City · Genève

Onex

These figures are for the whole municipality Onex belongs to.

Landscape

An urban landscape

The land-use survey ending in 2025 shows how the area is shared between buildings, woodland, farmland and water.

80%

Settlement

Settlement80%
Forest13%
Water4%
Agriculture3%
Other<1%

Survey period ending 2025 · BFS

Climate

Through the seasons

Annual mean 11.0°C with 946 mm of rain. Warmest in July (20.6°C), coldest in January (2.1°C). Station: Genève / Cointrin, 411 m.

Genève / Cointrin · 411 m.a.s.l. · 1991–2020 normals · MeteoSchweiz

11.0°C

Annual average

Sunshine

1'887 h

Precipitation

946 mm

2°21°Temperature and sunshine across the year.

Warming trend

Mean annual temperature at Genève / Cointrin has risen by +2.1°C between the first 30 observed years (1753–1782) and the most recent (1996–2025).

17532025

Source: MeteoSchweiz NBCN

Housing

Finding a home here

A view of the rental market, drawn from 6 apartment and house listings. These are advertised rents, before any individual negotiation.

Figures of the municipality of Onex

Homes to rent Homes to buy

Gross asking rent

CHF 29.6

/ m² per month

Middle half of advertised rents

29.233.9

1 Nov 2026

More about Housing

Vacancy

0.14%As of 1 June 2026

2026

0.14%

10.50

20222026

Vacancy
2015	0.34%
2016	0.28%
2017	0.12%
2018	0.24%
2019	0.37%
2020	0.20%
2021	0.21%
2022	0.22%
2023	0.29%
2024	0.18%
2025	0.39%
2026	0.14%

Gross asking rentCHF 29.6/ m² per monthFigures of the municipality of Onex · 1 Nov 2026

Figures of the municipality of Onex · Median of 6 listings for flats and houses · middle half 29.2–33.9 · as of 1 Nov 2026

Asking priceCHF 13'940/ m²Figures of the municipality of Onex · 1 Nov 2026

Figures of the municipality of Onex · Median of 10 listings for flats and houses · middle half 12'389–14'674 · as of 1 Nov 2026

Dwellings8'589Counted on 31 Dec 2025 · in 1'321 residential buildings

Newly built dwellings7During 2024

Primary residences91%Dwelling inventory 2026

Broadband coverage33%FibreAs of 2026 · Broadband coverage is one part of everyday infrastructure. This is coverage across the reported area; availability at a particular home still depends on its address.

People

The people who live here

The population grew by 8.3% between 2010 and 2025. The annual record shows how that change unfolded.

End of 2025

2025

19'101

19.1K9.6K0

20212025

Population
2010	17'642
2011	17'637
2012	17'851
2013	18'029
2014	18'305
2015	18'635
2016	18'825
2017	18'977
2018	18'964
2019	19'058
2020	18'933
2021	18'821
2022	18'773
2023	18'886
2024	18'915
2025	19'101

More about People

Population

19'101End of 2025

2025

19'101

19.1K9.6K0

20212025

Population
2010	17'642
2011	17'637
2012	17'851
2013	18'029
2014	18'305
2015	18'635
2016	18'825
2017	18'977
2018	18'964
2019	19'058
2020	18'933
2021	18'821
2022	18'773
2023	18'886
2024	18'915
2025	19'101

Foreign residents

37.4%End of 2025

2025

37.4%

37.418.70

20212025

Foreign residents
2010	35.4%
2011	35.5%
2012	35.9%
2013	36.5%
2014	37.0%
2015	36.6%
2016	36.7%
2017	36.3%
2018	36.3%
2019	36.0%
2020	36.3%
2021	36.3%
2022	36.8%
2023	37.3%
2024	36.9%
2025	37.4%

Jobs (FTE)

3'994

As of 2024 · The reported area accounts for 3'994 full-time-equivalent jobs. This describes employment located here, rather than the number of residents who work.

2024

3'994

4K2K0

20202024

Jobs (FTE)
2011	2'778
2012	2'717
2013	2'833
2014	2'911
2015	3'510
2016	3'659
2017	3'785
2018	3'755
2019	3'842
2020	3'809
2021	3'885
2022	3'928
2023	3'977
2024	3'994

Politics

Local choices

These figures are for the whole municipality Onex belongs to.

Strongest party: MCR · 19.4% · 2023

Election results (1971–2023)

Turnout 38.4%

Source: FSO

Taxes & income

A picture of local costs

Single person without children, gross wage CHF 100'000 · Canton, municipality and personal tax, without church, federal and wealth tax · tax year 2026

Figures of the municipality of Onex

CHF 14'174

/ year

More about Taxes & income

Income taxCHF 14'174/ yearFigures of the municipality of Onex · Tax year 2026

Figures of the municipality of Onex · Single person without children, gross wage CHF 100'000 · Canton, municipality and personal tax, without church, federal and wealth tax · tax year 2026

Tax multiplier

50.5%Tax year 2026

2026

50.5%

50.525.30

20222026

Tax multiplier
2010	50.5%
2011	50.5%
2012	50.5%
2013	50.5%
2014	50.5%
2015	50.5%
2016	50.5%
2017	50.5%
2018	50.5%
2019	50.5%
2020	50.5%
2021	50.5%
2022	50.5%
2023	50.5%
2024	50.5%
2025	50.5%
2026	50.5%

Median taxable income

CHF 44'150All taxpayers · tax period 2022

2022

CHF 44'150

44.2K22.1K0

20182022

Median taxable income
2010	CHF 45'400
2011	CHF 45'100
2012	CHF 44'900
2013	CHF 44'000
2014	CHF 42'900
2015	CHF 42'700
2016	CHF 43'000
2017	CHF 42'200
2018	CHF 42'400
2019	CHF 43'000
2020	CHF 43'000
2021	CHF 44'100
2022	CHF 44'150

Median net income

CHF 49'400As of 2022

2022

CHF 49'400

49.5K24.8K0

20182022

Median net income
2010	CHF 51'900
2011	CHF 51'600
2012	CHF 51'100
2013	CHF 49'900
2014	CHF 49'100
2015	CHF 48'700
2016	CHF 48'800
2017	CHF 48'000
2018	CHF 47'900
2019	CHF 48'300
2020	CHF 48'300
2021	CHF 49'500
2022	CHF 49'400

Paying direct federal tax67%As of 2022

Cantonal tax multiplier

147.5%Tax year 2026

2026

147.5%

147.573.80

20222026

Cantonal tax multiplier
2010	147.5%
2011	147.5%
2012	147.5%
2013	147.5%
2014	147.5%
2015	147.5%
2016	147.5%
2017	147.5%
2018	147.5%
2019	147.5%
2020	147.5%
2021	147.5%
2022	147.5%
2023	147.5%
2024	147.5%
2025	147.5%
2026	147.5%

Federal data — BFS (STATPOP, STATENT, land use), ESTV, BAKOM, ARE. Asking rents and prices: Homematch, from listings on Swiss portals.