Kappel (SO): population and statistics
Kappel (SO) has a population of 3,591 (2025) across 5.1 km², or 704 people per km². It ranks 622 of 2,115 municipalities by population. Its population is growing: +16.3% between 2015 and 2025.
- 3,591 residents
- 5.1 km²
- 704 people/km²
- 425 m
Key points
Among the 106 municipalities in Solothurn, Kappel (SO) ranks No. 26 by population.
Dwellings in buildings built before 1946: 7.8% in Kappel (SO), compared with an average of 22.0% in Solothurn and 22.4% nationally.
Jobs per 1,000 inhabitants: 175.4 in Kappel (SO), compared with an average of 520.0 in Solothurn and 622.5 nationally.
A 1 kWp solar panel tilted at 37° generates about 1,159 kWh a year here.
Kappel (SO) in numbers
Where is Kappel (SO)?
Population of Kappel (SO) over time
Kappel (SO) had 3,087 residents in 2015 and 3,591 in 2025.
| Year | Population |
|---|---|
| 2020 | 3,278 |
| 2021 | 3,396 |
| 2022 | 3,428 |
| 2023 | 3,511 |
| 2024 | 3,562 |
| 2025 | 3,591 |
Did you know?
- “Dwellings in buildings built before 1946”: lower than in 94% of municipalities.
- “Jobs per 1,000 inhabitants”: lower than in 91% of municipalities.
- Its area is roughly equal to 714 football pitches.
- Its population density is 3.0 times the national average.
- The nearest municipality is Hägendorf, 1.1 km away.
- The nearest more populous municipality is Wangen bei Olten (5,598 residents), 2.6 km away.
- A 4 kWp rooftop solar system here would generate about 4,636 kWh a year, roughly what an average household uses.
All indicators for Kappel (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 | Kappel (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 20.2% | 21.7% | 20.7% | ranked 1,001 of 1,811 |
Housing
| Indicator | Kappel (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 1,747 | 148,900 | 4,927,050 | ranked 687 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 7.8% | 22.0% | 23.3% | ranked 1,700 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 36.9% | 21.9% | 25.3% | ranked 259 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 78.1% | 70.1% | 69.5% | ranked 338 of 1,806 |
Energy
| Indicator | Kappel (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 71.0% | 72.7% | 53.5% | ranked 326 of 1,806 | |
| Heat pumps as main heating (2026) | 19.8% | 11.4% | 13.7% | ranked 569 of 1,806 | |
| Wood heating systems (2026) | 4.4% | 8.1% | 12.4% | ranked 1,495 of 1,806 | |
| District heating (2026) | 0.2% | 2.7% | 1.4% | ranked 1,456 of 1,806 | |
| Photovoltaic installations (2026) | 102 | 11,211 | 329,600 | ranked 1,065 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 705.0 kW | 1,095 kW | 1,134 kW | ranked 1,465 of 1,806 | |
| Rooftop solar electricity potential (2026) | 20.4 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 1,002 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 5,689 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 1,575 of 1,810 |
Economy
| Indicator | Kappel (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 165 | 18,596 | 728,011 | ranked 907 of 2,112 | |
| Entities listed in the commercial register (2026) | 176 | 18,362 | 762,757 | ranked 815 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 49.0 | 63.0 | 64.9 | ranked 1,548 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 69.3% | 65.9% | 65.7% | ranked 576 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 27.3% | 29.3% | 29.0% | ranked 1,049 of 1,808 |
Employment
| Indicator | Kappel (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 630 | 151,633 | 5,679,518 | ranked 1,050 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 175.4 | 520.0 | 362.9 | ranked 1,646 of 1,810 | |
| Share of jobs in services (2024) | 61.8% | 67.4% | 63.6% | ranked 961 of 1,804 | |
| Share of jobs in industry and construction (2024) | 34.4% | 27.9% | 24.2% | ranked 461 of 1,776 |
Society
| Indicator | Kappel (SO) | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 26.2% | 25.9% | 18.9% | ranked 473 of 1,811 |
Sunshine and temperatures: Kappel (SO)
Frequently asked questions
What is the population of Kappel (SO)?
Kappel (SO) has 3,591 residents (2025), ranking 622 of 2,115 municipalities.
How big is Kappel (SO)?
Kappel (SO) covers 5.1 km², with a density of 704 people per km².
Is the population of Kappel (SO) growing?
Between 2015 and 2025, the population of Kappel (SO) went from 3,087 to 3,591, a change of +16.3%.
Where is Kappel (SO)?
Kappel (SO) is in Solothurn. It belongs to Bezirk Olten (district). Latitude 47.325, longitude 7.850.
Dwellings in buildings built before 1946: what is the figure for Kappel (SO)?
In Kappel (SO), “Dwellings in buildings built before 1946” stands at 7.8% (2026), ranking 1,700 of 1,806 municipalities; the national median is 23.3%.
Jobs per 1,000 inhabitants: what is the figure for Kappel (SO)?
In Kappel (SO), “Jobs per 1,000 inhabitants” stands at 175.4 (2024), ranking 1,646 of 1,810 municipalities; the national median is 362.9.
How much electricity does a solar panel produce in Kappel (SO)?
In Kappel (SO), a 1 kWp south-facing system tilted at 37° produces about 1,159 kWh a year.
Which municipalities border Kappel (SO)?
The nearest to Kappel (SO) are Hägendorf (1.1 km), Gunzgen (1.8 km), Boningen (1.8 km), Rickenbach (SO) (1.9 km), Wangen bei Olten (2.6 km).