Abbadia San Salvatore: what to know before buying a home
A municipality in the province of Siena, Toscana. Official data on earthquakes, population, services and transport.
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Search for an address in Abbadia San Salvatore
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 Remedi 1, Abbadia San Salvatore.
Abbadia San Salvatore, the abbey and mines of Monte Amiata
On the eastern side of Monte Amiata, the extinct volcano of southern Tuscany, Abbadia San Salvatore stands at over 800 metres. The town grew around the medieval abbey of San Salvatore, which gives it its name, and for much of the twentieth century it lived off its mercury mines, closed for decades and now turned into a museum park. In winter people head up to the ski lifts near the summit, and on Christmas Eve the streets are lit by the fiaccole, huge stacks of firewood that burn late into the night.
The medieval centre is built of stone, with narrow lanes and tall houses packed together; around it are districts built during the mining years and newer villas. Many homes are second homes for summer or the snow, and prices are low compared with the rest of the province of Siena. At this altitude heating is a major expense: long winters, snow, and often old systems and poorly insulated houses. Declared incomes are well below the Siena average.
The town is losing people and getting older. Istat, the national statistics institute, counted 6,128 residents in 2023, down 6.5% since 2011; the average age is 49.7 and over-65s make up 31.0%, against 26.9% in the province. Foreign residents, on the other hand, are numerous for a mountain town, at 14.7%.
In the province of Siena only 4 municipalities, all in the volcanic area of Monte Amiata and its surroundings, are in seismic zone 2; the other 31 are in zone 3. The expected ground acceleration in Abbadia is about 0.140 g. For stone houses in the old town, the condition of the walls, timber floors and roof is what counts: have a surveyor look at them before making an offer.
On the slopes of the mountain the report checks landslide hazard for each address, and the Revenue Agency's cadastral maps let it trace the plot.
Key points
- Over 800 metres on Monte Amiata: long winters, high heating bills.
- Over-65s at 31.0%, against 26.9% in the province.
- One of 4 Siena municipalities in seismic zone 2.
- Population down 6.5% since 2011.
Overview
Abbadia San Salvatore is a municipality in the province of Siena, in Toscana. At the end of 2023 it had 6,128 residents, ranked 15 of 35 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Abbadia San Salvatore is in seismic zone 2, a zone where strong earthquakes are possible. Only 4 of 35 municipalities in the province are in zone 2.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.140 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.
For anyone buying in Abbadia San Salvatore, the building matters a great deal: ask for the design year, whether it met the 2008 seismic standards, and whether any seismic retrofit has been carried out.
Population
Compared with the 2011 census, the resident population has fallen by 6.5%. The estimated average age is 50 years, higher than the province average (48). 31% of residents are over 65 (the regional figure is 26%). Foreign residents make up 14.7% of the population. On average, a household has 2.0 members.
Income and climate
In tax year 2024, taxpayers in Abbadia San Salvatore declared an average taxable income of 20,554 euros, below the provincial average (25,404 euros). The Italian average is 24,895 euros.
Abbadia San Salvatore is in climate zone E, with 2,994 heating degree days: heating may be switched on from 15 October to 15 April, for up to 14 hours a day. The same table puts the town hall at 822 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Abbadia San Salvatore has 4 schools and 2 pharmacies. The Overture Maps data also lists 3 grocery shops and supermarkets, 3 healthcare facilities, 3 sports facilities and 2 parks and green areas.
There are 0.7 schools per 1,000 residents, fewer than the province average (0.9).
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 4.1% of the land in Abbadia San Salvatore, compared with 4.0% in the province and 6.2% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Abbadia San Salvatore is one of the municipalities designated as a radon priority area by the Regione Toscana in 2025. 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 3 contaminated sites, or sites still under investigation, in Abbadia San Salvatore, and 3 more have 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 Abbadia San Salvatore: 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 Abbadia San Salvatore 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 31 inhabited census areas in Abbadia San Salvatore. Half of the residents live in areas scoring 83 or more.
Residents by band
- fair 2.4%
- good 35.7%
- very good 61.9%
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 Toscana, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2025.
- 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 052001. The text on this page is generated automatically from the data.