San Donato Val di Comino: 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 Donato Val di Comino
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 Napoli 1, San Donato Val di Comino.
San Donato Val di Comino, below the Abruzzo National Park
San Donato Val di Comino sits on the slope that closes off the Valle di Comino, in the eastern part of the province of Frosinone, at about 700 metres. Behind it rise the mountains of the Abruzzo, Lazio and Molise National Park; in front opens the valley with its villages. Sora is the nearest town for services and work, while Cassino and the A1 motorway are further south.
It is a mountain village that is losing people. There are 1,860 residents in 2023, down 12.3% since 2011. The average age is 49.3, against 46.8 in the province, and over-65s are 29.1%. Foreign residents are 4.2%.
The market offers stone houses in the old centre, often on several levels and needing renovation, and some detached homes lower down. Prices are modest and declared incomes slightly below the provincial average. The climate is zone E, with cold winters and some snow: insulation and heating weigh on costs.
The Valle di Comino has high seismic hazard. San Donato is in zone 1, the highest class on the Civil Protection scale, with an expected acceleration of 0.260 g; in the province of Frosinone, 30 municipalities are in zone 1. For a masonry house, the first check is the structure: ask for records of past work, how walls and floors are tied together and the state of the roof.
On the slopes gradient matters, and the report reads the official landslide maps for the address, starting from the Revenue Agency (Agenzia delle Entrate) cadastral maps.
Key points
- Valle di Comino, at about 700 metres below the Abruzzo National Park.
- Population down 12.3% since 2011, over-65s at 29.1%.
- Seismic zone 1, the highest, acceleration 0.260 g.
- Stone houses to renovate: check the structure first.
Overview
San Donato Val di Comino is a municipality in the province of Frosinone, in Lazio. At the end of 2023 it had 1,860 residents, ranked 55 of 91 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, San Donato Val di Comino is in seismic zone 1, the highest-risk zone, where very strong earthquakes are possible. Only 30 of 91 municipalities in the province are in zone 1.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.260 g, a high value: the level with a 10% probability of being exceeded in 50 years, on rock.
For anyone buying in San Donato Val di Comino, 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 12.3%. The estimated average age is 49 years, higher than the province average (47). 29% of residents are over 65 (the regional figure is 23%). Foreign residents make up 4.2% of the population. On average, a household has 2.0 members.
Income and climate
In tax year 2024, taxpayers in San Donato Val di Comino declared an average taxable income of 20,432 euros, below the provincial average (21,514 euros). The Italian average is 24,895 euros.
San Donato Val di Comino is in climate zone E, with 2,333 heating degree days: heating may be switched on from 15 October to 15 April, for up to 14 hours a day. The same table puts the town hall at 700 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, San Donato Val di Comino has 3 schools and 1 pharmacy. The Overture Maps data also lists 1 grocery shop, 2 sports facilities and 1 green area.
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 3.1% of the land in San Donato Val di Comino, 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 Donato Val di Comino. 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 Donato Val di Comino: 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 Donato Val di Comino 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 Donato Val di Comino. Half of the residents live in areas scoring 58 or more.
Residents by band
- modest 1.8%
- fair 98.2%
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 060062. The text on this page is generated automatically from the data.