Monthey: population and statistics
Monthey has a population of 19,351 (2025) across 28.7 km², or 674 people per km². It ranks 60 of 2,115 municipalities by population. Its population is growing: +10.5% between 2015 and 2025.
- 19,351 residents
- 28.7 km²
- 674 people/km²
- 424 m
Key points
Among the 122 municipalities in Valais, Monthey ranks No. 3 by population.
A 1 kWp solar panel tilted at 38° generates about 1,230 kWh a year here.
Monthey in numbers
Where is Monthey?
Population of Monthey over time
Monthey had 17,512 residents in 2015 and 19,351 in 2025.
| Year | Population |
|---|---|
| 2020 | 17,820 |
| 2021 | 18,096 |
| 2022 | 18,446 |
| 2023 | 18,886 |
| 2024 | 19,074 |
| 2025 | 19,351 |
Did you know?
- “Dwellings”: higher than in 97% of municipalities.
- “Rooftop solar electricity potential”: higher than in 97% of municipalities.
- “Establishments”: higher than in 97% of municipalities.
- Its area is roughly equal to 4,020 football pitches.
- Its population density is 2.9 times the national average.
- The nearest municipality is Collombey-Muraz, 1.9 km away.
- The nearest more populous municipality is Sion (37,844 residents), 32 km away.
All indicators for Monthey
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 | Monthey | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 19.3% | 21.2% | 20.7% | ranked 1,147 of 1,811 |
Housing
| Indicator | Monthey | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 9,853 | 284,329 | 4,927,050 | ranked 66 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 9.7% | 15.6% | 23.3% | ranked 1,621 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 30.6% | 28.0% | 25.3% | ranked 554 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 62.5% | 63.4% | 69.5% | ranked 1,263 of 1,806 |
Energy
| Indicator | Monthey | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 49.6% | 49.8% | 53.5% | ranked 1,048 of 1,806 | |
| Heat pumps as main heating (2026) | 9.6% | 12.0% | 13.7% | ranked 1,274 of 1,806 | |
| Wood heating systems (2026) | 8.2% | 13.0% | 12.4% | ranked 1,184 of 1,806 | |
| District heating (2026) | 6.0% | 3.4% | 1.4% | ranked 401 of 1,806 | |
| Photovoltaic installations (2026) | 486 | 18,204 | 329,600 | ranked 87 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 493.3 kW | 1,004 kW | 1,134 kW | ranked 1,673 of 1,806 | |
| Rooftop solar electricity potential (2026) | 108.5 GWh/year | 3,880 GWh/year | 64,783 GWh/year | ranked 66 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 5,610 kWh/inh. | 10,316 kWh/inh. | 9,356 kWh/inh. | ranked 1,589 of 1,810 |
Economy
| Indicator | Monthey | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 1,403 | 32,476 | 728,011 | ranked 66 of 2,112 | |
| Entities listed in the commercial register (2026) | 1,645 | 35,035 | 762,757 | ranked 65 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 85.0 | 93.1 | 64.9 | ranked 354 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 69.4% | 72.6% | 65.7% | ranked 567 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 24.1% | 20.9% | 29.0% | ranked 1,336 of 1,808 |
Employment
| Indicator | Monthey | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 12,098 | 202,116 | 5,679,518 | ranked 73 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 625.2 | 537.6 | 362.9 | ranked 277 of 1,810 | |
| Share of jobs in services (2024) | 71.3% | 71.1% | 63.6% | ranked 613 of 1,804 | |
| Share of jobs in industry and construction (2024) | 28.3% | 21.0% | 24.2% | ranked 694 of 1,776 |
Society
| Indicator | Monthey | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 35.7% | 26.5% | 18.9% | ranked 140 of 1,811 |
Sunshine and temperatures: Monthey
Frequently asked questions
What is the population of Monthey?
Monthey has 19,351 residents (2025), ranking 60 of 2,115 municipalities.
How big is Monthey?
Monthey covers 28.7 km², with a density of 674 people per km².
Is the population of Monthey growing?
Between 2015 and 2025, the population of Monthey went from 17,512 to 19,351, a change of +10.5%.
Where is Monthey?
Monthey is in Valais. It belongs to District de Monthey (district). Latitude 46.250, longitude 6.950.
Dwellings: what is the figure for Monthey?
In Monthey, “Dwellings” stands at 9,853 (2026), ranking 66 of 2,108 municipalities; the national median is 990.
Rooftop solar electricity potential: what is the figure for Monthey?
In Monthey, “Rooftop solar electricity potential” stands at 108.5 GWh/year (2026), ranking 66 of 2,114 municipalities; the national median is 19.0 GWh/year.
How much electricity does a solar panel produce in Monthey?
In Monthey, a 1 kWp south-facing system tilted at 38° produces about 1,230 kWh a year.
Which municipalities border Monthey?
The nearest to Monthey are Collombey-Muraz (1.9 km), Massongex (2.6 km), Troistorrents (3.2 km), Vérossaz (4.5 km), Bex (5.1 km).