Altsasu / Alsasua, Navarra property and area FAQs

Alsasua (in Spanish; Altsasu in Basque; official name: Altsasu/Alsasua) is a town located in the autonomous community of Navarre, northern Spain. 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.

For Altsasu / Alsasua, the IGN Nomenclátor currently lists 1 official population nucleus. The imported source records are dated through 2025-11-27. The entry explicitly marked as the municipal capital is Altsasu/Alsasua, at a recorded elevation of approximately 528 metres. Nomenclátor entries describe settlement geography; they are not listing totals, neighbourhood boundaries or evidence of homes currently available for sale.

The linked structured municipality record gives an area of 26.8 square kilometres for Altsasu / Alsasua municipality. This is municipal geography, not a property-search radius.

The sourced municipality record gives a reference elevation of approximately 528 metres. Elevation can vary within the municipality and is not a property-specific measurement.

The audited municipality record contains 2 additional named-place records for Altsasu / Alsasua municipality. This count describes geographic records, not neighbourhood boundaries or properties for sale.

Altsasu / Alsasua is treated as an official municipality. The page is joined to institutional datasets by its five-digit INE identity, not by a loose name match.

Yes. The structured municipality record includes an official website field. NLS treats that as identity context and not as property-market evidence.

The stated official-data scope is Altsasu / Alsasua municipality. Current NLS listings use the property-search area itself, while official market and demographic measures keep their own published geography visible.

The current IGN Nomenclátor extract records 1 official population nucleus for Altsasu / Alsasua municipality. These are settlement records, not property listings.

NLS resolves the municipality context through INE code 31010 and keeps the province label Navarra. Name-only fuzzy matching is not used to assign official market values.

Altsasu / Alsasua is an official municipality in Navarra province, Spain. Its exact municipality identity is used for the official evidence on this page.

Altsasu / Alsasua is shown within Navarra province. Province-level figures are explicitly labelled when a municipality-level series is unavailable.

The official municipality context used for Altsasu / Alsasua has INE code 31010. That code prevents same-name municipalities in different provinces from being combined.

The latest imported INE population for Altsasu / Alsasua municipality is 7,567, for period 2023.

Across the first and latest points in the displayed INE series for Altsasu / Alsasua municipality, recorded population changed by 1.5%. This describes the published series, not a forecast.

The latest imported INE household-income atlas value for Altsasu / Alsasua municipality is €15,986 net income per person, for period 2023.

INE records an average age of 44.6 years for Altsasu / Alsasua municipality, for period 2023.

The latest imported INE figure is 2.50 people per household for Altsasu / Alsasua municipality, for period 2023.

Within the 9 displayed observations for Altsasu / Alsasua municipality, the highest population value is 7,567 residents in 2023.

The population figure uses INE period 2023. The page shows the period beside the value so it is not mistaken for a live counter.

The page uses 9 published observations for Altsasu / Alsasua municipality, running from 2015 to 2023.

Within the same displayed series for Altsasu / Alsasua municipality, the lowest population value is 7,370 residents in 2017.

INE records 21.8% of residents aged 65 or over for Altsasu / Alsasua municipality, in period 2023.

The simple arithmetic mean across the 9 displayed population observations for Altsasu / Alsasua municipality is 7,453 residents. It is calculated from the published points and is not a separate official benchmark.

From 2015 to 2023, the displayed population value for Altsasu / Alsasua municipality changed by 1.5%. This is a historical comparison between two published points, not a forecast.

The imported INE nationality series implies a non-Spanish resident share of 10.6% for Altsasu / Alsasua municipality, in period 2023.

The current Consejo General del Notariado snapshot for Altsasu / Alsasua municipality records €1,261 per square metre. It is completed-sale evidence, not an asking-price figure.

The current Notariado snapshot records an average completed sale price of €109,007 for Altsasu / Alsasua municipality. An aggregate average is not a valuation of an individual home.

The price-informed transactions in the Notariado snapshot have an average recorded surface of 86 m² for Altsasu / Alsasua municipality.

The published price measures use 82 price-informed sales from 100 total recorded transactions for Altsasu / Alsasua municipality.

From 2024Q3 to 2026Q2, the displayed regional house-price index value for Navarra, Comunidad Foral de changed by 18.5%. This is a historical comparison between two published points, not a forecast.

The page displays 12 quarterly MITMA observations for Altsasu / Alsasua municipality, up to the latest published period in the chart.

From 2023Q3 to 2026Q2, the displayed quarterly transaction count value for Altsasu / Alsasua municipality changed by 13.0%. This is a historical comparison between two published points, not a forecast.

Within the 8 displayed observations for Navarra province, the highest registered sale-price benchmark value is €2,278 per m² in 2026Q2.

The displayed series for Altsasu / Alsasua municipality begins at 23 transactions in 2023Q3. This is the earliest point in the current imported series, not an estimate for an earlier period.

Within the 8 displayed observations for Navarra, Comunidad Foral de, the highest regional house-price index value is 109.2 index points in 2026Q2.

82 of 100 recorded transactions inform the published price measures for Altsasu / Alsasua municipality, equal to 82.0%.

Within the same displayed series for Navarra, Comunidad Foral de, the lowest regional house-price index value is 92.0 index points in 2024Q4.

Within the same displayed series for Altsasu / Alsasua municipality, the lowest quarterly transaction count value is 17 transactions in 2023Q4.

The current eligible public inventory contains 0 listings for Altsasu / Alsasua. The count excludes sold, withdrawn, expired, rejected, draft, private, off-market and feed-private records.