Apartments & Houses for sale in Onex
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Property market in Onex
The following figures are for the whole municipality Onex belongs to. The vacancy rate is 0.14%, 55% below the cantonal average (0.31 %). The municipal tax multiplier (Steuerfuss) is 50.5% (2026), 15% above the average of the canton's municipalities (43.8 %). A single person without children on a gross wage of CHF 100'000 pays CHF 14'174 a year in canton, municipality and personal tax in the municipality of Onex (tax year 2026, without church, federal and wealth tax). On the mean of the municipalities weighted by residents it is CHF 13'648 in the canton and CHF 12'251 in Switzerland. Median taxable income of all taxpayers is CHF 44'150 (tax period 2022). The municipality has 19'101 residents (2025).
Sources: Swiss Federal Statistical Office (FSO), Swiss Federal Tax Administration (FTA).
Frequently asked questions
What are asking prices in Onex?
Flats and houses in the municipality of Onex are offered for sale at a median of CHF 13'940 per m² of living space, the middle half between CHF 12'389 and CHF 14'674 (10 listings, as of 1 Nov 2026). These are asking prices from listings on Swiss portals, not prices paid and not a valuation.
Which canton is Onex in?
Onex is located in the canton of Genève.
What is the municipal tax multiplier (Steuerfuss) in Onex?
The municipal tax multiplier (Steuerfuss) in Onex is 50.5% 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.
How much income tax is paid in Onex?
A single person without children on a gross wage of CHF 100'000 pays CHF 14'174 a year in canton, municipality and personal tax in the municipality of Onex (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.