Gunzgen: population and statistics
Gunzgen has a population of 1,783 (2025) across 3.9 km², or 456 people per km². It ranks 1,038 of 2,115 municipalities by population. Its population is growing: +7.7% between 2015 and 2025.
- 1,783 residents
- 3.9 km²
- 456 people/km²
- 430 m
Key points
Among the 106 municipalities in Solothurn, Gunzgen ranks No. 49 by population.
Dwellings in buildings built before 1946: 10.6% in Gunzgen, compared with an average of 22.0% in Solothurn and 22.4% nationally.
Oil or gas heating systems: 69.7% in Gunzgen, compared with an average of 72.7% in Solothurn and 61.7% nationally.
A 1 kWp solar panel tilted at 37° generates about 1,166 kWh a year here.
Gunzgen in numbers
Where is Gunzgen?
Population of Gunzgen over time
Gunzgen had 1,655 residents in 2015 and 1,783 in 2025.
| Year | Population |
|---|---|
| 2020 | 1,689 |
| 2021 | 1,673 |
| 2022 | 1,714 |
| 2023 | 1,712 |
| 2024 | 1,696 |
| 2025 | 1,783 |
Did you know?
- Its area is roughly equal to 548 football pitches.
- The nearest municipality is Härkingen, 1.1 km away.
- The nearest more populous municipality is Kappel (SO) (3,591 residents), 1.8 km away.
- A 4 kWp rooftop solar system here would generate about 4,664 kWh a year, roughly what an average household uses.
All indicators for Gunzgen
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 | Gunzgen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 22.7% | 21.7% | 20.7% | ranked 574 of 1,811 |
Housing
| Indicator | Gunzgen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 897 | 148,900 | 4,927,050 | ranked 1,108 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 10.6% | 22.0% | 23.3% | ranked 1,577 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 27.1% | 21.9% | 25.3% | ranked 776 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 78.3% | 70.1% | 69.5% | ranked 317 of 1,806 |
Energy
| Indicator | Gunzgen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 69.7% | 72.7% | 53.5% | ranked 365 of 1,806 | |
| Heat pumps as main heating (2026) | 17.8% | 11.4% | 13.7% | ranked 675 of 1,806 | |
| Wood heating systems (2026) | 8.1% | 8.1% | 12.4% | ranked 1,193 of 1,806 | |
| District heating (2026) | 0.5% | 2.7% | 1.4% | ranked 1,211 of 1,806 | |
| Photovoltaic installations (2026) | 66 | 11,211 | 329,600 | ranked 1,387 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,432 kW | 1,095 kW | 1,134 kW | ranked 602 of 1,806 | |
| Rooftop solar electricity potential (2026) | 19.8 GWh/year | 2,373 GWh/year | 64,783 GWh/year | ranked 1,020 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 11,110 kWh/inh. | 8,138 kWh/inh. | 9,356 kWh/inh. | ranked 639 of 1,810 |
Economy
| Indicator | Gunzgen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 88 | 18,596 | 728,011 | ranked 1,343 of 2,112 | |
| Entities listed in the commercial register (2026) | 106 | 18,362 | 762,757 | ranked 1,119 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 59.5 | 63.0 | 64.9 | ranked 1,136 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 65.1% | 65.9% | 65.7% | ranked 950 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 30.2% | 29.3% | 29.0% | ranked 801 of 1,808 |
Employment
| Indicator | Gunzgen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 979 | 151,633 | 5,679,518 | ranked 836 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 549.1 | 520.0 | 362.9 | ranked 396 of 1,810 | |
| Share of jobs in services (2024) | 68.2% | 67.4% | 63.6% | ranked 719 of 1,804 | |
| Share of jobs in industry and construction (2024) | 28.6% | 27.9% | 24.2% | ranked 684 of 1,776 |
Society
| Indicator | Gunzgen | Solothurn | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 15.5% | 25.9% | 18.9% | ranked 1,152 of 1,811 |
Sunshine and temperatures: Gunzgen
Frequently asked questions
What is the population of Gunzgen?
Gunzgen has 1,783 residents (2025), ranking 1,038 of 2,115 municipalities.
How big is Gunzgen?
Gunzgen covers 3.9 km², with a density of 456 people per km².
Is the population of Gunzgen growing?
Between 2015 and 2025, the population of Gunzgen went from 1,655 to 1,783, a change of +7.7%.
Where is Gunzgen?
Gunzgen is in Solothurn. It belongs to Bezirk Olten (district). Latitude 47.316, longitude 7.829.
Dwellings in buildings built before 1946: what is the figure for Gunzgen?
In Gunzgen, “Dwellings in buildings built before 1946” stands at 10.6% (2026), ranking 1,577 of 1,806 municipalities; the national median is 23.3%.
Oil or gas heating systems: what is the figure for Gunzgen?
In Gunzgen, “Oil or gas heating systems” stands at 69.7% (2026), ranking 365 of 1,806 municipalities; the national median is 53.5%.
How much electricity does a solar panel produce in Gunzgen?
In Gunzgen, a 1 kWp south-facing system tilted at 37° produces about 1,166 kWh a year.
Which municipalities border Gunzgen?
The nearest to Gunzgen are Härkingen (1.1 km), Kappel (SO) (1.8 km), Hägendorf (2.3 km), Boningen (2.3 km), Egerkingen (2.7 km).