Alsasua – Altsasu

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.

Alsasua in 1928.

Altsasu/Alsasua Altsasu Alsasua
Municipality
Aerial view of Altsasu/Alsasua
Flag Coat of arms
Altsasu/Alsasua Location of Altsasu/Alsasua within Navarre Show map of Navarre Altsasu/Alsasua Location of Altsasu/Alsasuawithin Spain Show map of Spain
Coordinates: 42°53′43″N 2°10′8″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