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30 LOCAL FACTUAL ANSWERS · OFFICIAL EVIDENCE · CURRENT INVENTORY
Ereño, Bizkaia property and area FAQs
Ereño is a town and municipality located in the province of Biscay, in the autonomous community of the Basque Country, northern Spain. Ereño is famous for its ″marble″. In the 1st century CE the Romans were mining the quarries, which are no longer being used. There are literary references that call Ereño the "capital of the marble route". This material can be found in numerous buildings in Urdaibai and also on the other side of the ocean. The decorative limestone Rojo Ereño was named one of the IUGS Heritage Stones in 2024.
Place and geography
What is Ereño like?
Ereño is a town and municipality located in the province of Biscay, in the autonomous community of the Basque Country, northern Spain.
What does the official settlement record show for Ereño?
The current IGN Nomenclátor extract records 1 official population nucleus for Ereño. The imported source records are dated through 2025-11-27. The entry explicitly marked as the municipal capital is Elexalde-Zeeta, at a recorded elevation of approximately 278 metres. Nomenclátor entries describe settlement geography; they are not listing totals, neighbourhood boundaries or evidence of homes currently available for sale.
What else is documented about Ereño?
Ereño is famous for its ″marble″. In the 1st century CE the Romans were mining the quarries, which are no longer being used. There are literary references that call Ereño the "capital of the marble route". This material can be found in numerous buildings in Urdaibai and also on the other side of the ocean. The decorative limestone Rojo Ereño was named one of the IUGS Heritage Stones in 2024.
What is the recorded municipal area for Ereño?
The linked structured municipality record gives an area of 10.7 square kilometres for Ereño municipality. This is municipal geography, not a property-search radius.
Does Ereño have a linked official website?
Yes. The structured municipality record includes an official website field. NLS treats that as identity context and not as property-market evidence.
How many residents per square kilometre do the cited Ereño figures imply?
Dividing the INE population of 272 by the recorded municipal area of 10.7 km² gives approximately 25.5 residents per km² for Ereño municipality. This is a transparent calculation from the two cited values.
What geographic scope do the facts for Ereño use?
The stated official-data scope is Ereño municipality. Current NLS listings use the property-search area itself, while official market and demographic measures keep their own published geography visible.
Which province is Ereño in?
Ereño is in Bizkaia province. Province-level figures are explicitly labelled when a municipality-level series is unavailable.
How does NLS avoid mixing Ereño with similarly named places?
NLS resolves the municipality context through INE code 48033 and keeps the province label Bizkaia. Name-only fuzzy matching is not used to assign official market values.
What is the official INE code used for Ereño?
The official municipality context used for Ereño has INE code 48033. That code prevents same-name municipalities in different provinces from being combined.
People and households
What is the latest official population shown for Ereño?
The latest imported INE population for Ereño municipality is 272, for period 2023.
How has the recorded population changed in Ereño?
Across the first and latest points in the displayed INE series for Ereño municipality, recorded population changed by 6.7%. This describes the published series, not a forecast.
What net income per person is recorded for Ereño?
The latest imported INE household-income atlas value for Ereño municipality is €20,197 net income per person, for period 2023.
What is the recorded average age in Ereño?
INE records an average age of 49.9 years for Ereño municipality, for period 2023.
Which published period has the largest population value for Ereño?
Within the 9 displayed observations for Ereño municipality, the highest population value is 276 residents in 2022.
What is the simple mean of the published population observations used for Ereño?
The simple arithmetic mean across the 9 displayed population observations for Ereño municipality is 259 residents. It is calculated from the published points and is not a separate official benchmark.
What share of residents in Ereño is aged 65 or over?
INE records 32.7% of residents aged 65 or over for Ereño municipality, in period 2023.
What is the average household size in Ereño?
The latest imported INE figure is 2.40 people per household for Ereño municipality, for period 2023.
What change separates the first and latest displayed population values for Ereño?
From 2015 to 2023, the displayed population value for Ereño municipality changed by 6.7%. This is a historical comparison between two published points, not a forecast.
How extensive is the current population series used for Ereño?
The page uses 9 published observations for Ereño municipality, running from 2015 to 2023.
Property market evidence
What foreign-buyer share is shown for the wider Ereño market?
Registradores reports a foreign-buyer share of 4.7% for País Vasco in 2026Q2. It is regional context, not a municipality estimate.
What is the earliest displayed Ereño regional foreign-buyer share observation?
The displayed series for País Vasco begins at 3.8% in 2024Q3. This is the earliest point in the current imported series, not an estimate for an earlier period.
When does the current regional foreign-buyer share series for Ereño reach its maximum?
Within the 8 displayed observations for País Vasco, the highest regional foreign-buyer share value is 4.7% in 2026Q2.
Which published period has the smallest regional foreign-buyer share value for Ereño?
Within the same displayed series for País Vasco, the lowest regional foreign-buyer share value is 3.5% in 2026Q1.
How much transaction history is shown for Ereño?
The page displays 12 quarterly MITMA observations for Ereño municipality, up to the latest published period in the chart.
What is the simple mean of the published registered sale-price benchmark observations used for Ereño?
The simple arithmetic mean across the 8 displayed registered sale-price benchmark observations for Bizkaia province is €3,071 per m². It is calculated from the published points and is not a separate official benchmark.
Where does the published quarterly transaction count series for Ereño begin?
The displayed series for Ereño municipality begins at 0 transactions in 2023Q3. This is the earliest point in the current imported series, not an estimate for an earlier period.
What is the latest quarterly housing transaction count for Ereño?
The latest displayed MITMA point records 0 housing transactions in 2026Q2 for Ereño municipality.
Across the shown periods, what does the regional house-price index series average for Ereño?
The simple arithmetic mean across the 8 displayed regional house-price index observations for País Vasco is 99.7 index points. It is calculated from the published points and is not a separate official benchmark.
Current property inventory
How many properties are currently listed in Ereño on NLS?
The current eligible public inventory contains 0 listings for Ereño. The count excludes sold, withdrawn, expired, rejected, draft, private, off-market and feed-private records.
How to read these answers
Current listings and asking prices can change. Institutional figures update on their own publication cycles and may use municipality, province or autonomous-community scope. Compare unlike measures only after checking their stated geography and period. This page is market context, not a valuation, forecast, legal opinion or investment recommendation.