Sondrio: what to know before buying a home
A municipality in the province of Sondrio, Lombardia. Official data on earthquakes, population, services and transport.
Search for an address in Sondrio
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 Dante 7, Milan.
Sondrio, capital of the Valtellina
Sondrio is the smallest provincial capital in Lombardy and the gateway to the Valtellina, the long Adda valley enclosed by the Rhaetian Alps and the Orobie range. The sunny slopes above town are covered in terraced vineyards held up by dry-stone walls, and the valley is also known for bresaola, its air-dried beef. Beyond the mountains to the north runs the border with Switzerland.
At the end of 2023 Sondrio had 21,297 residents, 1.6% fewer than in 2011, or 11.9% of a province made up of 77 municipalities. The town is older than its surroundings: an estimated average age of 48 against 46.8 in the province, and 28.1% of residents over 65, well above Lombardy's 23.5%. Foreign nationals make up 10.8%, and households average 2 people.
Sondrio is classified in seismic zone 3, the second-lowest of four classes, like 64 municipalities in the province, while the remaining 13 are in zone 4. Expected ground acceleration in the built-up area is about 0.087 g, almost twice the estimate for Milano (Milan), so with an older building it is worth finding out how the structure was built and maintained.
As the capital of a mountain province, Sondrio hosts services that are thin on the ground elsewhere: 22 healthcare facilities, or 1.03 per 1,000 residents against 0.43 for the province, and 25 schools. Trenord's open timetables show one rail stop in the municipality, served by 3 train lines. Cadastral maps from the Revenue Agency (Agenzia delle Entrate) are available, and the report finds the plot from the address. In an Alpine valley full of streams and steep slopes, landslide and flood hazard depends heavily on the exact location: the report checks it for the address, together with local price ranges.
Key points
- Lombardy's smallest provincial capital: 21,297 residents.
- 28.1% of residents over 65, against 23.5% for Lombardy.
- Seismic zone 3, expected acceleration about 0.087 g.
- Healthcare facilities: 1.03 per 1,000 residents against 0.43 provincially.
Overview
Sondrio is the capital of the province of Sondrio, in Lombardia. At the end of 2023 it had 21,297 residents, the most populous municipality in the province.
Earthquakes
For Italy's Civil Protection Department, Sondrio is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (64 of 77) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.087 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.
Landslides and flooding
Landslide and flood risk changes from one street to the next, even within the same municipality: for this reason we do not summarise it as a single figure for the whole of Sondrio.
The report checks the exact address against the ISPRA national maps and tells you in plain words whether the building falls within an at-risk area. The official map is also available on IdroGEO.
House prices
We do not publish price tables by municipality. The report gives the minimum and maximum price per square metre for the address's zone, from the Revenue Agency's OMI valuations, with the reference half-year. It is a range for the zone, not the value of a specific home.
Population
Compared with the 2011 census, the resident population has fallen by 1.6%. The estimated average age is 48 years, in line with the province. 28% of residents are over 65 (the regional figure is 24%). Foreign residents make up 10.8% of the population. On average, a household has 2.1 members.
Services
In the official Ministry of Education and Ministry of Health lists, Sondrio has 25 schools and 6 pharmacies. The Overture Maps data also lists 14 grocery shops and supermarkets, 22 healthcare facilities, 19 sports facilities and 5 parks and green areas.
There are 1.0 healthcare facilities per 1,000 residents, more than the province average (0.4).
This data is gathered from several providers: services may be missing or closed businesses may still appear. The report counts services within 500 metres and 1 kilometre of the address.
Public transport
Within the municipality there are 1 public transport stops, served by 3 train lines, 1 bus line. That is about 0.0 stops per 1,000 residents.
Land registry
The Revenue Agency publishes the cadastral maps for Sondrio: the report finds the building's parcel, that is its sheet and parcel number, starting from the address.
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 2026-08-19.0.
- Public transport timetables (GTFS): Trenord, Regione Lombardia - Trenord, orari ferroviari (GTFS). Licence CC BY 4.0, version 20260923.
- List of Italian municipalities, Istat. Licence CC BY 4.0, updated to 21 February 2026.
ISTAT code 014061. The text on this page is generated automatically from the data.