Santa Marinella: what to know before buying a home
A municipality in the province of Roma, 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 Aurelia 10, Santa Marinella.
Santa Marinella and Santa Severa, Rome's northern coast
Santa Marinella is a long, narrow strip of Tyrrhenian coast between Civitavecchia and Cerveteri, backed by the hills of the Monti della Tolfa. The Via Aurelia, the railway to Pisa and the motorway all run parallel to the beach through the whole municipality. To the south is the village of Santa Severa, with its seafront castle built on the site of Pyrgi, the Etruscan port of Caere.
For decades this was where many Roman families spent their summers, and part of the housing is still lived in mainly in the warm months. Anyone buying to live here all year will find small villas and low-rise blocks near the sea and newer districts further inland. The stations at Santa Marinella and Santa Severa, on the FL5 regional line, connect with Rome, though journey times are worth testing yourself. In seafront houses, salt air and the state of façades and balcony ironwork matter; along the ditches running down from the hills flood hazard changes from street to street, and the report checks it for the address.
The population has grown: 18,446 residents in 2023, up 6.0% since 2011 according to Istat, the national statistics office. It is an older community, though, with an estimated average age of 48.6 against 46.0 in the metropolitan area and over-65s at 26.3%. Households are small, 1.92 people on average, as you would expect with an older population. Foreign nationals make up 9.1%. Sports facilities, parks and restaurants are more plentiful than the provincial average per resident, while declared incomes are below average.
The coast north of Rome is less exposed to earthquakes than inland Lazio. Santa Marinella is in zone 3 of the Civil Protection Department's classification, like 24 municipalities in the province, while 97 are in zone 2, and the expected ground acceleration in the built-up area is about 0.054 g, a low value. The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps here, so the report finds the land parcel from the address.
Key points
- Coast between Civitavecchia and Cerveteri, with Santa Severa castle.
- Many summer homes; households of 1.92 people on average.
- Residents up 6.0% since 2011, over-65s at 26.3%.
- Seismic zone 3, low expected ground acceleration (0.054 g).
Overview
Santa Marinella is a municipality in the province of Roma, in Lazio. At the end of 2023 it had 18,446 residents, ranked 27 of 121 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Santa Marinella 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 24 of 121 municipalities in the province are in zone 3.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.054 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 6.0%. The estimated average age is 49 years, higher than the province average (46). 26% of residents are over 65 (the regional figure is 23%). Foreign residents make up 9.1% of the population. On average, a household has 1.9 members.
Income and climate
In tax year 2024, taxpayers in Santa Marinella declared an average taxable income of 26,130 euros, below the provincial average (28,682 euros). The Italian average is 24,895 euros.
Santa Marinella is in climate zone C, with 1,264 heating degree days: heating may be switched on from 15 November to 31 March, for up to 10 hours a day. The same table puts the town hall at 7 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Santa Marinella has 10 schools and 6 pharmacies. The Overture Maps data also lists 14 grocery shops and supermarkets, 14 healthcare facilities, 34 sports facilities and 8 parks and green areas.
There are 0.8 grocery shops and supermarkets per 1,000 residents, more than the province average (0.4).
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 12.0% of the land in Santa Marinella, compared with 13.2% 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 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 2 contaminated sites, or sites still under investigation, in Santa Marinella, and one more has been cleaned up or closed. 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 Santa Marinella: 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 Santa Marinella 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 99 inhabited census areas in Santa Marinella. Half of the residents live in areas scoring 68 or more.
Residents by band
- modest 1.2%
- fair 35.9%
- good 49.3%
- very good 13.6%
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 058097. The text on this page is generated automatically from the data.