Trimbach: population and statistics
Trimbach has a population of 6,928 (2025) across 7.6 km², or 912 people per km². It ranks 286 of 2,115 municipalities by population. Its population is growing: +6.5% between 2015 and 2025.
- 6,928 residents
- 7.6 km²
- 912 people/km²
- 408 m
Key points
Among the 106 municipalities in Solothurn, Trimbach ranks No. 7 by population.
Share of foreign nationals: 44.7% in Trimbach, compared with an average of 25.9% in Solothurn and 27.7% nationally.
Oil or gas heating systems: 79.5% in Trimbach, compared with an average of 72.7% in Solothurn and 61.7% nationally.
A 1 kWp solar panel tilted at 35° generates about 1,125 kWh a year here.
Trimbach in numbers
Where is Trimbach?
Population of Trimbach over time
Trimbach had 6,505 residents in 2015 and 6,928 in 2025.
| Year | Population |
|---|---|
| 2020 | 6,562 |
| 2021 | 6,556 |
| 2022 | 6,644 |
| 2023 | 6,667 |
| 2024 | 6,854 |
| 2025 | 6,928 |
Did you know?
- “Share of foreign nationals”: higher than in 98% of municipalities.
- “Oil or gas heating systems”: higher than in 94% of municipalities.
- “Dwellings in buildings built since 2001”: lower than in 93% of municipalities.
- Its area is roughly equal to 1,064 football pitches.
- Its population density is 3.9 times the national average.
- The nearest more populous municipality is Olten (19,265 residents), 1.3 km away.
- A 4 kWp rooftop solar system here would generate about 4,500 kWh a year, roughly what an average household uses.
All indicators for Trimbach
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 | Trimbach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 18.3% | 21.7% | 20.7% | ranked 1,345 of 1,811 |
Housing
| Indicator | Trimbach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 3,487 | 148,900 | 4,927,050 | ranked 313 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 22.2% | 22.0% | 23.3% | ranked 957 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 10.3% | 21.9% | 25.3% | ranked 1,674 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 69.4% | 70.1% | 69.5% | ranked 910 of 1,806 |
Energy
| Indicator | Trimbach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 79.5% | 72.7% | 53.5% | ranked 107 of 1,806 | |
| Heat pumps as main heating (2026) | 6.9% | 11.4% | 13.7% | ranked 1,513 of 1,806 | |
| Wood heating systems (2026) | 5.5% | 8.1% | 12.4% | ranked 1,393 of 1,806 | |
| District heating (2026) | 2.7% | 2.7% | 1.4% | ranked 675 of 1,806 | |
| Photovoltaic installations (2026) | 155 | 11,211 | 329,600 | ranked 707 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 527.6 kW | 1,095 kW | 1,134 kW | ranked 1,645 of 1,806 | |
| Rooftop solar electricity potential (2026) | 34.0 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 589 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 4,912 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 1,686 of 1,810 |
Economy
| Indicator | Trimbach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 285 | 18,596 | 728,011 | ranked 534 of 2,112 | |
| Entities listed in the commercial register (2026) | 323 | 18,362 | 762,757 | ranked 466 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 46.6 | 63.0 | 64.9 | ranked 1,625 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 62.5% | 65.9% | 65.7% | ranked 1,190 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 34.7% | 29.3% | 29.0% | ranked 420 of 1,808 |
Employment
| Indicator | Trimbach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 1,769 | 151,633 | 5,679,518 | ranked 529 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 255.3 | 520.0 | 362.9 | ranked 1,343 of 1,810 | |
| Share of jobs in services (2024) | 68.0% | 67.4% | 63.6% | ranked 731 of 1,804 | |
| Share of jobs in industry and construction (2024) | 29.7% | 27.9% | 24.2% | ranked 638 of 1,776 |
Society
| Indicator | Trimbach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 44.7% | 25.9% | 18.9% | ranked 39 of 1,811 |
Sunshine and temperatures: Trimbach
Frequently asked questions
What is the population of Trimbach?
Trimbach has 6,928 residents (2025), ranking 286 of 2,115 municipalities.
How big is Trimbach?
Trimbach covers 7.6 km², with a density of 912 people per km².
Is the population of Trimbach growing?
Between 2015 and 2025, the population of Trimbach went from 6,505 to 6,928, a change of +6.5%.
Where is Trimbach?
Trimbach is in Solothurn. It belongs to Bezirk Gösgen (district). Latitude 47.364, longitude 7.900.
Share of foreign nationals: what is the figure for Trimbach?
In Trimbach, “Share of foreign nationals” stands at 44.7% (2025), ranking 39 of 1,811 municipalities; the national median is 18.9%.
Oil or gas heating systems: what is the figure for Trimbach?
In Trimbach, “Oil or gas heating systems” stands at 79.5% (2026), ranking 107 of 1,806 municipalities; the national median is 53.5%.
How much electricity does a solar panel produce in Trimbach?
In Trimbach, a 1 kWp south-facing system tilted at 35° produces about 1,125 kWh a year.
Which municipalities border Trimbach?
The nearest to Trimbach are Olten (1.3 km), Winznau (2.5 km), Starrkirch-Wil (2.6 km), Hauenstein-Ifenthal (2.7 km), Wangen bei Olten (3.2 km).