Olten
Municipality in the canton of Solothurn · FSO no. 2581
Parcel data from Jul 2025, statistics computed on 26 Sept 2026.
The parcel data lists 3’631 parcels in Olten, covering 11.5 km². 81.9% of them have at least one registered building. The median parcel measures 400 m².
Key figures
- Parcels
- 3’631
- 3% of the canton
- Total area
- 11.5 km²
1.6% of the canton
- Median area
- 400 m²
Canton: 871 m²
Switzerland: 870 m²
- Built share
- 81.9%
Canton: 53.2%
Switzerland: 52%
- Median year built
- 1938
Canton: 1982
Switzerland: 1976
About Olten
Olten is a municipality in the canton of Solothurn and holds 3% of the canton's parcels in the data, on 1.6% of their area. The median parcel in Olten measures 400 m², smaller than the canton median of 871 m². Olten is more built-up than the canton as a whole: 81.9% of its parcels have a building, against 53.2% across the canton.
The zones with the most parcels are Zweigeschossige Wohnzone (0.5) (21.9%), Zweigeschossige Wohnzone (0.6) (21.1%) and Dreigeschossige Wohnzone (13.1%). In total, Olten uses 41 zone designations.
According to the building register, Olten has 4’570 buildings with 11’079 dwellings, 2.4 dwellings per building on average. Residential buildings mix single-family houses and buildings with several dwellings: single-family houses make up 54% of them. Non-residential buildings account for 26.7% of all buildings.
Built parcels most often have their newest building from 1920 to 1945 (30.4% of them), and 10.8% have one from 2001 or later. The median year built, 1938, is earlier than in the canton as a whole (1982).
Built and unbuilt parcels
Built: 2’975 (81.9%)Unbuilt: 656 (18.1%)
Parcels by zone
| Zone | Parcels | Area | Built |
|---|---|---|---|
| Zweigeschossige Wohnzone (0.5) | 794 | 0.33 km² | 97.5% |
| Zweigeschossige Wohnzone (0.6) | 765 | 0.38 km² | 95.6% |
| Dreigeschossige Wohnzone | 477 | 0.54 km² | 88.9% |
| Verkehrszone Strasse | 323 | 0.67 km² | 15.5% |
| Kernrandzone (Gestaltungsplanobligatorium) | 226 | 0.12 km² | 87.6% |
| Dreigeschossige Mischzone | 216 | 0.20 km² | 94.0% |
| Kernzone (Gestaltungsplanobligatorium) | 124 | 0.08 km² | 85.5% |
| Zweigeschossige Wohnzone (0.4) | 92 | 0.08 km² | 84.8% |
| Altstadtzone | 88 | 0.02 km² | 75.0% |
| Zweigeschossige Mischzone | 79 | 0.04 km² | 92.4% |
| Gewerbezone mit Wohnanteil | 70 | 0.18 km² | 87.1% |
| Gewerbezone | 60 | 0.35 km² | 81.7% |
| Other zones (29 labels) | 317 | 8.49 km² | 51.1% |
Zone names are the municipal designations. A canton lists each wording separately.
Building stock
The building register lists 4’570 buildings with 11’079 dwellings here; 1’673 of them are single-family houses.
- Buildings
- 4’570
- Dwellings
- 11’079
- Single-family houses
- 1’673
- Building volume
- 10.7 million m³
Buildings by category
Construction periods
Built parcels by construction period of their newest buildingMaps and geodata for Olten
geopool works as a GIS and geoportal for Olten. 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.
Explore more data for Olten
- Building zones and density Oltenin room
- ÖREB extract Oltenin lookup
- Building age Oltenin roots
- Building heights and headroom Oltenin roofs
- Solar potential Oltenin soolar
- Points of interest and accessibility Oltenin scoore
- Tax rates Oltenin taxoo
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