Troinex: population and statistics
Troinex has a population of 3,358 (2025) across 3.4 km², or 979 people per km². It ranks 658 of 2,115 municipalities by population. Its population is growing: +43.8% between 2015 and 2025.
- 3,358 residents
- 3.4 km²
- 979 people/km²
- 426 m
Key points
Among the 45 municipalities in Geneva, Troinex ranks No. 21 by population.
Dwellings in buildings built since 2001: 43.9% in Troinex, compared with an average of 20.5% in Geneva and 24.6% nationally.
Share of people aged 65 and over: 16.2% in Troinex, compared with an average of 16.7% in Geneva and 19.8% nationally.
A 1 kWp solar panel tilted at 37° generates about 1,261 kWh a year here.
Troinex in numbers
Where is Troinex?
Population of Troinex over time
Troinex had 2,336 residents in 2015 and 3,358 in 2025.
| Year | Population |
|---|---|
| 2020 | 2,551 |
| 2021 | 2,591 |
| 2022 | 2,600 |
| 2023 | 2,858 |
| 2024 | 3,145 |
| 2025 | 3,358 |
Did you know?
- Number 1 in Geneva for “Population change over 10 years”.
- “Dwellings in buildings built since 2001”: higher than in 96% of municipalities.
- Its area is roughly equal to 480 football pitches.
- Its population density is 4.2 times the national average.
- The nearest more populous municipality is Carouge (GE) (22,783 residents), 2.1 km away.
- A 4 kWp rooftop solar system here would generate about 5,044 kWh a year, roughly what an average household uses.
All indicators for Troinex
Value for the municipality, then the regional average and the national median (for counts: regional and national totals). The gauge places the municipality between the lowest and highest value in the country.
Population
| Indicator | Troinex | Geneva | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 16.2% | 16.7% | 20.7% | ranked 1,608 of 1,811 |
Housing
| Indicator | Troinex | Geneva | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 1,414 | 256,816 | 4,927,050 | ranked 812 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 13.3% | 20.4% | 23.3% | ranked 1,447 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 43.9% | 20.5% | 25.3% | ranked 79 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 78.9% | 43.2% | 69.5% | ranked 282 of 1,806 |
Energy
| Indicator | Troinex | Geneva | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 75.5% | 80.7% | 53.5% | ranked 198 of 1,806 | |
| Heat pumps as main heating (2026) | 5.8% | 4.2% | 13.7% | ranked 1,608 of 1,806 | |
| Wood heating systems (2026) | 4.1% | 1.5% | 12.4% | ranked 1,516 of 1,806 | |
| District heating (2026) | 4.1% | 9.2% | 1.4% | ranked 521 of 1,806 | |
| Photovoltaic installations (2026) | 141 | 8,437 | 329,600 | ranked 779 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 680.5 kW | 319.8 kW | 1,134 kW | ranked 1,503 of 1,806 | |
| Rooftop solar electricity potential (2026) | 35.0 GWh/year | 2,053 GWh/year | 64,783 GWh/year | ranked 569 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 10,414 kWh/inh. | 3,823 kWh/inh. | 9,356 kWh/inh. | ranked 733 of 1,810 |
Economy
| Indicator | Troinex | Geneva | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 178 | 46,510 | 728,011 | ranked 852 of 2,112 | |
| Entities listed in the commercial register (2026) | 184 | 54,549 | 762,757 | ranked 792 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 54.8 | 101.6 | 64.9 | ranked 1,346 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 68.5% | 71.9% | 65.7% | ranked 637 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 27.2% | 22.8% | 29.0% | ranked 1,065 of 1,808 |
Employment
| Indicator | Troinex | Geneva | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 744 | 401,982 | 5,679,518 | ranked 980 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 221.6 | 748.4 | 362.9 | ranked 1,478 of 1,810 | |
| Share of jobs in services (2024) | 64.4% | 86.4% | 63.6% | ranked 866 of 1,804 | |
| Share of jobs in industry and construction (2024) | 18.3% | 12.7% | 24.2% | ranked 1,194 of 1,776 |
Society
| Indicator | Troinex | Geneva | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 23.5% | 41.9% | 18.9% | ranked 596 of 1,811 |
Sunshine and temperatures: Troinex
Frequently asked questions
What is the population of Troinex?
Troinex has 3,358 residents (2025), ranking 658 of 2,115 municipalities.
How big is Troinex?
Troinex covers 3.4 km², with a density of 979 people per km².
Is the population of Troinex growing?
Between 2015 and 2025, the population of Troinex went from 2,336 to 3,358, a change of +43.8%.
Where is Troinex?
Troinex is in Geneva. It belongs to Canton de Genève (district). Latitude 46.163, longitude 6.147.
Dwellings in buildings built since 2001: what is the figure for Troinex?
In Troinex, “Dwellings in buildings built since 2001” stands at 43.9% (2026), ranking 79 of 1,806 municipalities; the national median is 25.3%.
Share of people aged 65 and over: what is the figure for Troinex?
In Troinex, “Share of people aged 65 and over” stands at 16.2% (2025), ranking 1,608 of 1,811 municipalities; the national median is 20.7%.
How much electricity does a solar panel produce in Troinex?
In Troinex, a 1 kWp south-facing system tilted at 37° produces about 1,261 kWh a year.
Which municipalities border Troinex?
The nearest to Troinex are Carouge (GE) (2.1 km), Plan-les-Ouates (2.4 km), Veyrier (2.8 km), Chêne-Bougeries (3.6 km), Lancy (3.8 km).