Troistorrents: population and statistics
Troistorrents has a population of 5,068 (2025) across 37.0 km², or 137 people per km². It ranks 430 of 2,115 municipalities by population. Its population is growing: +12.5% between 2015 and 2025.
- 5,068 residents
- 37.0 km²
- 137 people/km²
- 834 m
Key points
Among the 122 municipalities in Valais, Troistorrents ranks No. 18 by population.
A 1 kWp solar panel tilted at 39° generates about 1,231 kWh a year here.
Troistorrents in numbers
Where is Troistorrents?
Population of Troistorrents over time
Troistorrents had 4,505 residents in 2015 and 5,068 in 2025.
| Year | Population |
|---|---|
| 2020 | 4,806 |
| 2021 | 4,813 |
| 2022 | 4,838 |
| 2023 | 5,008 |
| 2024 | 5,022 |
| 2025 | 5,068 |
Did you know?
- “Photovoltaic installations”: higher than in 94% of municipalities.
- Its area is roughly equal to 5,182 football pitches.
- The nearest more populous municipality is Monthey (19,351 residents), 3.2 km away.
- A 4 kWp rooftop solar system here would generate about 4,924 kWh a year, roughly what an average household uses.
All indicators for Troistorrents
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 | Troistorrents | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 20.2% | 21.2% | 20.7% | ranked 993 of 1,811 |
Housing
| Indicator | Troistorrents | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 4,259 | 284,329 | 4,927,050 | ranked 248 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 20.6% | 15.6% | 23.3% | ranked 1,032 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 17.5% | 28.0% | 25.3% | ranked 1,400 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 75.6% | 63.4% | 69.5% | ranked 493 of 1,806 |
Energy
| Indicator | Troistorrents | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 42.8% | 49.8% | 53.5% | ranked 1,289 of 1,806 | |
| Heat pumps as main heating (2026) | 5.8% | 12.0% | 13.7% | ranked 1,613 of 1,806 | |
| Wood heating systems (2026) | 25.4% | 13.0% | 12.4% | ranked 363 of 1,806 | |
| District heating (2026) | 1.1% | 3.4% | 1.4% | ranked 992 of 1,806 | |
| Photovoltaic installations (2026) | 423 | 18,204 | 329,600 | ranked 125 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,029 kW | 1,004 kW | 1,134 kW | ranked 1,060 of 1,806 | |
| Rooftop solar electricity potential (2026) | 54.1 GWh/year | 3,880 GWh/year | 64,783 GWh/year | ranked 282 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 10,673 kWh/inh. | 10,316 kWh/inh. | 9,356 kWh/inh. | ranked 699 of 1,810 |
Economy
| Indicator | Troistorrents | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 377 | 32,476 | 728,011 | ranked 377 of 2,112 | |
| Entities listed in the commercial register (2026) | 359 | 35,035 | 762,757 | ranked 421 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 70.8 | 93.1 | 64.9 | ranked 675 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 68.0% | 72.6% | 65.7% | ranked 684 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 26.5% | 20.9% | 29.0% | ranked 1,127 of 1,808 |
Employment
| Indicator | Troistorrents | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 1,078 | 202,116 | 5,679,518 | ranked 780 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 212.7 | 537.6 | 362.9 | ranked 1,520 of 1,810 | |
| Share of jobs in services (2024) | 69.8% | 71.1% | 63.6% | ranked 662 of 1,804 | |
| Share of jobs in industry and construction (2024) | 24.9% | 21.0% | 24.2% | ranked 852 of 1,776 |
Society
| Indicator | Troistorrents | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 16.3% | 26.5% | 18.9% | ranked 1,103 of 1,811 |
Sunshine and temperatures: Troistorrents
Frequently asked questions
What is the population of Troistorrents?
Troistorrents has 5,068 residents (2025), ranking 430 of 2,115 municipalities.
How big is Troistorrents?
Troistorrents covers 37.0 km², with a density of 137 people per km².
Is the population of Troistorrents growing?
Between 2015 and 2025, the population of Troistorrents went from 4,505 to 5,068, a change of +12.5%.
Where is Troistorrents?
Troistorrents is in Valais. It belongs to District de Monthey (district). Latitude 46.233, longitude 6.917.
Photovoltaic installations: what is the figure for Troistorrents?
In Troistorrents, “Photovoltaic installations” stands at 423 (2026), ranking 125 of 2,108 municipalities; the national median is 103.
Dwellings: what is the figure for Troistorrents?
In Troistorrents, “Dwellings” stands at 4,259 (2026), ranking 248 of 2,108 municipalities; the national median is 990.
How much electricity does a solar panel produce in Troistorrents?
In Troistorrents, a 1 kWp south-facing system tilted at 39° produces about 1,231 kWh a year.
Which municipalities border Troistorrents?
The nearest to Troistorrents are Monthey (3.2 km), Val-d'Illiez (3.9 km), Collombey-Muraz (4.5 km), Massongex (5.5 km), Vérossaz (5.5 km).