Widnau: population and statistics
Widnau has a population of 10,485 (2025) across 4.2 km², or 2,485 people per km². It ranks 170 of 2,115 municipalities by population. Its population is growing: +12.4% between 2015 and 2025.
- 10,485 residents
- 4.2 km²
- 2,485 people/km²
- 401 m
Key points
Among the 75 municipalities in St. Gallen, Widnau ranks No. 9 by population.
District heating: 0.0% in Widnau, compared with an average of 6.0% in St. Gallen and 7.3% nationally.
A 1 kWp solar panel tilted at 40° generates about 1,188 kWh a year here.
Widnau in numbers
Where is Widnau?
Population of Widnau over time
Widnau had 9,329 residents in 2015 and 10,485 in 2025.
| Year | Population |
|---|---|
| 2020 | 9,932 |
| 2021 | 10,095 |
| 2022 | 10,178 |
| 2023 | 10,337 |
| 2024 | 10,409 |
| 2025 | 10,485 |
Did you know?
- “District heating”: lower than in 99% of municipalities.
- “Entities listed in the commercial register”: higher than in 94% of municipalities.
- “Jobs”: higher than in 92% of municipalities.
- Its area is roughly equal to 591 football pitches.
- Its population density is 10.7 times the national average.
- The nearest municipality is Diepoldsau, 2.2 km away.
- The nearest more populous municipality is St. Gallen (79,487 residents), 19 km away.
All indicators for Widnau
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 | Widnau | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 17.6% | 19.9% | 20.7% | ranked 1,441 of 1,811 |
Housing
| Indicator | Widnau | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 4,840 | 280,853 | 4,927,050 | ranked 206 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 9.9% | 23.5% | 23.3% | ranked 1,611 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 39.3% | 24.8% | 25.3% | ranked 181 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 79.5% | 64.1% | 69.5% | ranked 244 of 1,806 |
Energy
| Indicator | Widnau | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 61.6% | 52.2% | 53.5% | ranked 637 of 1,806 | |
| Heat pumps as main heating (2026) | 36.8% | 30.7% | 13.7% | ranked 121 of 1,806 | |
| Wood heating systems (2026) | 1.3% | 9.0% | 12.4% | ranked 1,752 of 1,806 | |
| District heating (2026) | 0.0% | 6.0% | 1.4% | ranked 1,506 of 1,806 | |
| Photovoltaic installations (2026) | 658 | 26,111 | 329,600 | ranked 45 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,037 kW | 1,325 kW | 1,134 kW | ranked 1,047 of 1,806 | |
| Rooftop solar electricity potential (2026) | 75.8 GWh/year | 4,072 GWh/year | 64,783 GWh/year | ranked 161 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 7,227 kWh/inh. | 7,485 kWh/inh. | 9,356 kWh/inh. | ranked 1,342 of 1,810 |
Economy
| Indicator | Widnau | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 690 | 39,699 | 728,011 | ranked 187 of 2,112 | |
| Entities listed in the commercial register (2026) | 1,046 | 42,658 | 762,757 | ranked 123 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 99.8 | 78.4 | 64.9 | ranked 201 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 72.6% | 65.2% | 65.7% | ranked 335 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 24.7% | 29.2% | 29.0% | ranked 1,291 of 1,808 |
Employment
| Indicator | Widnau | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 5,280 | 317,461 | 5,679,518 | ranked 180 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 503.6 | 583.5 | 362.9 | ranked 481 of 1,810 | |
| Share of jobs in services (2024) | 67.9% | 64.9% | 63.6% | ranked 733 of 1,804 | |
| Share of jobs in industry and construction (2024) | 31.9% | 30.3% | 24.2% | ranked 556 of 1,776 |
Society
| Indicator | Widnau | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 29.5% | 27.2% | 18.9% | ranked 317 of 1,811 |
Sunshine and temperatures: Widnau
Frequently asked questions
What is the population of Widnau?
Widnau has 10,485 residents (2025), ranking 170 of 2,115 municipalities.
How big is Widnau?
Widnau covers 4.2 km², with a density of 2,485 people per km².
Is the population of Widnau growing?
Between 2015 and 2025, the population of Widnau went from 9,329 to 10,485, a change of +12.4%.
Where is Widnau?
Widnau is in St. Gallen. It belongs to Wahlkreis Rheintal (district). Latitude 47.400, longitude 9.633.
District heating: what is the figure for Widnau?
In Widnau, “District heating” stands at 0.0% (2026), ranking 1,506 of 1,806 municipalities; the national median is 1.4%.
Entities listed in the commercial register: what is the figure for Widnau?
In Widnau, “Entities listed in the commercial register” stands at 1,046 (2026), ranking 123 of 2,115 municipalities; the national median is 118.
How much electricity does a solar panel produce in Widnau?
In Widnau, a 1 kWp south-facing system tilted at 40° produces about 1,188 kWh a year.
Which municipalities border Widnau?
The nearest to Widnau are Diepoldsau (2.2 km), Balgach (2.5 km), Berneck (3.2 km), Au (SG) (3.7 km), Rebstein (3.8 km).