Mollia: what to know before buying a home
A municipality in the province of Vercelli, Piemonte. Official data on earthquakes, population, services and transport.
Liveability index free for any address
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Search for an address in Mollia
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: Frazione Grampa 1, Mollia.
Mollia, houses on the Sesia in the upper Valsesia
In the upper Valsesia the river Sesia runs tight between wooded slopes, and Mollia lies right along it, at around eight hundred and eighty metres, with its hamlets spread along the river and up the hillsides. Further up, the valley continues towards Monte Rosa; heading down, you reach the towns of the middle valley, where most services are.
House hunters here will mostly find stone and timber buildings, many of them used as summer homes. The main checks are winter access, the state of the stone-slab roofs, damp and the heating system, since this is climate zone F. For a house near the river, it is also worth looking carefully at how high it stands above the riverbed.
The population figures are those of a very small village: 98 residents in 2023, 5.8% fewer than the 104 of 2011. The estimated average age is 52.6, over-65s make up 29.6% (against 28.0% in the province of Vercelli) and foreign residents 9.2%. Declared incomes are below the provincial average.
Seismic hazard is low. Mollia is in zone 4, on the scale set by the Civil Protection Department, as are 81 of the 82 municipalities in the province, with an expected ground acceleration of about 0.057 g. The upkeep of stone structures and the way the roof is fixed matter more.
River and slopes, on the other hand, are the issue to check at the address. The report reads the official flood and landslide maps for the exact spot and, using the Revenue Agency (Agenzia delle Entrate) cadastral maps, finds the land parcel.
Key points
- Village along the Sesia, in the upper Valsesia.
- 98 residents in 2023, down 5.8% since 2011.
- Seismic zone 4, expected acceleration about 0.057 g.
- Houses near the river: check flood maps by address.
Overview
Mollia is a municipality in the province of Vercelli, in Piemonte. At the end of 2023 it had 98 residents, among the smallest in the province (77 of 82).
Earthquakes
For Italy's Civil Protection Department, Mollia is in seismic zone 4, the lowest-risk zone, where strong earthquakes are very rare. Most municipalities in the province (81 of 82) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.057 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 5.8%. The estimated average age is 53 years, higher than the province average (48). 30% of residents are over 65 (the regional figure is 27%). Foreign residents make up 9.2% of the population. On average, a household has 1.4 members.
Income and climate
In tax year 2024, taxpayers in Mollia declared an average taxable income of 22,425 euros, below the provincial average (24,991 euros). The Italian average is 24,895 euros.
Mollia is in climate zone F, with 3,448 heating degree days, with no limits on when heating may be used. The same table puts the town hall at 880 metres above sea level.
Services
The data shows no schools within the municipality, against a provincial average of 1.1 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 0.8% of the land in Mollia, compared with 5.0% in the province and 6.7% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Mollia is not among the radon priority areas designated by the Regione Piemonte in 2023. 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 Mollia.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Mollia: 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 Mollia 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 11 inhabited census areas in Mollia. Half of the residents live in areas scoring 47 or more.
Residents by band
- modest 67.7%
- fair 32.3%
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 Piemonte, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2023.
- Contaminated sites, Regione Piemonte, Anagrafe regionale dei siti contaminati (ASCO). Licence CC BY 4.0, updated to 9 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 002078. The text on this page is generated automatically from the data.