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Altstätten

Municipality in the canton of St. Gallen · FSO no. 3251

Parcel data from Jul 2025, statistics computed on 26 Sept 2026.

Open map at the Altstätten center

The 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

2.1% of the canton

Median area
1’043 m²

Canton: 938 m²

Switzerland: 870 m²

Built share
61.9%

Canton: 66.6%

Switzerland: 52%

Median year built
1975

Canton: 1977

Switzerland: 1976

About Altstätten

Altstätten is a municipality in the canton of St. Gallen and holds 3.3% of the canton's parcels in the data, on 2.1% of their area. The median parcel in Altstätten measures 1’043 m², about the same as the canton median of 938 m². Altstätten is about as built-up as the canton as a whole: 61.9% of its parcels have a building, against 66.6% 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 5’871 buildings with 6’711 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

Parcels by zone, the 12 largest zones first
ZoneParcels
BauG_Landwirtschaftszone2’03126.75 km²41.9%
BauG_Wohnzone WE7910.70 km²86.9%
BauG_Wohnzone W27880.49 km²92.4%
Hinweis.Wald3355.76 km²9.9%
BauG_Wohn-Gewerbezone WG33210.38 km²84.4%
BauG_Kernzone K32870.15 km²95.8%
BauG_Wohn-Gewerbezone WG22690.22 km²90.7%
BauG_Kernzone K22560.11 km²91.0%
Hinweis.Verkehrsflaeche iB2400.39 km²2.1%
Hinweis.Verkehrsflaeche aB2080.82 km²3.4%
BauG_Kernzone1700.03 km²93.5%
Arbeitszone 161180.49 km²84.7%
Other zones (12 labels)5123.16 km²63.7%

Zone names are the municipal designations. A canton lists each wording separately.

Building stock

The building register lists 5’871 buildings with 6’711 dwellings here; 2’470 of them are single-family houses.

Buildings
5’871
Dwellings
6’711
Single-family houses
2’470
Building volume
9.2 million m³

Buildings by category

  • Residential3’198
  • Mixed use184
  • Non-residential2’356
  • Other133

Construction periods

Built parcels by construction period of their newest building
  • Before 1920906
  • 1920-1945152
  • 1946-1960296
  • 1961-1980749
  • 1981-2000879
  • 2001-2010440
  • 2011-2020265
  • 2021 and later114
  • Unknown year117

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.

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