Gonnosnò: what to know before buying a home
A municipality in the province of Oristano, Sardegna. Official data on earthquakes, population, services and transport.
Liveability index free for any address
Land sheet 6 free checks
Search for an address in Gonnosnò
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: Corso Umberto 1, Gonnosnò.
Gonnosnò, a hill village in the Marmilla
Gonnosnò belongs to the Marmilla, an area of gentle hills and farmland in the interior of central-western Sardinia, in the province of Oristano. The village lies at around 200 metres, with low houses, courtyards and quiet streets; the climate is mild, climate zone C, with short winters. For the hospital, secondary schools and most jobs, people drive to the larger towns of the province and to Oristano.
The housing market consists almost entirely of detached homes, often traditional houses built around an inner courtyard, in stone or brick, and extended over time. Before buying, have damp, the roof and the services checked, and compare the house as it is with the plans on file. The report measures the distance from the exact location of the home to shops, pharmacies and schools.
The population is shrinking: 676 residents in 2023, 15.5% fewer than the 800 of 2011. The estimated average age is 52.3, against 49.8 in the province of Oristano, and over-65s are 34.0% against 29.5%. Foreign residents are few, 1.3%. Average declared income is slightly below the provincial level.
Seismic hazard is in the lowest category: every one of the province's 87 municipalities is in zone 4 of the Civil Protection classification, and expected acceleration is about 0.050 g. In an older house, the likeliest costs are routine maintenance and energy efficiency. For flooding and landslides, which depend on the position relative to streams and slopes, the report checks the official maps for the address.
The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps for Gonnosnò: from the address the report reaches the land parcel and the building.
Key points
- Hill village in the Marmilla, province of Oristano.
- 676 residents, down 15.5% since 2011.
- Seismic zone 4 in all 87 municipalities of the province.
- Over-65s at 34.0%, against 29.5% in the province.
Overview
Gonnosnò is a municipality in the province of Oristano, in Sardegna. At the end of 2023 it had 676 residents, ranked 48 of 87 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Gonnosnò is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. All 87 municipalities in the province are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.050 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.
In zone 4 the risk is low, but for an older building it is still worth asking about the state of the structure.
Population
Compared with the 2011 census, the resident population has fallen by 15.5%. The estimated average age is 52 years, higher than the province average (50). 34% of residents are over 65 (the regional figure is 27%). Foreign residents make up 1.3% of the population. On average, a household has 2.1 members.
Income and climate
In tax year 2024, taxpayers in Gonnosnò declared an average taxable income of 18,797 euros, in line with the province (19,764 euros). The Italian average is 24,895 euros.
Gonnosnò is in climate zone C, with 1,205 heating degree days: heating may be switched on from 15 November to 31 March, for up to 10 hours a day. The same table puts the town hall at 195 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Gonnosnò has 1 school and 1 pharmacy. The Overture Maps data also lists 1 grocery shop.
The data shows no healthcare facilities within the municipality, against a provincial average of 0.6 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 3.5% of the land in Gonnosnò, compared with 3.4% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Gonnosnò is one of the municipalities designated as a radon priority area by the Regione Sardegna in 2022. 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.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Gonnosnò: 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 Gonnosnò 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 3 inhabited census areas in Gonnosnò. Half of the residents live in areas scoring 72 or more.
Residents by band
- fair 11.9%
- good 88.1%
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
- 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 Sardegna, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2022.
- 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 115026. The text on this page is generated automatically from the data.