Oensingen: population and statistics
Oensingen has a population of 6,766 (2025) across 12.1 km², or 559 people per km². It ranks 299 of 2,115 municipalities by population. Its population is growing: +9.1% between 2015 and 2025.
- 6,766 residents
- 12.1 km²
- 559 people/km²
- 460 m
Key points
Among the 106 municipalities in Solothurn, Oensingen ranks No. 9 by population.
Share of foreign nationals: 40.4% in Oensingen, compared with an average of 25.9% in Solothurn and 27.7% nationally.
Jobs per 1,000 inhabitants: 855.9 in Oensingen, compared with an average of 520.0 in Solothurn and 622.5 nationally.
A 1 kWp solar panel tilted at 37° generates about 1,170 kWh a year here.
Oensingen in numbers
Where is Oensingen?
Population of Oensingen over time
Oensingen had 6,203 residents in 2015 and 6,766 in 2025.
| Year | Population |
|---|---|
| 2020 | 6,276 |
| 2021 | 6,416 |
| 2022 | 6,607 |
| 2023 | 6,636 |
| 2024 | 6,817 |
| 2025 | 6,766 |
Did you know?
- “Share of foreign nationals”: higher than in 96% of municipalities.
- “Jobs per 1,000 inhabitants”: higher than in 94% of municipalities.
- “Rooftop solar electricity potential”: higher than in 91% of municipalities.
- Its area is roughly equal to 1,695 football pitches.
- Its population density is 2.4 times the national average.
- The nearest municipality is Niederbipp, 2.9 km away.
- The nearest more populous municipality is Langenthal (16,233 residents), 9.9 km away.
All indicators for Oensingen
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 | Oensingen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 17.0% | 21.7% | 20.7% | ranked 1,523 of 1,811 |
Housing
| Indicator | Oensingen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 3,276 | 148,900 | 4,927,050 | ranked 329 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 16.2% | 22.0% | 23.3% | ranked 1,289 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 36.4% | 21.9% | 25.3% | ranked 279 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 64.3% | 70.1% | 69.5% | ranked 1,182 of 1,806 |
Energy
| Indicator | Oensingen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 63.5% | 72.7% | 53.5% | ranked 573 of 1,806 | |
| Heat pumps as main heating (2026) | 19.1% | 11.4% | 13.7% | ranked 597 of 1,806 | |
| Wood heating systems (2026) | 5.0% | 8.1% | 12.4% | ranked 1,451 of 1,806 | |
| District heating (2026) | 9.1% | 2.7% | 1.4% | ranked 263 of 1,806 | |
| Photovoltaic installations (2026) | 131 | 11,211 | 329,600 | ranked 857 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,458 kW | 1,095 kW | 1,134 kW | ranked 571 of 1,806 | |
| Rooftop solar electricity potential (2026) | 66.1 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 195 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 9,775 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 828 of 1,810 |
Economy
| Indicator | Oensingen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 479 | 18,596 | 728,011 | ranked 299 of 2,112 | |
| Entities listed in the commercial register (2026) | 540 | 18,362 | 762,757 | ranked 269 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 79.8 | 63.0 | 64.9 | ranked 448 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 73.3% | 65.9% | 65.7% | ranked 291 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 21.7% | 29.3% | 29.0% | ranked 1,496 of 1,808 |
Employment
| Indicator | Oensingen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 5,791 | 151,633 | 5,679,518 | ranked 163 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 855.9 | 520.0 | 362.9 | ranked 116 of 1,810 | |
| Share of jobs in services (2024) | 63.7% | 67.4% | 63.6% | ranked 899 of 1,804 | |
| Share of jobs in industry and construction (2024) | 35.4% | 27.9% | 24.2% | ranked 425 of 1,776 |
Society
| Indicator | Oensingen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 40.4% | 25.9% | 18.9% | ranked 74 of 1,811 |
Sunshine and temperatures: Oensingen
Frequently asked questions
What is the population of Oensingen?
Oensingen has 6,766 residents (2025), ranking 299 of 2,115 municipalities.
How big is Oensingen?
Oensingen covers 12.1 km², with a density of 559 people per km².
Is the population of Oensingen growing?
Between 2015 and 2025, the population of Oensingen went from 6,203 to 6,766, a change of +9.1%.
Where is Oensingen?
Oensingen is in Solothurn. It belongs to Bezirk Gäu (district). Latitude 47.289, longitude 7.714.
Share of foreign nationals: what is the figure for Oensingen?
In Oensingen, “Share of foreign nationals” stands at 40.4% (2025), ranking 74 of 1,811 municipalities; the national median is 18.9%.
Jobs per 1,000 inhabitants: what is the figure for Oensingen?
In Oensingen, “Jobs per 1,000 inhabitants” stands at 855.9 (2024), ranking 116 of 1,810 municipalities; the national median is 362.9.
How much electricity does a solar panel produce in Oensingen?
In Oensingen, a 1 kWp south-facing system tilted at 37° produces about 1,170 kWh a year.
Which municipalities border Oensingen?
The nearest to Oensingen are Niederbipp (2.9 km), Kestenholz (3.1 km), Balsthal (3.4 km), Walliswil bei Niederbipp (4.3 km), Niederbuchsiten (4.4 km).