Thônex
Municipality in the canton of Geneva · FSO no. 6640
Parcel data from Nov 2026, statistics computed on 29 Oct 2026.
Open map at the Thônex centerThe parcel data lists 2’516 parcels in Thônex, covering 3.8 km². 70.5% of them have at least one registered building. The median parcel measures 648 m².
Key figures
- Parcels
- 2’516
- 3.5% of the canton
- Total area
- 3.8 km²
- 1.4% of the canton
- Median area
- 648 m²
- Canton: 895 m²
- Switzerland: 881 m²
- Built share
- 70.5%
- Canton: 57.6%
- Switzerland: 51%
- Median year built
- 1988
- Canton: 1983
- Switzerland: 1975
About Thônex
Thônex ranks 8th of 45 municipalities in the canton of Geneva by number of parcels and holds 3.5% of the canton's parcels on 1.4% of its area. The median parcel in Thônex measures 648 m², smaller than the canton median of 895 m². Thônex is more built-up than the canton as a whole: 70.5% of its parcels have a building, against 57.6% across the canton.
The zones with the most parcels are Zone de développement 5 (73.1%) and Zone de développement 3 (15.9%). In total, Thônex uses 10 zone designations.
According to the building register, Thônex has 3’203 buildings with 7’640 dwellings, 2.4 dwellings per building on average. Most residential buildings are single-family houses (77.9%). Non-residential buildings account for 41.7% of all buildings.
Built parcels most often have their newest building from 1981 to 2000 (28.5% of them), and 34.8% have one from 2001 or later. The median year built, 1988, is close to that of the canton as a whole (1983).
Built and unbuilt parcels
Built: 1’773 (70.5%)
Unbuilt: 743 (29.5%)
Parcels by zone
| Zone | Parcels | Area | Built |
|---|---|---|---|
| Zone de développement 5 | 1’838 | 2.06 km² | 78.6% |
| Zone de développement 3 | 401 | 0.99 km² | 56.1% |
| Zone agricole | 122 | 0.46 km² | 18.0% |
| Zone de développement 4B protégée | 104 | 0.14 km² | 58.7% |
| Zone de développement industriel et artisanal | 29 | 0.04 km² | 55.2% |
| Zone de verdure | 11 | 0.06 km² | 36.4% |
| Zone ferroviaire | 4 | 0.01 km² | 0.0% |
| Zone des bois et forêts | 3 | < 0.01 km² | 0.0% |
| Zone des eaux et des rives | 2 | 0.01 km² | 0.0% |
| Zone sportive | 2 | 0.05 km² | 50.0% |
Zone names are the municipal designations. A canton lists each wording separately.
Building stock
The building register lists 3’203 buildings with 7’640 dwellings here; 1’429 of them are single-family houses.
- Buildings
- 3’203
- Dwellings
- 7’640
- Single-family houses
- 1’429
- Building volume
- 4.4 million m³
Buildings by category
Construction periods
Built parcels by construction period of their newest building
Maps and geodata for Thônex
geopool works as a GIS and geoportal for Thônex. Its parcel map shows the parcels of the official cadastral survey with their area, their zone from the municipal zoning plan and their buildings, on swisstopo maps. Building zones, the property map and the geodata of each parcel open on the geopool map. The ÖREB extract of a parcel (public-law restrictions on landownership) is in lookup.
More municipalities in the canton of Geneva
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