Jonschwil: population and statistics
Jonschwil has a population of 3,979 (2025) across 11.0 km², or 362 people per km². It ranks 558 of 2,115 municipalities by population. Its population is growing: +5.6% between 2015 and 2025.
- 3,979 residents
- 11.0 km²
- 362 people/km²
- 594 m
Key points
Among the 75 municipalities in St. Gallen, Jonschwil ranks No. 48 by population.
Installed photovoltaic capacity per 1,000 inhabitants: 2,733 kW in Jonschwil, compared with an average of 1,325 kW in St. Gallen and 919.4 kW nationally.
Share of single-family houses among residential buildings: 78.4% in Jonschwil, compared with an average of 64.1% in St. Gallen and 56.9% nationally.
A 1 kWp solar panel tilted at 38° generates about 1,132 kWh a year here.
Jonschwil in numbers
Where is Jonschwil?
Population of Jonschwil over time
Jonschwil had 3,767 residents in 2015 and 3,979 in 2025.
| Year | Population |
|---|---|
| 2020 | 3,873 |
| 2021 | 3,920 |
| 2022 | 3,961 |
| 2023 | 4,023 |
| 2024 | 3,992 |
| 2025 | 3,979 |
Did you know?
- “Installed photovoltaic capacity per 1,000 inhabitants”: higher than in 96% of municipalities.
- Its area is roughly equal to 1,539 football pitches.
- The nearest more populous municipality is Oberuzwil (6,864 residents), 2.6 km away.
- A 4 kWp rooftop solar system here would generate about 4,528 kWh a year, roughly what an average household uses.
All indicators for Jonschwil
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 | Jonschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 19.8% | 19.9% | 20.7% | ranked 1,078 of 1,811 |
Housing
| Indicator | Jonschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 1,783 | 280,853 | 4,927,050 | ranked 670 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 14.2% | 23.5% | 23.3% | ranked 1,392 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 29.7% | 24.8% | 25.3% | ranked 618 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 78.4% | 64.1% | 69.5% | ranked 304 of 1,806 |
Energy
| Indicator | Jonschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 48.1% | 52.2% | 53.5% | ranked 1,101 of 1,806 | |
| Heat pumps as main heating (2026) | 36.5% | 30.7% | 13.7% | ranked 128 of 1,806 | |
| Wood heating systems (2026) | 10.7% | 9.0% | 12.4% | ranked 1,008 of 1,806 | |
| District heating (2026) | 0.2% | 6.0% | 1.4% | ranked 1,443 of 1,806 | |
| Photovoltaic installations (2026) | 233 | 26,111 | 329,600 | ranked 416 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 2,733 kW | 1,325 kW | 1,134 kW | ranked 76 of 1,806 | |
| Rooftop solar electricity potential (2026) | 49.2 GWh/year | 4,072 GWh/year | 64,783 GWh/year | ranked 338 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 12,377 kWh/inh. | 7,485 kWh/inh. | 9,356 kWh/inh. | ranked 480 of 1,810 |
Economy
| Indicator | Jonschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 268 | 39,699 | 728,011 | ranked 569 of 2,112 | |
| Entities listed in the commercial register (2026) | 262 | 42,658 | 762,757 | ranked 574 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 65.8 | 78.4 | 64.9 | ranked 869 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 64.1% | 65.2% | 65.7% | ranked 1,044 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 30.2% | 29.2% | 29.0% | ranked 801 of 1,808 |
Employment
| Indicator | Jonschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 2,414 | 317,461 | 5,679,518 | ranked 410 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 606.7 | 583.5 | 362.9 | ranked 312 of 1,810 | |
| Share of jobs in services (2024) | 66.5% | 64.9% | 63.6% | ranked 790 of 1,804 | |
| Share of jobs in industry and construction (2024) | 29.0% | 30.3% | 24.2% | ranked 664 of 1,776 |
Society
| Indicator | Jonschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 14.4% | 27.2% | 18.9% | ranked 1,237 of 1,811 |
Sunshine and temperatures: Jonschwil
Frequently asked questions
What is the population of Jonschwil?
Jonschwil has 3,979 residents (2025), ranking 558 of 2,115 municipalities.
How big is Jonschwil?
Jonschwil covers 11.0 km², with a density of 362 people per km².
Is the population of Jonschwil growing?
Between 2015 and 2025, the population of Jonschwil went from 3,767 to 3,979, a change of +5.6%.
Where is Jonschwil?
Jonschwil is in St. Gallen. It belongs to Wahlkreis Wil (district). Latitude 47.428, longitude 9.088.
Installed photovoltaic capacity per 1,000 inhabitants: what is the figure for Jonschwil?
In Jonschwil, “Installed photovoltaic capacity per 1,000 inhabitants” stands at 2,733 kW (2026), ranking 76 of 1,806 municipalities; the national median is 1,134 kW.
Share of single-family houses among residential buildings: what is the figure for Jonschwil?
In Jonschwil, “Share of single-family houses among residential buildings” stands at 78.4% (2026), ranking 304 of 1,806 municipalities; the national median is 69.5%.
How much electricity does a solar panel produce in Jonschwil?
In Jonschwil, a 1 kWp south-facing system tilted at 38° produces about 1,132 kWh a year.
Which municipalities border Jonschwil?
The nearest to Jonschwil are Oberuzwil (2.6 km), Rickenbach (TG) (3.8 km), Lütisburg (3.8 km), Uzwil (4.1 km), Wilen (TG) (4.8 km).