Winznau: population and statistics
Winznau has a population of 2,061 (2025) across 3.9 km², or 523 people per km². It ranks 955 of 2,115 municipalities by population. Its population is growing: +13.2% between 2015 and 2025.
- 2,061 residents
- 3.9 km²
- 523 people/km²
- 403 m
Key points
Among the 106 municipalities in Solothurn, Winznau ranks No. 42 by population.
Jobs per 1,000 inhabitants: 161.6 in Winznau, compared with an average of 520.0 in Solothurn and 622.5 nationally.
Share of limited companies (AG, GmbH) among registered entities: 52.0% in Winznau, compared with an average of 65.9% in Solothurn and 68.6% nationally.
A 1 kWp solar panel tilted at 37° generates about 1,145 kWh a year here.
Winznau in numbers
Where is Winznau?
Population of Winznau over time
Winznau had 1,820 residents in 2015 and 2,061 in 2025.
| Year | Population |
|---|---|
| 2020 | 1,968 |
| 2021 | 1,956 |
| 2022 | 2,017 |
| 2023 | 2,058 |
| 2024 | 2,053 |
| 2025 | 2,061 |
Did you know?
- “Jobs per 1,000 inhabitants”: lower than in 93% of municipalities.
- “Share of limited companies (AG, GmbH) among registered entities”: lower than in 93% of municipalities.
- Its area is roughly equal to 552 football pitches.
- Its population density is 2.3 times the national average.
- The nearest municipality is Obergösgen, 1.5 km away.
- The nearest more populous municipality is Dulliken (5,489 residents), 1.7 km away.
- A 4 kWp rooftop solar system here would generate about 4,580 kWh a year, roughly what an average household uses.
All indicators for Winznau
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 | Winznau | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 23.4% | 21.7% | 20.7% | ranked 460 of 1,811 |
Housing
| Indicator | Winznau | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 1,039 | 148,900 | 4,927,050 | ranked 1,016 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 19.4% | 22.0% | 23.3% | ranked 1,095 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 23.1% | 21.9% | 25.3% | ranked 1,038 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 79.4% | 70.1% | 69.5% | ranked 253 of 1,806 |
Energy
| Indicator | Winznau | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 60.5% | 72.7% | 53.5% | ranked 673 of 1,806 | |
| Heat pumps as main heating (2026) | 13.0% | 11.4% | 13.7% | ranked 958 of 1,806 | |
| Wood heating systems (2026) | 11.9% | 8.1% | 12.4% | ranked 931 of 1,806 | |
| District heating (2026) | 0.5% | 2.7% | 1.4% | ranked 1,217 of 1,806 | |
| Photovoltaic installations (2026) | 103 | 11,211 | 329,600 | ranked 1,054 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,016 kW | 1,095 kW | 1,134 kW | ranked 1,074 of 1,806 | |
| Rooftop solar electricity potential (2026) | 15.5 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 1,218 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 7,525 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 1,275 of 1,810 |
Economy
| Indicator | Winznau | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 91 | 18,596 | 728,011 | ranked 1,315 of 2,112 | |
| Entities listed in the commercial register (2026) | 98 | 18,362 | 762,757 | ranked 1,174 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 47.5 | 63.0 | 64.9 | ranked 1,591 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 52.0% | 65.9% | 65.7% | ranked 1,682 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 41.8% | 29.3% | 29.0% | ranked 123 of 1,808 |
Employment
| Indicator | Winznau | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 333 | 151,633 | 5,679,518 | ranked 1,374 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 161.6 | 520.0 | 362.9 | ranked 1,691 of 1,810 | |
| Share of jobs in services (2024) | 72.4% | 67.4% | 63.6% | ranked 572 of 1,804 | |
| Share of jobs in industry and construction (2024) | 19.2% | 27.9% | 24.2% | ranked 1,140 of 1,776 |
Society
| Indicator | Winznau | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 18.1% | 25.9% | 18.9% | ranked 979 of 1,811 |
Sunshine and temperatures: Winznau
Frequently asked questions
What is the population of Winznau?
Winznau has 2,061 residents (2025), ranking 955 of 2,115 municipalities.
How big is Winznau?
Winznau covers 3.9 km², with a density of 523 people per km².
Is the population of Winznau growing?
Between 2015 and 2025, the population of Winznau went from 1,820 to 2,061, a change of +13.2%.
Where is Winznau?
Winznau is in Solothurn. It belongs to Bezirk Gösgen (district). Latitude 47.366, longitude 7.933.
Jobs per 1,000 inhabitants: what is the figure for Winznau?
In Winznau, “Jobs per 1,000 inhabitants” stands at 161.6 (2024), ranking 1,691 of 1,810 municipalities; the national median is 362.9.
Share of limited companies (AG, GmbH) among registered entities: what is the figure for Winznau?
In Winznau, “Share of limited companies (AG, GmbH) among registered entities” stands at 52.0% (2026), ranking 1,682 of 1,808 municipalities; the national median is 65.7%.
How much electricity does a solar panel produce in Winznau?
In Winznau, a 1 kWp south-facing system tilted at 37° produces about 1,145 kWh a year.
Which municipalities border Winznau?
The nearest to Winznau are Obergösgen (1.5 km), Dulliken (1.7 km), Starrkirch-Wil (2.0 km), Olten (2.4 km), Lostorf (2.4 km).