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Municipality · Geneva

Onex

Get to know Onex

Onex is a municipality in the canton of Geneva in Switzerland.

Wikipedia contributors · CC BY-SA 4.0

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

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.

Homes to rentHomes 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
20150.34%
20160.28%
20170.12%
20180.24%
20190.37%
20200.20%
20210.21%
20220.22%
20230.29%
20240.18%
20250.39%
20260.14%
Gross asking rentCHF 29.6/ m² per month1 Nov 2026
Asking priceCHF 13'940/ m²1 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
201017'642
201117'637
201217'851
201318'029
201418'305
201518'635
201618'825
201718'977
201818'964
201919'058
202018'933
202118'821
202218'773
202318'886
202418'915
202519'101
More about People
Population
19'101End of 2025

2025

19'101

19.1K9.6K0
20212025
Population
201017'642
201117'637
201217'851
201318'029
201418'305
201518'635
201618'825
201718'977
201818'964
201919'058
202018'933
202118'821
202218'773
202318'886
202418'915
202519'101
Foreign residents
37.4%End of 2025

2025

37.4%

37.418.70
20212025
Foreign residents
201035.4%
201135.5%
201235.9%
201336.5%
201437.0%
201536.6%
201636.7%
201736.3%
201836.3%
201936.0%
202036.3%
202136.3%
202236.8%
202337.3%
202436.9%
202537.4%
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)
20112'778
20122'717
20132'833
20142'911
20153'510
20163'659
20173'785
20183'755
20193'842
20203'809
20213'885
20223'928
20233'977
20243'994

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

CHF 14'174

/ year

More about Taxes & income
Income taxCHF 14'174/ yearTax year 2026

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
201050.5%
201150.5%
201250.5%
201350.5%
201450.5%
201550.5%
201650.5%
201750.5%
201850.5%
201950.5%
202050.5%
202150.5%
202250.5%
202350.5%
202450.5%
202550.5%
202650.5%
Median taxable income
CHF 44'150All taxpayers · tax period 2022

2022

CHF 44'150

44.2K22.1K0
20182022
Median taxable income
2010CHF 45'400
2011CHF 45'100
2012CHF 44'900
2013CHF 44'000
2014CHF 42'900
2015CHF 42'700
2016CHF 43'000
2017CHF 42'200
2018CHF 42'400
2019CHF 43'000
2020CHF 43'000
2021CHF 44'100
2022CHF 44'150
Median net income
CHF 49'400As of 2022

2022

CHF 49'400

49.5K24.8K0
20182022
Median net income
2010CHF 51'900
2011CHF 51'600
2012CHF 51'100
2013CHF 49'900
2014CHF 49'100
2015CHF 48'700
2016CHF 48'800
2017CHF 48'000
2018CHF 47'900
2019CHF 48'300
2020CHF 48'300
2021CHF 49'500
2022CHF 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
2010147.5%
2011147.5%
2012147.5%
2013147.5%
2014147.5%
2015147.5%
2016147.5%
2017147.5%
2018147.5%
2019147.5%
2020147.5%
2021147.5%
2022147.5%
2023147.5%
2024147.5%
2025147.5%
2026147.5%

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

The municipality
Settlement type
Urban
Municipality type
Urban municipality of a large agglomeration
Language region
French
Agglomeration
Genève (CH)
Labour market region
Vernier–Lancy
Statistical city
Yes
Mountain region
No

Federal Statistical Office · 2020