San Giovanni Incarico: what to know before buying a home
A municipality in the province of Frosinone, Lazio. Official data on earthquakes, population, services and transport.
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Search for an address in San Giovanni Incarico
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 Civita Farnese Centro 1, San Giovanni Incarico.
San Giovanni Incarico, the Liri valley in southern Ciociaria
San Giovanni Incarico is a municipality in the southern part of the province of Frosinone, in the valley of the Liri, the river that crosses the Ciociaria area before becoming the Garigliano. The town hall is at around 200 metres, and the territory mixes hills planted with olives, flat land near the river and scattered clusters of houses.
The main reference points for buyers are the towns of the valley and Frosinone, reached by car; the A1 motorway runs through the valley not far away. You mainly find detached houses with land, village houses and some newer villas. In the low-lying areas near the Liri and the ditches draining into it, the report checks the official flood maps for the address, which are worth reading before choosing.
The population is ageing and shrinking: 3,055 residents in 2023, 10.4% fewer than in 2011, with a mean age of 49.4 against 46.8 for the province and over-65s at 30.2%. Foreign residents are 5.2%. Declared incomes are in line with the provincial average.
Earthquake risk needs to be taken seriously. San Giovanni Incarico is in seismic zone 2 of the Civil Protection classification, like 58 other municipalities in the province of Frosinone, where almost all are in zone 1 or 2. The expected ground acceleration in the town is 0.153 g. For an old masonry house, ask about any work on load-bearing walls and the roof; for a newer one, the design year and the standards applied. The Revenue Agency cadastral maps are published, and the report traces the land parcel from the address.
Key points
- Liri valley, in the south of the province of Frosinone.
- Near the river, check the flood maps.
- 3,055 residents, over-65s at 30.2%.
- Seismic zone 2, expected acceleration 0.153 g.
Overview
San Giovanni Incarico is a municipality in the province of Frosinone, in Lazio. At the end of 2023 it had 3,055 residents, ranked 36 of 91 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, San Giovanni Incarico is in seismic zone 2, a zone where strong earthquakes are possible. The region uses a finer breakdown: here the classification is 2B. Most municipalities in the province (59 of 91) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.153 g, a medium-high value: the level with a 10% probability of being exceeded in 50 years, on rock.
For anyone buying in San Giovanni Incarico, 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 10.4%. The estimated average age is 49 years, higher than the province average (47). 30% of residents are over 65 (the regional figure is 23%). Foreign residents make up 5.2% of the population. On average, a household has 2.3 members.
Income and climate
In tax year 2024, taxpayers in San Giovanni Incarico declared an average taxable income of 21,432 euros, in line with the province (21,514 euros). The Italian average is 24,895 euros.
San Giovanni Incarico is in climate zone D, with 1,499 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 200 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, San Giovanni Incarico has 4 schools and 1 pharmacy. The Overture Maps data also lists 1 grocery shop, 1 healthcare facility and 1 green area.
There are 0.3 grocery shops and supermarkets per 1,000 residents, fewer than the province average (0.7).
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 6.1% of the land in San Giovanni Incarico, compared with 6.9% 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 San Giovanni Incarico. 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 San Giovanni Incarico: 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 San Giovanni Incarico 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 26 inhabited census areas in San Giovanni Incarico. Half of the residents live in areas scoring 64 or more.
Residents by band
- fair 66.2%
- good 33.8%
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.
- 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 060064. The text on this page is generated automatically from the data.