Oriolo Romano: what to know before buying a home
A municipality in the province of Viterbo, Lazio. Official data on earthquakes, population, services and transport.
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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 Borgo Garibaldi 1, Oriolo Romano.
Oriolo Romano, a planned Renaissance village and its beech wood
Oriolo Romano has an unusual history for a village: the centre was laid out in the sixteenth century by the Santacroce family, with a regular street plan around their palace, which later passed to the Altieri family. Inside the palace is a gallery with portraits of every pope. Just outside the village is the Monte Raschio beech wood, a forest growing at unusually low altitude and part of the UNESCO site of the ancient beech forests of Europe.
If you work in Rome, the location matters. Oriolo has a station on the Rome to Viterbo railway, the line through Bracciano, and Lake Bracciano is a few minutes' drive away. Around the historic centre the village has grown with detached houses and homes with gardens, within reasonable reach of the capital, but check the train timetable before relying on it every day.
The population is holding steady: 3,699 residents in 2023, up 1.4% on 2011 according to Istat, the national statistics office. The average age of 47.4 is in line with the province of Viterbo and foreign residents make up 7.4%. Declared incomes are slightly above the provincial average. For a place this size there are 4 school sites, 1.08 per 1,000 residents against 0.91 in the province.
The seismic hazard is moderate. Oriolo is in zone 3 of the Civil Protection classification (the national emergency agency), while 40 municipalities in the province are in zone 2, and the expected ground acceleration in the built-up area is about 0.077 g. In the historic centre the houses are several centuries old, with walls of tuff or stone, so check the roof, damp and past alterations. For the woods and gullies around the village, the report checks the official landslide and flood maps for the address.
Key points
- Sixteenth-century planned village with Palazzo Altieri and its gallery of popes.
- Station on the Rome to Viterbo railway, Lake Bracciano nearby.
- 3,699 residents, up 1.4% since 2011.
- Seismic zone 3, expected acceleration about 0.077 g.
Overview
Oriolo Romano is a municipality in the province of Viterbo, in Lazio. At the end of 2023 it had 3,699 residents, ranked 23 of 60 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Oriolo Romano is in seismic zone 3, a zone where strong earthquakes are possible but rare. The region uses a finer breakdown: here the classification is 3B. Only 20 of 60 municipalities in the province are in zone 3.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.077 g, a moderate value: the level with a 10% probability of being exceeded in 50 years, on rock.
Even in zone 3, seismic standards apply to new buildings: for an older building, ask about the design year and any structural work.
Population
Compared with the 2011 census, the resident population has grown by 1.4%. The estimated average age is 47 years, in line with the province. 25% of residents are over 65 (the regional figure is 23%). Foreign residents make up 7.4% of the population. On average, a household has 2.2 members.
Income and climate
In tax year 2024, taxpayers in Oriolo Romano declared an average taxable income of 22,342 euros, in line with the province (22,031 euros). The Italian average is 24,895 euros.
Oriolo Romano is in climate zone E, with 2,166 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 420 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Oriolo Romano has 4 schools and 1 pharmacy. The Overture Maps data also lists 3 grocery shops and supermarkets, 1 healthcare facility, 2 sports facilities and 2 parks and green areas.
There are 0.3 healthcare facilities per 1,000 residents, fewer than the province average (0.5).
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 6.3% of the land in Oriolo Romano, compared with 4.7% 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 very high. 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 open contaminated sites in Oriolo Romano; one has been cleaned up or closed.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Oriolo Romano: 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 Oriolo Romano 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 23 inhabited census areas in Oriolo Romano. Half of the residents live in areas scoring 66 or more.
Residents by band
- modest 0.2%
- fair 28.2%
- good 71.5%
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 056041. The text on this page is generated automatically from the data.