Onex Population 2026
Onex has a population of 17,302, making it the #53 biggest city in 🇨🇭 Switzerland, located in Geneva. Roughly 0.2% of Switzerland's population lives here. It is about 24× smaller than Zürich, the country's biggest city.
Population (city proper)
17,302
Rank in Switzerland
#53
Coordinates
46.18°N, 6.10°E
~426 m elevation · Europe/Zurich
Distance to capital (Bern)
133 km
83 miles, straight line
Other big cities in Geneva
Cities near Onex
FAQ
What is the population of Onex?
Onex has a population of 17,302 (city proper, latest official figure via GeoNames), making it the #53 biggest city in Switzerland.
What region is Onex in?
Onex is located in Geneva, Switzerland.
Is Onex the capital of Switzerland?
No, the capital of Switzerland is Bern, about 133 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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