Val-d'Illiez: population and statistics
Val-d'Illiez has a population of 2,149 (2025) across 39.3 km², or 54.7 people per km². It ranks 929 of 2,115 municipalities by population. Its population is growing: +14.6% between 2015 and 2025.
- 2,149 residents
- 39.3 km²
- 55 people/km²
- 962 m
Key points
Among the 122 municipalities in Valais, Val-d'Illiez ranks No. 42 by population.
Entities in the commercial register per 1,000 inhabitants: 112.1 in Val-d'Illiez, compared with an average of 93.1 in Valais and 83.6 nationally.
Installed photovoltaic capacity per 1,000 inhabitants: 673.0 kW in Val-d'Illiez, compared with an average of 1,004 kW in Valais and 919.4 kW nationally.
A 1 kWp solar panel tilted at 35° generates about 1,103 kWh a year here.
Val-d'Illiez in numbers
Where is Val-d'Illiez?
Population of Val-d'Illiez over time
Val-d'Illiez had 1,875 residents in 2015 and 2,149 in 2025.
| Year | Population |
|---|---|
| 2020 | 2,074 |
| 2021 | 2,119 |
| 2022 | 2,146 |
| 2023 | 2,129 |
| 2024 | 2,145 |
| 2025 | 2,149 |
Did you know?
- “Entities in the commercial register per 1,000 inhabitants”: higher than in 93% of municipalities.
- Its area is roughly equal to 5,499 football pitches.
- Its population density is 4.2 times lower than the national average.
- The nearest municipality is Champéry, 3.5 km away.
- The nearest more populous municipality is Troistorrents (5,068 residents), 3.9 km away.
- A 4 kWp rooftop solar system here would generate about 4,412 kWh a year, roughly what an average household uses.
All indicators for Val-d'Illiez
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 | Val-d'Illiez | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 20.8% | 21.2% | 20.7% | ranked 883 of 1,811 |
Housing
| Indicator | Val-d'Illiez | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 2,293 | 284,329 | 4,927,050 | ranked 526 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 22.0% | 15.6% | 23.3% | ranked 969 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 26.7% | 28.0% | 25.3% | ranked 797 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 75.4% | 63.4% | 69.5% | ranked 505 of 1,806 |
Energy
| Indicator | Val-d'Illiez | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 60.0% | 49.8% | 53.5% | ranked 693 of 1,806 | |
| Heat pumps as main heating (2026) | 9.9% | 12.0% | 13.7% | ranked 1,249 of 1,806 | |
| Wood heating systems (2026) | 26.0% | 13.0% | 12.4% | ranked 352 of 1,806 | |
| District heating (2026) | 0.7% | 3.4% | 1.4% | ranked 1,134 of 1,806 | |
| Photovoltaic installations (2026) | 154 | 18,204 | 329,600 | ranked 712 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 673.0 kW | 1,004 kW | 1,134 kW | ranked 1,509 of 1,806 | |
| Rooftop solar electricity potential (2026) | 27.7 GWh/year | 3,880 GWh/year | 64,783 GWh/year | ranked 747 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 12,890 kWh/inh. | 10,316 kWh/inh. | 9,356 kWh/inh. | ranked 427 of 1,810 |
Economy
| Indicator | Val-d'Illiez | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 227 | 32,476 | 728,011 | ranked 677 of 2,112 | |
| Entities listed in the commercial register (2026) | 241 | 35,035 | 762,757 | ranked 632 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 112.1 | 93.1 | 64.9 | ranked 129 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 71.0% | 72.6% | 65.7% | ranked 452 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 24.9% | 20.9% | 29.0% | ranked 1,278 of 1,808 |
Employment
| Indicator | Val-d'Illiez | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 602 | 202,116 | 5,679,518 | ranked 1,071 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 280.1 | 537.6 | 362.9 | ranked 1,247 of 1,810 | |
| Share of jobs in services (2024) | 69.8% | 71.1% | 63.6% | ranked 664 of 1,804 | |
| Share of jobs in industry and construction (2024) | 14.3% | 21.0% | 24.2% | ranked 1,380 of 1,776 |
Society
| Indicator | Val-d'Illiez | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 19.1% | 26.5% | 18.9% | ranked 892 of 1,811 |
Sunshine and temperatures: Val-d'Illiez
Frequently asked questions
What is the population of Val-d'Illiez?
Val-d'Illiez has 2,149 residents (2025), ranking 929 of 2,115 municipalities.
How big is Val-d'Illiez?
Val-d'Illiez covers 39.3 km², with a density of 55 people per km².
Is the population of Val-d'Illiez growing?
Between 2015 and 2025, the population of Val-d'Illiez went from 1,875 to 2,149, a change of +14.6%.
Where is Val-d'Illiez?
Val-d'Illiez is in Valais. It belongs to District de Monthey (district). Latitude 46.200, longitude 6.900.
Entities in the commercial register per 1,000 inhabitants: what is the figure for Val-d'Illiez?
In Val-d'Illiez, “Entities in the commercial register per 1,000 inhabitants” stands at 112.1 (2026), ranking 129 of 1,811 municipalities; the national median is 64.9.
Installed photovoltaic capacity per 1,000 inhabitants: what is the figure for Val-d'Illiez?
In Val-d'Illiez, “Installed photovoltaic capacity per 1,000 inhabitants” stands at 673.0 kW (2026), ranking 1,509 of 1,806 municipalities; the national median is 1,134 kW.
How much electricity does a solar panel produce in Val-d'Illiez?
In Val-d'Illiez, a 1 kWp south-facing system tilted at 35° produces about 1,103 kWh a year.
Which municipalities border Val-d'Illiez?
The nearest to Val-d'Illiez are Champéry (3.5 km), Troistorrents (3.9 km), Vérossaz (6.7 km), Monthey (6.8 km), Saint-Maurice (8.3 km).