Terzo d'Aquileia: what to know before buying a home
A municipality in the province of Udine, Friuli-Venezia Giulia. Official data on earthquakes, population, services and transport.
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Search for an address in Terzo d'Aquileia
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 2 Giugno 2, Terzo d'Aquileia.
Terzo d'Aquileia, between Aquileia and the Grado lagoon
Terzo d'Aquileia lies in the Friulian lowlands, a few kilometres from Aquileia and its archaeological site, on the road down towards the lagoon and Grado. The land is flat, almost at sea level, with fields, vineyards and reclamation canals; the village is small, with low houses and a few farm courtyards, plus one hamlet separate from the main village.
For buyers, the main draw is the position between the Aquileia countryside and the sea at Grado. Homes are mostly detached or semi-detached, with gardens. Cervignano del Friuli, just to the north, is the reference for the railway station, secondary schools and shops; Udine and Trieste are within driving distance. It is climate zone E, with damp winters.
According to Istat, Italy's national statistics office, there are 2,708 residents (2023), down 6.0% since 2011. The average age of 48.0 is slightly below the figure for the province of Udine (48.5), and 26.6% of residents are over 65. Foreign nationals make up 4.9%.
The municipality is in seismic zone 3, like 44 of the 134 municipalities in the province, with an expected ground acceleration of 0.109 g. In Friuli, values increase towards the north and here they are among the lowest. For an older house it is still worth asking about the foundations on such low ground.
This area uses the land register system (catasto tavolare) inherited from Austrian rule: ownership is checked in the Libro fondiario, the land book, while the Revenue Agency's cadastral maps are still available. On reclaimed land, the report also checks the official flood maps for the address.
Key points
- Friulian lowlands between Aquileia and the Grado lagoon
- 2,708 residents, down 6.0% since 2011
- Seismic zone 3, expected acceleration 0.109 g
- Land register system: ownership checked in the Libro fondiario
Overview
Terzo d'Aquileia is a municipality in the province of Udine, in Friuli-Venezia Giulia. At the end of 2023 it had 2,708 residents, ranked 52 of 134 municipalities in the province.
Earthquakes
For Italy's Civil Protection Department, Terzo d'Aquileia is in seismic zone 3, a zone where strong earthquakes are possible but rare. Only 44 of 134 municipalities in the province are in zone 3.
In the built-up area, the expected ground shaking (peak ground acceleration, PGA) is about 0.109 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 6.0%. The estimated average age is 48 years, in line with the province. 27% of residents are over 65 (the regional figure is 27%). Foreign residents make up 4.9% of the population. On average, a household has 2.2 members.
Income and climate
In tax year 2024, taxpayers in Terzo d'Aquileia declared an average taxable income of 23,535 euros, below the provincial average (25,508 euros). The Italian average is 24,895 euros.
Terzo d'Aquileia is in climate zone E, with 2,244 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 5 metres above sea level.
Services
In the official Ministry of Education and Ministry of Health lists, Terzo d'Aquileia has 2 schools and 1 pharmacy. The Overture Maps data also lists 1 healthcare facility and 2 sports facilities.
The data shows no grocery shops and supermarkets within the municipality, against a provincial average of 0.6 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 Terzo d'Aquileia, compared with 6.8% in the province and 8.1% in the region. In 2024 built-up land stayed almost the same.
Radon and contaminated sites
Terzo d'Aquileia is not among the radon priority areas designated by the Regione Friuli Venezia Giulia in 2024. According to the ISPRA map, the estimated radon emission in the municipality is medium. 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 Terzo d'Aquileia.
Landslides and flooding
Landslide and flood hazard changes from one street to the next even within Terzo d'Aquileia: 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
Terzo d'Aquileia uses the tavolare (land book) system, but the Revenue Agency still publishes the maps: the report finds the building's parcel, that is its sheet and parcel number, starting from the address.
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 29 inhabited census areas in Terzo d'Aquileia. Half of the residents live in areas scoring 68 or more.
Residents by band
- fair 19.2%
- good 80.8%
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 Friuli Venezia Giulia, national list compiled by ARPA Lombardia. Licence Atto pubblico (art. 5 L. 633/1941), 2024.
- 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 030120. The text on this page is generated automatically from the data.