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Saint-Oyen: 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.

Liveability index free for any address

Search for an address in Saint-Oyen

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 Du Grand Saint - Bernard 1, Saint-Oyen.

Saint-Oyen, on the road to the Great St Bernard

The main road that climbs from Aosta to the Great St Bernard Pass and the tunnel into Switzerland runs up a narrow, green side valley, and Saint-Oyen is one of the villages along it, at around 1,400 metres. As everywhere in the Aosta Valley, place names are French and the region is officially bilingual.

These are mountain homes. Climate zone F means long, snowy winters with the heating on for much of the year, so insulation, windows and the type of heating system make a big difference to running costs. Traditional houses have stone walls and often roofs of stone slabs, which need specialist maintenance. For schools, healthcare and shops the reference is Aosta, at the bottom of the valley.

The village also lives on through traffic and tourism: in Overture Maps data there are 25.77 places to eat per 1,000 residents, against 9.39 across the region. In 2023 there were 194 residents, down 10.6% on 2011, according to Istat, the national statistics office. The estimated average age is 48.3, against 47.0 in the Aosta Valley, and foreign residents make up just 1.5%. Declared incomes are above the regional average.

All 74 municipalities in the Aosta Valley are in seismic zone 3 under the Civil Protection classification. In Saint-Oyen expected ground acceleration is about 0.115 g: with a stone house, find out whether the roof and floors have been redone and how they are tied into the walls.

In the mountains, avalanches, landslides and flash floods depend on the exact spot. The report reads the official maps for the address and finds the land parcel on the Revenue Agency's cadastral maps, which are published for the Aosta Valley too.

Key points

  • Village on the Great St Bernard road, at around 1,400 metres.
  • 194 residents in 2023, down 10.6% since 2011.
  • All 74 Aosta Valley municipalities in seismic zone 3.
  • Long winters: insulation and heating drive running costs.

Overview

Saint-Oyen 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 194 residents, ranked 65 of 74 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Saint-Oyen 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 0.115 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 10.6%. The estimated average age is 48 years, in line with the province. 27% of residents are over 65 (the regional figure is 25%). Foreign residents make up 1.5% of the population. On average, a household has 2.1 members.

Income and climate

In tax year 2024, taxpayers in Saint-Oyen declared an average taxable income of 30,003 euros, above the provincial average (26,152 euros). The Italian average is 24,895 euros.

Saint-Oyen is in climate zone F, with 4,292 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 1,373 metres above sea level.

Services

The data shows no schools within the municipality, against a provincial average of 1.7 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 2.6% of the land in Saint-Oyen, 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

Saint-Oyen is one of the municipalities designated as a radon priority area by the Regione Valle d'Aosta in 2026. According to the ISPRA map, the estimated radon emission in the municipality is high. Radon varies from building to building and can only be known by measuring it, especially on ground floors and in basements.

Official databases list no contaminated sites in Saint-Oyen.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Saint-Oyen: 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 Saint-Oyen 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 6 inhabited census areas in Saint-Oyen. Half of the residents live in areas scoring 60 or more.

Residents by band

  • fair 89.9%
  • good 10.1%

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

ISTAT code 007062. The text on this page is generated automatically from the data.