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Arlena di Castro: what to know before buying a home

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

Liveability index free for any address

Search for an address in Arlena di Castro

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 Roma 1, Arlena di Castro.

Arlena di Castro, Tuscia farmland between Viterbo and the sea

The name recalls the Duchy of Castro, the Farnese family's small state that was wiped out in the mid seventeenth century along with its capital, and Arlena was part of it. Today it is a small farming village in the Tuscia, the countryside around Viterbo, inland between the city and the Maremma coast, at around 260 metres and surrounded by cereal fields, olive groves and pasture.

Daily life is that of a country village: a few shops, essential services and a car for secondary schools, the hospital and work, which are in the larger towns of the province. Buyers will find masonry village houses, often built of tuff (the local volcanic stone), and farmhouses in the countryside. The climate is zone D, with hot summers and fairly mild winters.

According to Istat, the national statistics office, there were 820 residents in 2023, down 7.4% on 2011. The village is older than the province: an average age of 50.2 against 47.5, and over-65s at 34.5% against 25.9%. Foreign residents account for 13.4%. Declared incomes are below the average for the province of Viterbo.

On the Civil Protection seismic scale Arlena is in zone 2, like 40 of the 60 municipalities in the province, with the other 20 in zone 3; expected ground acceleration is about 0.138 g. For tuff houses in the centre, ask whether any consolidation work has been done and what state the roof and floors are in.

At the edges of the plateaus and along gullies the ground can be unstable, so the report checks the official landslide and flood maps for the address. The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps here, and the report finds the land parcel from the address.

Key points

  • Tuscia farming village, once part of the Duchy of Castro.
  • Over-65s at 34.5%, against 25.9% in the province.
  • Seismic zone 2, expected acceleration about 0.138 g.
  • Tuff houses: ask about consolidation, roof and floors.

Overview

Arlena di Castro is a municipality in the province of Viterbo, in Lazio. At the end of 2023 it had 820 residents, among the smallest in the province (57 of 60).

Earthquakes

For Italy's Civil Protection Department, Arlena di Castro 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 (40 of 60) are in the same zone.

In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.138 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.

For anyone buying in Arlena di Castro, 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 7.4%. The estimated average age is 50 years, higher than the province average (48). 35% of residents are over 65 (the regional figure is 23%). Foreign residents make up 13.4% of the population. On average, a household has 2.2 members.

Income and climate

In tax year 2024, taxpayers in Arlena di Castro declared an average taxable income of 19,104 euros, below the provincial average (22,031 euros). The Italian average is 24,895 euros.

Arlena di Castro is in climate zone D, with 1,883 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 260 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Arlena di Castro has 1 school and 1 pharmacy. The Overture Maps data also lists 1 grocery shop and 2 sports facilities.

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 5.1% of the land in Arlena di Castro, compared with 4.7% in the province and 8.2% in the region. In 2024 built-up land grew by 16.4 hectares.

Radon and contaminated sites

Official databases list no contaminated sites in Arlena di Castro.

Landslides and flooding

Landslide and flood hazard changes from one street to the next even within Arlena di Castro: 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 Arlena di Castro 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 6 inhabited census areas in Arlena di Castro. Half of the residents live in areas scoring 60 or more.

Residents by band

  • fair 99.8%
  • good 0.2%

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

ISTAT code 056002. The text on this page is generated automatically from the data.