Walterswil (SO): population and statistics
Walterswil (SO) has a population of 768 (2025) across 4.5 km², or 170 people per km². It ranks 1,603 of 2,115 municipalities by population. Its population is growing: +11.0% between 2015 and 2025.
- 768 residents
- 4.5 km²
- 170 people/km²
- 472 m
Key points
Among the 106 municipalities in Solothurn, Walterswil (SO) ranks No. 87 by population.
Share of limited companies (AG, GmbH) among registered entities: 52.5% in Walterswil (SO), compared with an average of 65.9% in Solothurn and 68.6% nationally.
Share of jobs in industry and construction: 46.6% in Walterswil (SO), compared with an average of 27.9% in Solothurn and 22.0% nationally.
A 1 kWp solar panel tilted at 37° generates about 1,153 kWh a year here.
Walterswil (SO) in numbers
Where is Walterswil (SO)?
Population of Walterswil (SO) over time
Walterswil (SO) had 692 residents in 2015 and 768 in 2025.
| Year | Population |
|---|---|
| 2020 | 743 |
| 2021 | 739 |
| 2022 | 764 |
| 2023 | 749 |
| 2024 | 772 |
| 2025 | 768 |
Did you know?
- “Share of limited companies (AG, GmbH) among registered entities”: lower than in 93% of municipalities.
- “Share of jobs in industry and construction”: higher than in 90% of municipalities.
- Its area is roughly equal to 634 football pitches.
- The nearest more populous municipality is Safenwil (4,629 residents), 1.9 km away.
- A 4 kWp rooftop solar system here would generate about 4,612 kWh a year, roughly what an average household uses.
All indicators for Walterswil (SO)
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 | Walterswil (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 22.1% | 21.7% | 20.7% | ranked 675 of 1,811 |
Housing
| Indicator | Walterswil (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 387 | 148,900 | 4,927,050 | ranked 1,653 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 27.1% | 22.0% | 23.3% | ranked 702 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 16.8% | 21.9% | 25.3% | ranked 1,432 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 78.7% | 70.1% | 69.5% | ranked 289 of 1,806 |
Energy
| Indicator | Walterswil (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 59.3% | 72.7% | 53.5% | ranked 715 of 1,806 | |
| Heat pumps as main heating (2026) | 11.6% | 11.4% | 13.7% | ranked 1,088 of 1,806 | |
| Wood heating systems (2026) | 18.1% | 8.1% | 12.4% | ranked 616 of 1,806 | |
| District heating (2026) | 1.4% | 2.7% | 1.4% | ranked 893 of 1,806 | |
| Photovoltaic installations (2026) | 35 | 11,211 | 329,600 | ranked 1,747 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 2,077 kW | 1,095 kW | 1,134 kW | ranked 193 of 1,806 | |
| Rooftop solar electricity potential (2026) | 11.4 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 1,452 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 14,831 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 257 of 1,810 |
Economy
| Indicator | Walterswil (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 51 | 18,596 | 728,011 | ranked 1,683 of 2,112 | |
| Entities listed in the commercial register (2026) | 40 | 18,362 | 762,757 | ranked 1,698 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 52.1 | 63.0 | 64.9 | ranked 1,452 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 52.5% | 65.9% | 65.7% | ranked 1,669 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 35.0% | 29.3% | 29.0% | ranked 394 of 1,808 |
Employment
| Indicator | Walterswil (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 307 | 151,633 | 5,679,518 | ranked 1,414 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 399.7 | 520.0 | 362.9 | ranked 772 of 1,810 | |
| Share of jobs in services (2024) | 43.3% | 67.4% | 63.6% | ranked 1,523 of 1,804 | |
| Share of jobs in industry and construction (2024) | 46.6% | 27.9% | 24.2% | ranked 170 of 1,776 |
Society
| Indicator | Walterswil (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 15.1% | 25.9% | 18.9% | ranked 1,187 of 1,811 |
Sunshine and temperatures: Walterswil (SO)
Frequently asked questions
What is the population of Walterswil (SO)?
Walterswil (SO) has 768 residents (2025), ranking 1,603 of 2,115 municipalities.
How big is Walterswil (SO)?
Walterswil (SO) covers 4.5 km², with a density of 170 people per km².
Is the population of Walterswil (SO) growing?
Between 2015 and 2025, the population of Walterswil (SO) went from 692 to 768, a change of +11.0%.
Where is Walterswil (SO)?
Walterswil (SO) is in Solothurn. It belongs to Bezirk Olten (district). Latitude 47.326, longitude 7.961.
Share of limited companies (AG, GmbH) among registered entities: what is the figure for Walterswil (SO)?
In Walterswil (SO), “Share of limited companies (AG, GmbH) among registered entities” stands at 52.5% (2026), ranking 1,669 of 1,808 municipalities; the national median is 65.7%.
Share of jobs in industry and construction: what is the figure for Walterswil (SO)?
In Walterswil (SO), “Share of jobs in industry and construction” stands at 46.6% (2024), ranking 170 of 1,776 municipalities; the national median is 24.2%.
How much electricity does a solar panel produce in Walterswil (SO)?
In Walterswil (SO), a 1 kWp south-facing system tilted at 37° produces about 1,153 kWh a year.
Which municipalities border Walterswil (SO)?
The nearest to Walterswil (SO) are Safenwil (1.9 km), Oftringen (3.1 km), Dulliken (3.1 km), Starrkirch-Wil (3.6 km), Däniken (3.8 km).