Altnau
Municipality in the canton of Thurgau · FSO no. 4641
Parcel data from Nov 2026, statistics computed on 29 Oct 2026.
Open map at the Altnau centerThe parcel data lists 1’292 parcels in Altnau, covering 6.7 km². 56.8% of them have at least one registered building. The median parcel measures 1’017 m².
Key figures
- Parcels
- 1’292
- 0.9% of the canton
- Total area
- 6.7 km²
- 0.8% of the canton
- Median area
- 1’017 m²
- Canton: 1’142 m²
- Switzerland: 881 m²
- Built share
- 56.8%
- Canton: 53.5%
- Switzerland: 51%
- Median year built
- 1991
- Canton: 1986
- Switzerland: 1975
About Altnau
Altnau ranks 49th of 80 municipalities in the canton of Thurgau by number of parcels and holds 0.9% of the canton's parcels on 0.8% of its area. The median parcel in Altnau measures 1’017 m², about the same as the canton median of 1’142 m². Altnau is about as built-up as the canton as a whole: 56.8% of its parcels have a building, against 53.5% across the canton.
The zones with the most parcels are Wohnzone zweigeschossig (29.6%), Landwirtschaftszone (16.7%) and Wohn- und Arbeitszone 2 (11.8%). In total, Altnau uses 23 zone designations.
According to the building register, Altnau has 1’125 buildings with 1’153 dwellings, 1.0 dwellings per building on average. Most residential buildings are single-family houses (76.3%). Non-residential buildings account for 37.6% of all buildings.
Built parcels most often have their newest building from 1981 to 2000 (34.7% of them), and 30.5% have one from 2001 or later. The median year built, 1991, is close to that of the canton as a whole (1986).
Built and unbuilt parcels
Built: 734 (56.8%)
Unbuilt: 558 (43.2%)
Parcels by zone
| Zone | Parcels | Area | Built |
|---|---|---|---|
| Wohnzone zweigeschossig | 382 | 0.32 km² | 87.7% |
| Landwirtschaftszone | 216 | 4.59 km² | 26.9% |
| Wohn- und Arbeitszone 2 | 152 | 0.13 km² | 90.8% |
| Wald | 122 | 0.88 km² | 4.1% |
| Verkehrsfläche Strasse ausserhalb Bauzone | 93 | 0.19 km² | 1.1% |
| Verkehrsflächen Strasse innerhalb Bauzone | 81 | 0.11 km² | 1.2% |
| Dorfzone | 77 | 0.07 km² | 84.4% |
| Zentrumszone | 52 | 0.06 km² | 94.2% |
| Arbeitszone Industriezone | 29 | 0.06 km² | 82.8% |
| Zone für öffentliche Bauten und Anlagen | 17 | 0.05 km² | 64.7% |
| Freihaltezone | 13 | 0.05 km² | 53.8% |
| Wohn- und Arbeitszone 3 | 11 | 0.01 km² | 100.0% |
| Other zones (11 labels) | 47 | 0.23 km² | 61.7% |
Zone names are the municipal designations. A canton lists each wording separately.
Building stock
The building register lists 1’125 buildings with 1’153 dwellings here; 497 of them are single-family houses.
- Buildings
- 1’125
- Dwellings
- 1’153
- Single-family houses
- 497
- Building volume
- 1.5 million m³
Buildings by category
Construction periods
Built parcels by construction period of their newest building
Maps and geodata for Altnau
geopool works as a GIS and geoportal for Altnau. 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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