Onex
Municipality in the canton of Geneva · FSO no. 6631
Parcel data from Jul 2025, statistics computed on 29 Sept 2026.
For Onex (GE), the parcel data holds a measured building height for 1’222 parcels. On a typical parcel the tallest building is 8.5 m high, and on 19 in 20 parcels it is 30.8 m or lower.
Key figures
- Median building height
- 8.5 m
- Canton: 9.1 m
- Switzerland: 9.5 m
- Median floors
- 2
Canton: 2
Switzerland: 2
- Tallest building
- 59.2 m
Canton: 92.2 m
Switzerland: 221.3 m
- Parcels measured
- 1’222
2.8% of the canton
- 25 m or taller
- 131
10.7% of measured parcels
About Onex
Onex is a municipality in the canton of Geneva. For Onex, the parcel data holds a measured building height for 1’222 parcels. On half of them the tallest building is at most 8.5 m, on three quarters at most 11.2 m, and on 19 in 20 at most 30.8 m.
For Onex, the median building height, 8.5 m, is close to the canton median of 9.1 m. The tallest building measures 59.2 m. 73 parcels have a building of 30 m or taller.
The median floor count is 2, and the building with the most floors has 19. By median building height, Onex ranks 28th of 42 municipalities in the canton with complete height data.
Building heights
The height of the tallest building on each parcel, over the 1’222 parcels with a measured height. Each percentile is the height that share of parcels stays at or below.
| Figure | Here | Canton | Switzerland |
|---|---|---|---|
| P25 (lower quartile) | 7.3 m | 7.4 m | 7.8 m |
| P50 (median) | 8.5 m | 9.1 m | 9.5 m |
| P75 (upper quartile) | 11.2 m | 13.1 m | 11.5 m |
| P95 | 30.8 m | 27.6 m | 16.6 m |
| Tallest building | 59.2 m | 92.2 m | 221.3 m |
Parcels by building height
Floors
The number of floors of the building with the most floors on each parcel, over the 993 parcels with a floor count. Median: 2, most floors: 19.
Parcels by number of floors
Tallest buildings
Parcels whose tallest building reaches at least the height in each row. The rows are cumulative: a parcel with a 60 m building also counts in every row below 60 m. The tallest building measures 59.2 m.
| Tallest building | Parcels | Share of measured |
|---|---|---|
| 15 m or taller | 182 | 14.9% |
| 25 m or taller | 131 | 10.7% |
| 30 m or taller | 73 | 6% |
| 50 m or taller | 5 | 0.4% |
| 100 m or taller | 0 | 0% |
Building height map for Onex
roofs maps building height for every parcel in Onex. Heights come from swisstopo swissBUILDINGS3D and the number of floors from the federal building register (GWR); where no height was measured, the map estimates it from the floors and marks it with a ~.
Explore more data for Onex
- Parcel statistics and zones Onexin geopool
- Building zones and density Onexin room
- Building age Onexin roots
- OEREB extract Onexin lookup
- Solar potential Onexin soolar
- Points of interest and accessibility Onexin scoore
- Tax rates Onexin taxoo
More municipalities in the canton of Geneva
- Bernex1’506 parcels
- Carouge (GE)1’078 parcels
- Chêne-Bougeries1’750 parcels
- Collonge-Bellerive2’179 parcels
- Genève7’308 parcels
- Lancy1’792 parcels
- Meyrin1’483 parcels
- Plan-les-Ouates1’798 parcels
- Thônex1’789 parcels
- Vernier2’417 parcels
- Versoix1’395 parcels
- Veyrier2’266 parcels