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Chiusi: what to know before buying a home

A municipality in the province of Siena, Toscana. Official data on earthquakes, population, services and transport.

Liveability index free for any address

Search for an address in Chiusi

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 Giuseppe Mazzini 1, Chiusi.

Chiusi, the Etruscan hill town and the station below

Chiusi comes in two parts that feel like separate towns. Up on the hill is the old city, one of the great Etruscan centres, with the national archaeological museum, painted tombs in the countryside and ancient tunnels running beneath the centre. Down in the Val di Chiana is Chiusi Scalo, which grew up around the station on the Florence to Rome line and close to the exit of the A1 motorway.

That location is Chiusi's main asset for people who live here and work elsewhere: trains reach Florence and Rome, and the A1 is a few minutes away. The municipality sits in the south-eastern corner of the province of Siena, on the border with Umbria, between Lake Chiusi and Lake Montepulciano. In the old town buyers mostly find flats in historic buildings; at the Scalo, newer houses and apartment blocks, usually cheaper.

Istat, the national statistics institute, counted 8,116 residents in 2023, down 8.1% on 2011. The population is old, with an average age of 48.5 and over-65s at 29.3%, above the provincial 26.9%. Foreign residents make up 16.9%, a high share for the area. Households are small, 2.18 people on average, and incomes are below the Siena average.

Chiusi is in seismic zone 3 under the Civil Protection classification, like most of the province of Siena (31 municipalities), with an expected ground acceleration of about 0.147 g. In the old town, made up of masonry buildings on a hill riddled with ancient tunnels, it is worth having the structure checked and asking whether the building has been strengthened.

The Revenue Agency (Agenzia delle Entrate) publishes the cadastral maps, so the report can go from the address to the plot. On the Chiana plain, between the lakes and the drainage canals, flood hazard is read for the individual address; on the hill, slopes matter more.

Key points

  • Etruscan town on the hill, Chiusi Scalo with station and A1 below.
  • Direct trains to Florence and Rome on the Val di Chiana line.
  • Over-65s at 29.3%, foreign residents at 16.9%.
  • Seismic zone 3, expected ground acceleration about 0.147 g.

Overview

Chiusi is a municipality in the province of Siena, in Toscana. At the end of 2023 it had 8,116 residents, ranked 10 of 35 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Chiusi is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (31 of 35) are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.147 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 8.1%. The estimated average age is 49 years, in line with the province. 29% of residents are over 65 (the regional figure is 26%). Foreign residents make up 16.9% of the population. On average, a household has 2.2 members.

Income and climate

In tax year 2024, taxpayers in Chiusi declared an average taxable income of 22,773 euros, below the provincial average (25,404 euros). The Italian average is 24,895 euros.

Chiusi is in climate zone D, with 2,022 heating degree days: heating may be switched on from 1 November to 15 April, for up to 12 hours a day. The same table puts the town hall at 398 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Chiusi has 9 schools and 3 pharmacies. The Overture Maps data also lists 7 grocery shops and supermarkets, 7 healthcare facilities, 10 sports facilities and 2 parks and green areas.

There are 0.9 grocery shops and supermarkets per 1,000 residents, more than the province average (0.6).

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 8.1% of the land in Chiusi, 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

Chiusi is not among the radon priority areas designated 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 no open contaminated sites in Chiusi; one has been cleaned up or closed.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Chiusi: 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 Chiusi 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 63 inhabited census areas in Chiusi. Half of the residents live in areas scoring 63 or more.

Residents by band

  • modest 2.7%
  • fair 54.9%
  • good 42.5%

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 052011. The text on this page is generated automatically from the data.