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Castelliri: what to know before buying a home

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

Liveability index free for any address

Search for an address in Castelliri

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, Castelliri.

Castelliri, in the hills of the Liri valley

The name gives it away: Castelliri stands above the Liri valley in eastern Ciociaria, the hill country of Frosinone province, a short distance from Isola del Liri and Sora. The village spreads over a hill, with the town hall at around 260 metres, and its outlying districts run down towards the valley floor, where the main roads, workshops and services are.

The market is mostly single-family houses and detached homes with land, plus the houses of the old centre, which are often smaller and reached by steps. For work many people look to the towns of the valley and to Frosinone. In the low-lying areas near the river and ditches, and on the steeper slopes, the report checks the official flood and landslide maps for the exact address.

Istat, the national statistics office, counted 3,176 residents in 2023, down 10.1% since 2011, a marked fall for a village that is still close to larger towns. The average age is 47.1, similar to the provincial 46.8, and foreign nationals make up 3.1%. Average incomes are a little below the provincial figure.

The Liri valley is an active seismic area. Castelliri is in zone 2 of the Civil Protection classification, with an expected ground acceleration of 0.214 g. Before buying, ask when the building was put up and whether it has had structural work; in older houses a surveyor can assess the walls and floors before completion. The climate zone is D.

Key points

  • Above the Liri valley, near Isola del Liri and Sora.
  • 3,176 residents, down 10.1% since 2011.
  • Single-family homes with land and a hilltop old centre.
  • Seismic zone 2, acceleration 0.214 g.

Overview

Castelliri is a municipality in the province of Frosinone, in Lazio. At the end of 2023 it had 3,176 residents, ranked 33 of 91 municipalities in the province.

Earthquakes

For Italy's Civil Protection Department, Castelliri is in seismic zone 2, a zone where strong earthquakes are possible. The region uses a finer breakdown: here the classification is 2A. 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 0.214 g, a medium-high value: the level with a 10% probability of being exceeded in 50 years, on rock.

For anyone buying in Castelliri, 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 10.1%. The estimated average age is 47 years, in line with the province. 27% of residents are over 65 (the regional figure is 23%). Foreign residents make up 3.1% of the population. On average, a household has 2.5 members.

Income and climate

In tax year 2024, taxpayers in Castelliri declared an average taxable income of 20,267 euros, below the provincial average (21,514 euros). The Italian average is 24,895 euros.

Castelliri is in climate zone D, with 2,080 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 261 metres above sea level.

Services

In the official Ministry of Education and Ministry of Health lists, Castelliri has 4 schools and 1 pharmacy. The Overture Maps data also lists 1 grocery shop, 1 healthcare facility and 2 sports facilities.

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 9.5% of the land in Castelliri, 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

Official databases list 2 contaminated sites, or sites still under investigation, in Castelliri. 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 Castelliri: 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 Castelliri 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 33 inhabited census areas in Castelliri. Half of the residents live in areas scoring 61 or more.

Residents by band

  • modest 6.5%
  • fair 52.8%
  • good 40.7%

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 060020. The text on this page is generated automatically from the data.