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Canton of Solothurn

Canton · 91 municipalities with parcel data

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

Gaps in the parcel data

13 municipalities are missing from the current parcel data: Solothurn, Luterbach, Büsserach, Lommiswil, Witterswil, Obergerlafingen, Bärschwil, Biezwil and 5 more. Their pages show no parcel figures.

The parcel data lists 121’042 parcels in the canton of Solothurn, covering 697.3 km². 53.2% of them have at least one registered building. The median parcel measures 871 m².

Key figures

Parcels
121’042
3.4% of Switzerland
Total area
697.3 km²

2.1% of Switzerland

Median area
871 m²

Switzerland: 870 m²

Built share
53.2%

Switzerland: 52%

Median year built
1982

Switzerland: 1976

About the canton of Solothurn

Of its 91 municipalities with parcel data, Grenchen (4’060), Hochwald (4’017) and Olten (3’631) have the most parcels, which together hold 9.7% of the canton's parcels in the data.

The median parcel in the canton measures 871 m², about the same as the Swiss median of 870 m². The canton is about as built-up as Switzerland as a whole: 53.2% of its parcels have a building, against 52% nationwide. Among its municipalities with at least 500 parcels, Schönenwerd has the highest share of built parcels (83.6%) and Hochwald the lowest (14.2%). Kienberg has the largest median parcel (1’795 m²) and Olten the smallest (400 m²).

According to the building register, a building in the canton's municipalities with parcel data holds 1.3 dwellings on average, against 1.6 across Switzerland. Most residential buildings are single-family houses (72.5%, against 63.5% across Switzerland). Non-residential buildings account for 35.6% of all buildings.

Built parcels most often have their newest building from 1981 to 2000 (26.4% of them), and 23% have one from 2001 or later. The median year built, 1982, is more recent than in Switzerland as a whole (1976).

Built and unbuilt parcels

Built: 64’353 (53.2%)Unbuilt: 56’689 (46.8%)

Parcels by zone

Parcels by zone, the 12 largest zones first
ZoneParcels
Landwirtschaftszone31’410311.31 km²12.6%
Wald8’208267.36 km²6.3%
Wohnzone 2-geschossig6’7114.86 km²89.8%
Verkehrszone Strasse6’5639.70 km²2.3%
Verkehrsfläche Strasse4’73111.09 km²0.7%
Kernzone3’8013.46 km²86.4%
Wohnzone, 2-geschossig3’3842.56 km²90.6%
Wohnzone 22’1861.57 km²91.9%
2-geschossige Wohnzone1’7981.51 km²91.6%
Wohnzone zweigeschossig1’5961.23 km²92.0%
Wohnzone 2G1’4440.97 km²93.8%
Wohnzone W21’3510.96 km²92.0%
Other zones (662 labels)47’85980.72 km²82.7%

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

Building stock

The building register lists 108’198 buildings with 143’132 dwellings here; 47’855 of them are single-family houses.

Buildings
108’198
Dwellings
143’132
Single-family houses
47’855
Building volume
142.2 million m³

Buildings by category

  • Residential65’963
  • Mixed use2’323
  • Non-residential38’479
  • Other1’433

Construction periods

Built parcels by construction period of their newest building
  • Before 19205’522
  • 1920-19455’428
  • 1946-19606’957
  • 1961-198013’161
  • 1981-200017’000
  • 2001-20107’188
  • 2011-20205’892
  • 2021 and later1’691
  • Unknown year1’514

Maps and geodata for the canton of Solothurn

geopool works as a GIS and geoportal for the canton of Solothurn. 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.

Municipalities in the canton of Solothurn

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