Gressoney-La-Trinité: 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-La-Trinité
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: Localita' Tschaval 1, Gressoney-La-Trinité.
Gressoney-La-Trinité, the head of the valley below Monte Rosa
Gressoney-La-Trinité fills the upper Lys valley below the glaciers of Monte Rosa, with the town hall at over sixteen hundred metres. It is a Walser community: the German-speaking settlers who arrived centuries ago left timber and stone houses, place names and a language of their own. Today the village lives on tourism, with ski lifts that are part of the Monte Rosa ski area, and on hiking and mountaineering in summer.
The property market is that of a mountain resort: many flats and chalets are second homes, and anyone buying to live here should budget for long winters, heavy snow and high heating costs (climate zone F). Insulation, heating, shared building costs and the snow load on the roof all matter. Avalanche, landslide and stream flood exposure are checked address by address on the official maps the report consults.
The village is small but not emptying: 320 residents in 2023, up 2.9% on 2011, according to Istat, Italy's national statistics office. The population is young for the mountains, with an average age of 42.0 against 47.0 for the Aosta Valley and over-65s at 18.4%. Foreign residents make up 4.1%. Declared incomes are above the regional average.
All 74 municipalities of the Aosta Valley are in seismic zone 3 on the Civil Protection Department's national scale, and expected ground acceleration here is about 0.074 g, a low value. In Walser timber and stone houses, upkeep of the woodwork and the roof matters more than earthquake risk.
The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps, and the report goes from the address to the land parcel.
Key points
- Upper Lys valley below Monte Rosa, a Walser village and ski resort.
- 320 residents in 2023, up 2.9% since 2011.
- Average age 42.0, younger than the Aosta Valley as a whole.
- All 74 Aosta Valley municipalities in seismic zone 3.
Overview
Gressoney-La-Trinité 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 320 residents, ranked 59 of 74 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Gressoney-La-Trinité 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 0.074 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 grown by 2.9%. The estimated average age is 42 years, lower than the province average (47). 18% of residents are over 65 (the regional figure is 25%). Foreign residents make up 4.1% of the population. On average, a household has 2.3 members.
Income and climate
In tax year 2024, taxpayers in Gressoney-La-Trinité declared an average taxable income of 29,944 euros, above the provincial average (26,152 euros). The Italian average is 24,895 euros.
Gressoney-La-Trinité is in climate zone F, with 4,787 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 1,635 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Gressoney-La-Trinité has 2 schools and 1 pharmacy. The Overture Maps data also lists 2 sports facilities and 1 green area.
The data shows no grocery shops and supermarkets within the municipality, against a provincial average of 0.8 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 0.7% of the land in Gressoney-La-Trinité, 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-La-Trinité is one of the municipalities designated as a radon priority area by the Regione Valle d'Aosta in 2026. 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-La-Trinité. 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-La-Trinité: 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-La-Trinité 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 20 inhabited census areas in Gressoney-La-Trinité. Half of the residents live in areas scoring 64 or more.
Residents by band
- fair 71.1%
- good 28.9%
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 007032. The text on this page is generated automatically from the data.