Sennwald: population and statistics
Sennwald has a population of 6,428 (2025) across 41.6 km², or 155 people per km². It ranks 320 of 2,115 municipalities by population. Its population is growing: +22.3% between 2015 and 2025.
- 6,428 residents
- 41.6 km²
- 155 people/km²
- 529 m
Key points
Among the 75 municipalities in St. Gallen, Sennwald ranks No. 30 by population.
Share of jobs in industry and construction: 63.3% in Sennwald, compared with an average of 30.3% in St. Gallen and 22.0% nationally.
Heat pumps as main heating: 40.4% in Sennwald, compared with an average of 30.7% in St. Gallen and 15.5% nationally.
A 1 kWp solar panel tilted at 40° generates about 1,203 kWh a year here.
Sennwald in numbers
Where is Sennwald?
Population of Sennwald over time
Sennwald had 5,256 residents in 2015 and 6,428 in 2025.
| Year | Population |
|---|---|
| 2020 | 5,709 |
| 2021 | 5,925 |
| 2022 | 6,101 |
| 2023 | 6,269 |
| 2024 | 6,332 |
| 2025 | 6,428 |
Did you know?
- Number 1 in St. Gallen for “Population change over 10 years”.
- “Share of jobs in industry and construction”: higher than in 98% of municipalities.
- “Heat pumps as main heating”: higher than in 96% of municipalities.
- “Share of foreign nationals”: higher than in 93% of municipalities.
- Its area is roughly equal to 5,821 football pitches.
- The nearest municipality is Rüthi (SG), 4.3 km away.
- The nearest more populous municipality is Buchs (SG) (14,287 residents), 11 km away.
All indicators for Sennwald
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 | Sennwald | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 17.1% | 19.9% | 20.7% | ranked 1,498 of 1,811 |
Housing
| Indicator | Sennwald | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 3,305 | 280,853 | 4,927,050 | ranked 323 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 19.4% | 23.5% | 23.3% | ranked 1,089 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 34.8% | 24.8% | 25.3% | ranked 347 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 75.5% | 64.1% | 69.5% | ranked 502 of 1,806 |
Energy
| Indicator | Sennwald | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 39.7% | 52.2% | 53.5% | ranked 1,384 of 1,806 | |
| Heat pumps as main heating (2026) | 40.4% | 30.7% | 13.7% | ranked 70 of 1,806 | |
| Wood heating systems (2026) | 17.1% | 9.0% | 12.4% | ranked 667 of 1,806 | |
| District heating (2026) | 0.1% | 6.0% | 1.4% | ranked 1,504 of 1,806 | |
| Photovoltaic installations (2026) | 472 | 26,111 | 329,600 | ranked 93 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 2,808 kW | 1,325 kW | 1,134 kW | ranked 66 of 1,806 | |
| Rooftop solar electricity potential (2026) | 90.3 GWh/year | 4,072 GWh/year | 64,783 GWh/year | ranked 110 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 14,045 kWh/inh. | 7,485 kWh/inh. | 9,356 kWh/inh. | ranked 326 of 1,810 |
Economy
| Indicator | Sennwald | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 418 | 39,699 | 728,011 | ranked 335 of 2,112 | |
| Entities listed in the commercial register (2026) | 450 | 42,658 | 762,757 | ranked 319 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 70.0 | 78.4 | 64.9 | ranked 705 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 59.3% | 65.2% | 65.7% | ranked 1,424 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 33.3% | 29.2% | 29.0% | ranked 525 of 1,808 |
Employment
| Indicator | Sennwald | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 4,614 | 317,461 | 5,679,518 | ranked 209 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 717.8 | 583.5 | 362.9 | ranked 193 of 1,810 | |
| Share of jobs in services (2024) | 32.4% | 64.9% | 63.6% | ranked 1,728 of 1,804 | |
| Share of jobs in industry and construction (2024) | 63.3% | 30.3% | 24.2% | ranked 32 of 1,776 |
Society
| Indicator | Sennwald | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 36.7% | 27.2% | 18.9% | ranked 120 of 1,811 |
Sunshine and temperatures: Sennwald
Frequently asked questions
What is the population of Sennwald?
Sennwald has 6,428 residents (2025), ranking 320 of 2,115 municipalities.
How big is Sennwald?
Sennwald covers 41.6 km², with a density of 155 people per km².
Is the population of Sennwald growing?
Between 2015 and 2025, the population of Sennwald went from 5,256 to 6,428, a change of +22.3%.
Where is Sennwald?
Sennwald is in St. Gallen. It belongs to Wahlkreis Werdenberg (district). Latitude 47.266, longitude 9.500.
Share of jobs in industry and construction: what is the figure for Sennwald?
In Sennwald, “Share of jobs in industry and construction” stands at 63.3% (2024), ranking 32 of 1,776 municipalities; the national median is 24.2%.
Heat pumps as main heating: what is the figure for Sennwald?
In Sennwald, “Heat pumps as main heating” stands at 40.4% (2026), ranking 70 of 1,806 municipalities; the national median is 13.7%.
How much electricity does a solar panel produce in Sennwald?
In Sennwald, a 1 kWp south-facing system tilted at 40° produces about 1,203 kWh a year.
Which municipalities border Sennwald?
The nearest to Sennwald are Rüthi (SG) (4.3 km), Oberriet (SG) (7.5 km), Schwende-Rüte (8.0 km), Eichberg (8.8 km), Gams (8.9 km).