Colli a Volturno: what to know before buying a home
A municipality in the province of Isernia, Molise. Official data on earthquakes, population, services and transport.
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Search for an address in Colli a Volturno
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 Valloni 1, Colli a Volturno.
Colli a Volturno, in the upper Volturno valley
The Volturno rises a little further north, below the Mainarde mountains, and in its Molise stretch it runs through a broad valley. At Colli a Volturno there is already a farmed valley floor, with villages on the first hills. The municipality is in the province of Isernia; the provincial capital is close by, and it is where people go for offices, the hospital and secondary schools.
When house hunting here, the key distinction is between the valley floor, easier for roads and close to the river, and the higher parts, where houses are older and streets narrower. They need different checks: lower down, look at the flood maps; on the slopes, look at gradient and landslide hazard, which the report reads for each individual address.
Colli a Volturno is younger than the provincial average. With 1,265 residents in 2023, down 8.5% since 2011 according to Istat (the national statistics office), it has an average age of 46.9 against 48.1 in the province, and over-65s make up 23.2% (27.6% around Isernia). Foreign residents are 3.8%. For such a small place there are plenty of cafés and restaurants: 13 in the Overture Maps data.
The seismic zone is 1, the highest in the Civil Protection classification, shared with 31 other municipalities in the province; the remaining 20 are in zone 2. Expected ground acceleration in the built-up area is 0.273 g. Before buying a stone building in the old centre, ask whether any seismic upgrading has been done and what paperwork proves it.
The Revenue Agency's cadastral maps cover the municipality, and the report traces the plot from the address, along with distances to schools, the pharmacy and shops.
Key points
- Valley floor and hillsides in the upper Volturno valley, near Isernia.
- Average age 46.9, against 48.1 in the province.
- Seismic zone 1, expected acceleration 0.273 g.
- 13 cafés and restaurants for 1,265 residents.
Overview
Colli a Volturno is a municipality in the province of Isernia, in Molise. At the end of 2023 it had 1,265 residents, ranked 14 of 52 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Colli a Volturno is in seismic zone 1, the highest-risk zone, where very strong earthquakes are possible. Most municipalities in the province (32 of 52) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.273 g, a high value: the level with a 10% probability of being exceeded in 50 years, on rock.
For anyone buying in Colli a Volturno, 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 8.5%. The estimated average age is 47 years, in line with the province. 23% of residents are over 65 (the regional figure is 27%). Foreign residents make up 3.8% of the population. On average, a household has 2.1 members.
Income and climate
In tax year 2024, taxpayers in Colli a Volturno declared an average taxable income of 19,915 euros, in line with the province (20,102 euros). The Italian average is 24,895 euros.
Colli a Volturno is in climate zone D, with 1,804 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 385 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Colli a Volturno has 3 schools and 1 pharmacy. The Overture Maps data also lists 2 grocery shops and supermarkets and 1 sports facility.
The data shows no healthcare facilities within the municipality, against a provincial average of 0.5 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 2.7% of the land in Colli a Volturno, compared with 3.4% in the province and 4.0% 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 low. Radon varies from building to building and can only be known by measuring it, especially on ground floors and in basements.
Official databases list no contaminated sites in Colli a Volturno.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Colli a Volturno: 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 Colli a Volturno 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 24 inhabited census areas in Colli a Volturno. Half of the residents live in areas scoring 60 or more.
Residents by band
- fair 100.0%
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 094017. The text on this page is generated automatically from the data.