Bellach: population and statistics
Bellach has a population of 5,632 (2025) across 5.3 km², or 1,061 people per km². It ranks 371 of 2,115 municipalities by population. Its population is growing: +8.1% between 2015 and 2025.
- 5,632 residents
- 5.3 km²
- 1,061 people/km²
- 451 m
Key points
Among the 106 municipalities in Solothurn, Bellach ranks No. 12 by population.
Share of jobs in industry and construction: 57.2% in Bellach, compared with an average of 27.9% in Solothurn and 22.0% nationally.
Dwellings in buildings built before 1946: 9.8% in Bellach, compared with an average of 22.0% in Solothurn and 22.4% nationally.
A 1 kWp solar panel tilted at 37° generates about 1,196 kWh a year here.
Bellach in numbers
Where is Bellach?
Population of Bellach over time
Bellach had 5,211 residents in 2015 and 5,632 in 2025.
| Year | Population |
|---|---|
| 2020 | 5,297 |
| 2021 | 5,372 |
| 2022 | 5,399 |
| 2023 | 5,453 |
| 2024 | 5,556 |
| 2025 | 5,632 |
Did you know?
- “Share of jobs in industry and construction”: higher than in 96% of municipalities.
- “Dwellings in buildings built before 1946”: lower than in 90% of municipalities.
- Its area is roughly equal to 744 football pitches.
- Its population density is 4.6 times the national average.
- The nearest municipality is Langendorf, 1.3 km away.
- The nearest more populous municipality is Solothurn (16,830 residents), 2.9 km away.
- A 4 kWp rooftop solar system here would generate about 4,784 kWh a year, roughly what an average household uses.
All indicators for Bellach
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 | Bellach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 24.9% | 21.7% | 20.7% | ranked 293 of 1,811 |
Housing
| Indicator | Bellach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 2,793 | 148,900 | 4,927,050 | ranked 409 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 9.8% | 22.0% | 23.3% | ranked 1,620 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 16.2% | 21.9% | 25.3% | ranked 1,453 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 72.8% | 70.1% | 69.5% | ranked 689 of 1,806 |
Energy
| Indicator | Bellach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 63.1% | 72.7% | 53.5% | ranked 591 of 1,806 | |
| Heat pumps as main heating (2026) | 20.4% | 11.4% | 13.7% | ranked 545 of 1,806 | |
| Wood heating systems (2026) | 5.6% | 8.1% | 12.4% | ranked 1,390 of 1,806 | |
| District heating (2026) | 10.4% | 2.7% | 1.4% | ranked 224 of 1,806 | |
| Photovoltaic installations (2026) | 211 | 11,211 | 329,600 | ranked 480 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,179 kW | 1,095 kW | 1,134 kW | ranked 857 of 1,806 | |
| Rooftop solar electricity potential (2026) | 47.5 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 360 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 8,436 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 1,091 of 1,810 |
Economy
| Indicator | Bellach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 279 | 18,596 | 728,011 | ranked 541 of 2,112 | |
| Entities listed in the commercial register (2026) | 296 | 18,362 | 762,757 | ranked 518 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 52.6 | 63.0 | 64.9 | ranked 1,427 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 71.6% | 65.9% | 65.7% | ranked 402 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 25.3% | 29.3% | 29.0% | ranked 1,234 of 1,808 |
Employment
| Indicator | Bellach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 2,526 | 151,633 | 5,679,518 | ranked 386 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 448.5 | 520.0 | 362.9 | ranked 613 of 1,810 | |
| Share of jobs in services (2024) | 41.2% | 67.4% | 63.6% | ranked 1,567 of 1,804 | |
| Share of jobs in industry and construction (2024) | 57.2% | 27.9% | 24.2% | ranked 68 of 1,776 |
Society
| Indicator | Bellach | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 31.0% | 25.9% | 18.9% | ranked 262 of 1,811 |
Sunshine and temperatures: Bellach
Frequently asked questions
What is the population of Bellach?
Bellach has 5,632 residents (2025), ranking 371 of 2,115 municipalities.
How big is Bellach?
Bellach covers 5.3 km², with a density of 1,061 people per km².
Is the population of Bellach growing?
Between 2015 and 2025, the population of Bellach went from 5,211 to 5,632, a change of +8.1%.
Where is Bellach?
Bellach is in Solothurn. It belongs to Bezirk Lebern (district). Latitude 47.215, longitude 7.500.
Share of jobs in industry and construction: what is the figure for Bellach?
In Bellach, “Share of jobs in industry and construction” stands at 57.2% (2024), ranking 68 of 1,776 municipalities; the national median is 24.2%.
Dwellings in buildings built before 1946: what is the figure for Bellach?
In Bellach, “Dwellings in buildings built before 1946” stands at 9.8% (2026), ranking 1,620 of 1,806 municipalities; the national median is 23.3%.
How much electricity does a solar panel produce in Bellach?
In Bellach, a 1 kWp south-facing system tilted at 37° produces about 1,196 kWh a year.
Which municipalities border Bellach?
The nearest to Bellach are Langendorf (1.3 km), Oberdorf (SO) (1.9 km), Lommiswil (2.3 km), Lüsslingen-Nennigkofen (2.8 km), Rüttenen (2.8 km).