Altstätten
Municipality in the canton of St. Gallen · FSO no. 3251
Parcel data from Nov 2026, statistics computed on 29 Oct 2026.
Open map at the Altstätten centerThe parcel data lists 6’326 parcels in Altstätten, covering 39.5 km². 61.9% of them have at least one registered building. The median parcel measures 1’043 m².
Key figures
- Parcels
- 6’326
- 3.3% of the canton
- Total area
- 39.5 km²
- 2% of the canton
- Median area
- 1’043 m²
- Canton: 950 m²
- Switzerland: 881 m²
- Built share
- 61.9%
- Canton: 66.4%
- Switzerland: 51%
- Median year built
- 1975
- Canton: 1977
- Switzerland: 1975
About Altstätten
Altstätten ranks 2nd of 75 municipalities in the canton of St. Gallen by number of parcels and holds 3.3% of the canton's parcels on 2% of its area. The median parcel in Altstätten measures 1’043 m², about the same as the canton median of 950 m². Altstätten is about as built-up as the canton as a whole: 61.9% of its parcels have a building, against 66.4% across the canton.
The zones with the most parcels are BauG Landwirtschaftszone (32.1%), BauG Wohnzone WE (12.5%) and BauG Wohnzone W2 (12.5%). In total, Altstätten uses 24 zone designations.
According to the building register, Altstätten has 5’868 buildings with 6’703 dwellings, 1.1 dwellings per building on average. Most residential buildings are single-family houses (77.2%). Non-residential buildings account for 40.1% of all buildings.
Built parcels most often have their newest building from before 1920 (23.1% of them), and 20.9% have one from 2001 or later. The median year built, 1975, is close to that of the canton as a whole (1977).
Built and unbuilt parcels
Built: 3’918 (61.9%)
Unbuilt: 2’408 (38.1%)
Parcels by zone
| Zone | Parcels | Area | Built |
|---|---|---|---|
| BauG_Landwirtschaftszone | 2’031 | 26.75 km² | 41.9% |
| BauG_Wohnzone WE | 791 | 0.70 km² | 86.9% |
| BauG_Wohnzone W2 | 788 | 0.49 km² | 92.4% |
| Hinweis.Wald | 335 | 5.76 km² | 9.9% |
| BauG_Wohn-Gewerbezone WG3 | 321 | 0.38 km² | 84.4% |
| BauG_Kernzone K3 | 287 | 0.15 km² | 95.8% |
| BauG_Wohn-Gewerbezone WG2 | 269 | 0.22 km² | 90.7% |
| BauG_Kernzone K2 | 256 | 0.11 km² | 91.0% |
| Hinweis.Verkehrsflaeche iB | 240 | 0.39 km² | 2.1% |
| Hinweis.Verkehrsflaeche aB | 208 | 0.82 km² | 3.4% |
| BauG_Kernzone | 170 | 0.03 km² | 93.5% |
| Arbeitszone 16 | 118 | 0.49 km² | 84.7% |
| Other zones (12 labels) | 512 | 3.16 km² | 63.7% |
Zone names are the municipal designations. A canton lists each wording separately.
Building stock
The building register lists 5’868 buildings with 6’703 dwellings here; 2’468 of them are single-family houses.
- Buildings
- 5’868
- Dwellings
- 6’703
- Single-family houses
- 2’468
- Building volume
- 9.2 million m³
Buildings by category
Construction periods
Built parcels by construction period of their newest building
Maps and geodata for Altstätten
geopool works as a GIS and geoportal for Altstätten. 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 St. Gallen
- Eschenbach (SG)4’620 parcels
- Gossau (SG)4’448 parcels
- Grabs4’539 parcels
- Kirchberg (SG)4’390 parcels
- Mels4’672 parcels
- Neckertal4’826 parcels
- Oberriet (SG)6’114 parcels
- Rapperswil-Jona5’681 parcels
- St. Gallen11’898 parcels
- Uzwil4’006 parcels
- Wil (SG)5’496 parcels
- Wildhaus-Alt St. Johann4’500 parcels