Monterotondo Marittimo: what to know before buying a home
A municipality in the province of Grosseto, Toscana. Official data on earthquakes, population, services and transport.
Liveability index free for any address
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Search for an address in Monterotondo Marittimo
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 Licurgo Bardelloni 0, Monterotondo Marittimo.
Monterotondo Marittimo, the Metal Hills and the Biancane
Despite the name, you cannot see the sea: Monterotondo Marittimo lies in inland Maremma, on the Colline Metallifere (the "Metal Hills") at the northern edge of the province of Grosseto. Geothermal activity shapes the area. In the Biancane nature park the ground is pale, almost white, and hot steam rises from the soil, a landscape explored along marked trails.
The village stands on a hill, with its stone-built old centre and newer houses on the slopes. Massa Marittima is the reference town for many services, and the coast at Follonica is a drive away. Winters (climate zone E) are colder than the name suggests.
In 2023 there were 1,278 residents, according to Istat, the national statistics office, down 9.6% since 2011. The average age is 46.6, lower than the 49.1 of the province, and over-65s are 27.5% against 29.0%. Foreign residents make up 26.8%. Declared incomes are below the provincial average.
Monterotondo is in seismic zone 3, like 16 of the 28 municipalities in the province of Grosseto; 10 are in zone 4, the lowest. The expected ground acceleration in the village is 0.121 g. In the stone houses of the centre, ask about work done on roofs, floors and walls.
The Revenue Agency (Agenzia delle Entrate) publishes cadastral maps, so the report traces the land parcel. Slope, landslides on hillsides and flooding along ditches are checked on the official maps for each address, together with distances to the nearest services.
Key points
- Village in the Colline Metallifere, home of the Biancane park.
- Foreign residents at 26.8%, average age 46.6.
- Seismic zone 3, like 16 municipalities in the province.
- Population down 9.6% since 2011.
Overview
Monterotondo Marittimo is a municipality in the province of Grosseto, in Toscana. At the end of 2023 it had 1,278 residents, ranked 24 of 28 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Monterotondo Marittimo is in seismic zone 3, a zone where strong earthquakes are possible but rare. Most municipalities in the province (16 of 28) are in the same zone.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.121 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 fallen by 9.6%. The estimated average age is 47 years, lower than the province average (49). 28% of residents are over 65 (the regional figure is 26%). Foreign residents make up 26.8% of the population. On average, a household has 2.3 members.
Income and climate
In tax year 2024, taxpayers in Monterotondo Marittimo declared an average taxable income of 20,639 euros, below the provincial average (22,706 euros). The Italian average is 24,895 euros.
Monterotondo Marittimo is in climate zone E, with 2,270 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 539 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Monterotondo Marittimo has 3 schools and 1 pharmacy. The Overture Maps data also lists 1 grocery shop and 5 parks and green areas.
The data shows no healthcare facilities within the municipality, against a provincial average of 0.8 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 2.0% of the land in Monterotondo Marittimo, compared with 3.2% in the province and 6.2% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Monterotondo Marittimo is not among the radon priority areas designated by the Regione Toscana in 2025. 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 no contaminated sites in Monterotondo Marittimo.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Monterotondo Marittimo: 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 Monterotondo Marittimo 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 30 inhabited census areas in Monterotondo Marittimo. Half of the residents live in areas scoring 69 or more.
Residents by band
- fair 27.7%
- good 72.3%
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 Toscana, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2025.
- 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 053027. The text on this page is generated automatically from the data.