Gempen: population and statistics
Gempen has a population of 919 (2025) across 6.0 km², or 153 people per km². It ranks 1,508 of 2,115 municipalities by population. Its population is growing: +3.4% between 2015 and 2025.
- 919 residents
- 6.0 km²
- 153 people/km²
- 679 m
Key points
Among the 106 municipalities in Solothurn, Gempen ranks No. 81 by population.
Share of jobs in industry and construction: 5.1% in Gempen, compared with an average of 27.9% in Solothurn and 22.0% nationally.
Entities in the commercial register per 1,000 inhabitants: 42.4 in Gempen, compared with an average of 63.0 in Solothurn and 83.6 nationally.
A 1 kWp solar panel tilted at 39° generates about 1,160 kWh a year here.
Gempen in numbers
Where is Gempen?
Population of Gempen over time
Gempen had 889 residents in 2015 and 919 in 2025.
| Year | Population |
|---|---|
| 2020 | 904 |
| 2021 | 908 |
| 2022 | 923 |
| 2023 | 932 |
| 2024 | 934 |
| 2025 | 919 |
Did you know?
- “Share of jobs in industry and construction”: lower than in 97% of municipalities.
- “Entities in the commercial register per 1,000 inhabitants”: lower than in 95% of municipalities.
- “Share of single-family houses among residential buildings”: higher than in 91% of municipalities.
- Its area is roughly equal to 839 football pitches.
- The nearest more populous municipality is Nuglar-St. Pantaleon (1,580 residents), 2.6 km away.
- A 4 kWp rooftop solar system here would generate about 4,640 kWh a year, roughly what an average household uses.
All indicators for Gempen
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 | Gempen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 23.5% | 21.7% | 20.7% | ranked 451 of 1,811 |
Housing
| Indicator | Gempen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 447 | 148,900 | 4,927,050 | ranked 1,584 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 22.4% | 22.0% | 23.3% | ranked 946 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 28.2% | 21.9% | 25.3% | ranked 713 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 81.5% | 70.1% | 69.5% | ranked 155 of 1,806 |
Energy
| Indicator | Gempen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 59.0% | 72.7% | 53.5% | ranked 722 of 1,806 | |
| Heat pumps as main heating (2026) | 8.4% | 11.4% | 13.7% | ranked 1,374 of 1,806 | |
| Wood heating systems (2026) | 24.7% | 8.1% | 12.4% | ranked 378 of 1,806 | |
| District heating (2026) | 4.2% | 2.7% | 1.4% | ranked 517 of 1,806 | |
| Photovoltaic installations (2026) | 58 | 11,211 | 329,600 | ranked 1,484 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,193 kW | 1,095 kW | 1,134 kW | ranked 836 of 1,806 | |
| Rooftop solar electricity potential (2026) | 8.9 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 1,626 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 9,706 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 843 of 1,810 |
Economy
| Indicator | Gempen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 50 | 18,596 | 728,011 | ranked 1,694 of 2,112 | |
| Entities listed in the commercial register (2026) | 39 | 18,362 | 762,757 | ranked 1,701 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 42.4 | 63.0 | 64.9 | ranked 1,721 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 59.0% | 65.9% | 65.7% | ranked 1,434 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 41.0% | 29.3% | 29.0% | ranked 141 of 1,808 |
Employment
| Indicator | Gempen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 411 | 151,633 | 5,679,518 | ranked 1,269 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 447.2 | 520.0 | 362.9 | ranked 620 of 1,810 | |
| Share of jobs in services (2024) | 85.6% | 67.4% | 63.6% | ranked 168 of 1,804 | |
| Share of jobs in industry and construction (2024) | 5.1% | 27.9% | 24.2% | ranked 1,724 of 1,776 |
Society
| Indicator | Gempen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 16.4% | 25.9% | 18.9% | ranked 1,094 of 1,811 |
Sunshine and temperatures: Gempen
Frequently asked questions
What is the population of Gempen?
Gempen has 919 residents (2025), ranking 1,508 of 2,115 municipalities.
How big is Gempen?
Gempen covers 6.0 km², with a density of 153 people per km².
Is the population of Gempen growing?
Between 2015 and 2025, the population of Gempen went from 889 to 919, a change of +3.4%.
Where is Gempen?
Gempen is in Solothurn. It belongs to Bezirk Dorneck (district). Latitude 47.476, longitude 7.660.
Share of jobs in industry and construction: what is the figure for Gempen?
In Gempen, “Share of jobs in industry and construction” stands at 5.1% (2024), ranking 1,724 of 1,776 municipalities; the national median is 24.2%.
Entities in the commercial register per 1,000 inhabitants: what is the figure for Gempen?
In Gempen, “Entities in the commercial register per 1,000 inhabitants” stands at 42.4 (2026), ranking 1,721 of 1,811 municipalities; the national median is 64.9.
How much electricity does a solar panel produce in Gempen?
In Gempen, a 1 kWp south-facing system tilted at 39° produces about 1,160 kWh a year.
Which municipalities border Gempen?
The nearest to Gempen are Nuglar-St. Pantaleon (2.6 km), Hochwald (2.7 km), Büren (SO) (2.9 km), Dornach (3.1 km), Arlesheim (3.4 km).