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Sonnino: what to know before buying a home

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

Liveability index free for any address

Search for an address in Sonnino

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 Consolare 7, Sonnino.

Sonnino, a village in the Ausoni hills above the Pontine plain

Sonnino is a medieval village perched in the Ausoni hills, over four hundred metres up, its stone houses packed tightly along alleys and flights of steps. Its territory then runs down to the reclaimed Pontine plain, where vegetables are grown and many families live in houses scattered among the fields. In the nineteenth century the village was known for its brigands, a history that is still part of local identity.

Priverno and Terracina are the nearest towns, and Latina is about half an hour's drive. People working in Rome can take the train from Priverno-Fossanova station, on the line linking the capital with Naples via Formia.

Buyers face two different worlds. In the old village the houses are old, often need a full renovation, are reached on foot and are cheap; on the plain there are detached and country houses with land, easy by car but far from the services of the centre. In the village, check how materials and machinery would reach the house for any building work.

Istat, the national statistics institute, counted 7,367 residents in 2023, up 1.2% since 2011. The estimated average age, 45.2, is close to that of the province of Latina (45.5), over-65s make up 23.0% and foreign residents 8.0%. Average incomes are below the provincial figure.

The Civil Protection Department (Protezione Civile) places Sonnino in seismic zone 3, like almost every municipality in the province, with an expected ground acceleration in the built-up area of about 0.085 g. For a stone house in the village, have an engineer look at walls and floors, especially if you are planning a major renovation.

The Revenue Agency (Agenzia delle Entrate) publishes the cadastral maps and the report goes from the address to the plot. The limestone slopes around the village and the reclaimed plain raise different issues, landslides on one side and standing water on the other, and both are checked for the individual address.

Key points

  • Hill village in the Ausoni, with land running down to the plain.
  • 7,367 residents in 2023, up 1.2% since 2011.
  • Seismic zone 3, expected acceleration about 0.085 g.
  • Trains to Rome from Priverno-Fossanova station.

Overview

Sonnino is a municipality in the province of Latina, in Lazio. At the end of 2023 it had 7,367 residents, ranked 17 of 33 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Sonnino is in seismic zone 3, a zone where strong earthquakes are possible but rare. The region uses a finer breakdown: here the classification is 3B. Most municipalities in the province (30 of 33) are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.085 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 grown by 1.2%. The estimated average age is 45 years, in line with the province. 23% of residents are over 65 (the regional figure is 23%). Foreign residents make up 8.0% of the population. On average, a household has 2.4 members.

Income and climate

In tax year 2024, taxpayers in Sonnino declared an average taxable income of 17,794 euros, below the provincial average (21,502 euros). The Italian average is 24,895 euros.

Sonnino is in climate zone D, with 1,865 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 430 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Sonnino has 7 schools and 3 pharmacies. The Overture Maps data also lists 5 grocery shops and supermarkets, 2 healthcare facilities, 4 sports facilities and 2 parks and green areas.

There are 0.3 healthcare facilities per 1,000 residents, fewer 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 6.5% of the land in Sonnino, compared with 10.1% in the province and 8.2% in the region. In 2024 built-up land stayed almost the same.

Radon and contaminated sites

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 one contaminated site, or site still under investigation, in Sonnino. 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 Sonnino: 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 Sonnino 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 88 inhabited census areas in Sonnino. Half of the residents live in areas scoring 71 or more.

Residents by band

  • modest 0.1%
  • fair 23.9%
  • good 61.5%
  • very good 14.5%

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 059029. The text on this page is generated automatically from the data.