal Register of Spain of 2025".
- "Spanish Statistic Institute".