Gressoney-Saint-Jean: what to know before buying a home
A municipality in the province of Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste. Official data on earthquakes, population, services and transport.
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Search for an address in Gressoney-Saint-Jean
The report looks at the exact point: landslide and flood risk, seismic zone, price per square metre for the area, services and nearby stops.
For example: Via Ondre Biel Waeg 1, Gressoney-Saint-Jean.
Gressoney-Saint-Jean, Walser heritage and Castel Savoia
In the Lys valley, which climbs towards Monte Rosa, Gressoney-Saint-Jean is one of the Walser villages, home to a German-speaking community that settled here in the Middle Ages. Timber and stone houses, the names of the hamlets and the language still spoken by some residents keep that history visible. Above the village stands Castel Savoia, the residence built for Queen Margherita.
For buyers, Gressoney-Saint-Jean is a mountain market with many second homes: apartments, chalets and restored old Walser houses. The lifts of the Monte Rosa ski area can be reached within the valley, and Overture Maps, an open map database, lists 25 bars and restaurants in the village. Above 1,300 metres this is climate zone F: heating for most of the year, snow on the roofs and access roads to keep clear.
There were 760 residents in 2023, down 6.6% since 2011. The average age is 47.9 (Aosta Valley figure 47.0) and over-65s make up 26.1%. Foreign residents account for 4.6%. Average declared income is in line with the regional figure.
Seismic hazard makes no distinction between villages in the region: all 74 municipalities in the Aosta Valley are in zone 3, and here the expected ground acceleration is about 0.061 g. In Walser houses of timber and stone, look instead at the condition of the beams, the roof and the services.
The Revenue Agency (Agenzia delle Entrate) cadastral maps cover the municipality: the report finds the land parcel from the address. Along the Lys river and on the slopes, the official landslide and flood maps need to be read for the precise location of the house.
Key points
- Walser village in the Lys valley, below Monte Rosa.
- Many holiday homes, 25 bars and restaurants.
- Population down 6.6% since 2011.
- All 74 Aosta Valley municipalities in seismic zone 3.
Overview
Gressoney-Saint-Jean is a municipality in the province of Valle d'Aosta/Vallée d'Aoste, in Valle d'Aosta/Vallée d'Aoste. At the end of 2023 it had 760 residents, ranked 39 of 74 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Gressoney-Saint-Jean is in seismic zone 3, a zone where strong earthquakes are possible but rare. All 74 municipalities in the province are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.061 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.
Even in zone 3, seismic standards apply to new buildings: for an older building, ask about the design year and any structural work.
Population
Compared with the 2011 census, the resident population has fallen by 6.6%. The estimated average age is 48 years, in line with the province. 26% of residents are over 65 (the regional figure is 25%). Foreign residents make up 4.6% of the population. On average, a household has 2.0 members.
Income and climate
In tax year 2024, taxpayers in Gressoney-Saint-Jean declared an average taxable income of 26,125 euros, in line with the province (26,152 euros). The Italian average is 24,895 euros.
Gressoney-Saint-Jean is in climate zone F, with 4,726 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 1,385 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Gressoney-Saint-Jean has 3 schools and 1 pharmacy. The Overture Maps data also lists 2 grocery shops and supermarkets, 3 sports facilities and 2 parks and green areas.
The data shows no healthcare facilities within the municipality, against a provincial average of 0.5 per 1,000 residents.
Public transport
We do not yet have open public transport timetables for this municipality: the report says so explicitly, without inventing distances.
How built-up it is
Buildings, roads, car parks and other sealed surfaces cover 1.3% of the land in Gressoney-Saint-Jean, compared with 2.2% in the province and 2.2% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Gressoney-Saint-Jean is not among the radon priority areas designated by the Regione Valle d'Aosta in 2026. According to the ISPRA map, the estimated radon emission in the municipality is medium. Radon varies from building to building and can only be known by measuring it, especially on ground floors and in basements.
Official databases list one contaminated site, or site still under investigation, in Gressoney-Saint-Jean, and one more has been cleaned up or closed. The report tells you whether one is close to the address.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Gressoney-Saint-Jean: the report checks the address against the ISPRA maps.
House prices
The Revenue Agency's price ranges per square metre (OMI) apply to zones, not to whole municipalities: the report gives the range for the address's zone.
Land registry
The cadastral maps for Gressoney-Saint-Jean are public: from the address the report finds the sheet and parcel number.
Liveability area by area
The Vicinalia liveability index runs from 0 to 100 and looks at the place, not the people who live there: services within walking distance, transport, green space, natural hazards, air, quiet, buildings and connection. Here it is worked out at the centre of each of the 27 inhabited census areas in Gressoney-Saint-Jean. Half of the residents live in areas scoring 63 or more.
Residents by band
- fair 53.4%
- good 46.6%
Vicinalia index by census area, licence CC BY-SA 4.0. Data: IdroGEO ISPRA (2026), Istat, INGV, EEA, AGCOM, Overture Maps and OpenStreetMap.
The colour is the value at the centre of the area. For an exact address, search for it above: the free check looks at that exact point. How the index is worked out
Data sources
- Seismic classification of municipalities, Dipartimento della Protezione Civile. Licence CC BY 4.0, updated to 2025-05.
- MPS04 seismic hazard model, INGV. Licence CC BY 4.0, 2004 model.
- Data by census section, Istat. Licence CC BY 4.0, residents at the end of 2023, compared with the 2011 census.
- Places, Overture Maps Foundation. Licence CDLA Permissive 2.0 and others depending on provider, release 2026-10-21.0.
- Income and main IRPEF variables by municipality, MEF, Dipartimento delle Finanze. Licence CC BY 3.0 IT, tax year 2024.
- Climate zones and heating degree days of municipalities (Presidential Decree 412/1993, Annex A), Normattiva. Licence CC BY 4.0, current text.
- Land take, territorial dynamics and ecosystem services, ISPRA e SNPA. Licence CC BY 4.0, 2024 data.
- Predictive radon map by municipality, ISPRA. Licence CC BY 4.0, version 2022-11.
- Radon priority areas (Legislative Decree 101/2020), Regione Valle d'Aosta, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2026.
- Contaminated sites, ISPRA, MOSAICO - Banca dati nazionale dei siti oggetto di procedimento di bonifica. Licence CC BY 4.0, updated to 12 November 2026.
- Liveability index by census area, Vicinalia, from the data in the report sections. Licence CC BY-SA 4.0, worked out on 30 September 2026.
- List of Italian municipalities, Istat. Licence CC BY 4.0, updated to 21 February 2026.
ISTAT code 007033. The text on this page is generated automatically from the data.