Sierre: population and statistics
Sierre has a population of 18,059 (2025) across 19.1 km², or 944 people per km². It ranks 70 of 2,115 municipalities by population. Its population is growing: +8.1% between 2015 and 2025.
- 18,059 residents
- 19.1 km²
- 944 people/km²
- 533 m
Key points
Among the 122 municipalities in Valais, Sierre ranks No. 4 by population.
A 1 kWp solar panel tilted at 41° generates about 1,424 kWh a year here.
Sierre in numbers
Where is Sierre?
Population of Sierre over time
Sierre had 16,711 residents in 2015 and 18,059 in 2025.
| Year | Population |
|---|---|
| 2020 | 16,819 |
| 2021 | 17,115 |
| 2022 | 17,295 |
| 2023 | 17,663 |
| 2024 | 17,829 |
| 2025 | 18,059 |
Did you know?
- “Rooftop solar electricity potential”: higher than in 99% of municipalities.
- “Dwellings”: higher than in 97% of municipalities.
- “Establishments”: higher than in 97% of municipalities.
- Its area is roughly equal to 2,679 football pitches.
- Its population density is 4.1 times the national average.
- The nearest municipality is Noble-Contrée, 0.9 km away.
- The nearest more populous municipality is Sion (37,844 residents), 14 km away.
All indicators for Sierre
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 | Sierre | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 22.4% | 21.2% | 20.7% | ranked 624 of 1,811 |
Housing
| Indicator | Sierre | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 10,122 | 284,329 | 4,927,050 | ranked 63 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 16.7% | 15.6% | 23.3% | ranked 1,262 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 25.7% | 28.0% | 25.3% | ranked 871 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 53.1% | 63.4% | 69.5% | ranked 1,591 of 1,806 |
Energy
| Indicator | Sierre | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 83.7% | 49.8% | 53.5% | ranked 51 of 1,806 | |
| Heat pumps as main heating (2026) | 5.0% | 12.0% | 13.7% | ranked 1,655 of 1,806 | |
| Wood heating systems (2026) | 1.4% | 13.0% | 12.4% | ranked 1,743 of 1,806 | |
| District heating (2026) | 0.1% | 3.4% | 1.4% | ranked 1,483 of 1,806 | |
| Photovoltaic installations (2026) | 588 | 18,204 | 329,600 | ranked 56 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,239 kW | 1,004 kW | 1,134 kW | ranked 787 of 1,806 | |
| Rooftop solar electricity potential (2026) | 156.8 GWh/year | 3,880 GWh/year | 64,783 GWh/year | ranked 27 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 8,682 kWh/inh. | 10,316 kWh/inh. | 9,356 kWh/inh. | ranked 1,041 of 1,810 |
Economy
| Indicator | Sierre | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 1,558 | 32,476 | 728,011 | ranked 56 of 2,112 | |
| Entities listed in the commercial register (2026) | 1,538 | 35,035 | 762,757 | ranked 76 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 85.2 | 93.1 | 64.9 | ranked 352 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 74.0% | 72.6% | 65.7% | ranked 246 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 17.9% | 20.9% | 29.0% | ranked 1,680 of 1,808 |
Employment
| Indicator | Sierre | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 11,670 | 202,116 | 5,679,518 | ranked 76 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 646.2 | 537.6 | 362.9 | ranked 254 of 1,810 | |
| Share of jobs in services (2024) | 76.2% | 71.1% | 63.6% | ranked 434 of 1,804 | |
| Share of jobs in industry and construction (2024) | 22.1% | 21.0% | 24.2% | ranked 983 of 1,776 |
Society
| Indicator | Sierre | Valais | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 36.8% | 26.5% | 18.9% | ranked 116 of 1,811 |
Sunshine and temperatures: Sierre
Frequently asked questions
What is the population of Sierre?
Sierre has 18,059 residents (2025), ranking 70 of 2,115 municipalities.
How big is Sierre?
Sierre covers 19.1 km², with a density of 944 people per km².
Is the population of Sierre growing?
Between 2015 and 2025, the population of Sierre went from 16,711 to 18,059, a change of +8.1%.
Where is Sierre?
Sierre is in Valais. It belongs to District de Sierre (district). Latitude 46.292, longitude 7.532.
Rooftop solar electricity potential: what is the figure for Sierre?
In Sierre, “Rooftop solar electricity potential” stands at 156.8 GWh/year (2026), ranking 27 of 2,114 municipalities; the national median is 19.0 GWh/year.
Dwellings: what is the figure for Sierre?
In Sierre, “Dwellings” stands at 10,122 (2026), ranking 63 of 2,108 municipalities; the national median is 990.
How much electricity does a solar panel produce in Sierre?
In Sierre, a 1 kWp south-facing system tilted at 41° produces about 1,424 kWh a year.
Which municipalities border Sierre?
The nearest to Sierre are Noble-Contrée (0.9 km), Chippis (0.9 km), Salgesch (2.8 km), Chalais (3.7 km), Crans-Montana (4.4 km).