
Oensingen is a municipality in the district of Gäu in the canton of Solothurn in Switzerland.
The following figures are for the whole municipality Oensingen belongs to. The vacancy rate is 1.13%, 41% below the cantonal average (1.91 %) — a tight rental market. The municipal tax multiplier (Steuerfuss) is 116% (2026), roughly the average of the canton's municipalities (116.6 %). A single person without children on a gross wage of CHF 100'000 pays CHF 14'709 a year in canton, municipality and personal tax in the municipality of Oensingen (tax year 2026, without church, federal and wealth tax). On the mean of the municipalities weighted by residents it is CHF 14'765 in the canton and CHF 12'251 in Switzerland. Median taxable income of all taxpayers is CHF 51'050 (tax period 2022). The municipality has 6'766 residents (2025).
Sources: Swiss Federal Statistical Office (FSO), Swiss Federal Tax Administration (FTA).
1 houses are currently listed to rent in Oensingen on Homematch. The selection updates throughout the day as agencies publish new listings.
Flats and houses in the municipality of Oensingen are offered at a median of CHF 18.4 net (without ancillary costs) per m² per month, the middle half between CHF 16.2 and CHF 19.3 (10 listings, as of 27 Oct 2026). Flats and houses in the municipality of Oensingen are offered at a median of CHF 20.2 gross (with ancillary costs) per m² per month, the middle half between CHF 18.8 and CHF 21.7 (13 listings, as of 27 Oct 2026). These are asking rents from listings on Swiss portals, not rents paid.
Oensingen is located in the canton of Solothurn.
The municipal tax multiplier (Steuerfuss) in Oensingen is 116% of the cantonal base tax (tax year 2026). Note: this is a multiplier of the cantonal income tax, not an effective tax rate, and it can only be compared within the same canton.
A single person without children on a gross wage of CHF 100'000 pays CHF 14'709 a year in canton, municipality and personal tax in the municipality of Oensingen (tax year 2026, without church, federal and wealth tax). The amount holds for exactly this household and income and, unlike the tax multiplier, compares across cantons.
Annual mean 9.6°C with 1'107 mm of rain. Warmest in July (19.0°C), coldest in January (0.7°C). Station: Wynau, 422 m.
Sunshine
1'596 h
Precipitation
1'107 mm
Wynau · 422 m.a.s.l. · 1991–2020 normals · Source: MeteoSchweiz
Mean annual temperature at Basel / Binningen has risen by +2.4°C between the first 30 observed years (1755–1784) and the most recent (1996–2025).
Basel / Binningen · 316 m.a.s.l. · 1755–2025 · Source: MeteoSchweiz NBCN
Source: FSO
9.5 kmCHF 2'500.–/month
10.0 kmCHF 2'600.–/month
10 kmCHF 3'150.–/month
10 kmCHF 2'330.–/month
11 kmCHF 2'890.–/month
11 kmCHF 1'630.–/month
11 kmCHF 2'900.–/month