Niederhelfenschwil: population and statistics
Niederhelfenschwil has a population of 3,309 (2025) across 16.3 km², or 202 people per km². It ranks 670 of 2,115 municipalities by population. Its population is growing: +10.0% between 2015 and 2025.
- 3,309 residents
- 16.3 km²
- 202 people/km²
- 566 m
Key points
Among the 75 municipalities in St. Gallen, Niederhelfenschwil ranks No. 55 by population.
Installed photovoltaic capacity per 1,000 inhabitants: 3,101 kW in Niederhelfenschwil, compared with an average of 1,325 kW in St. Gallen and 919.4 kW nationally.
Share of foreign nationals: 9.3% in Niederhelfenschwil, compared with an average of 27.2% in St. Gallen and 27.7% nationally.
A 1 kWp solar panel tilted at 38° generates about 1,145 kWh a year here.
Niederhelfenschwil in numbers
Where is Niederhelfenschwil?
Population of Niederhelfenschwil over time
Niederhelfenschwil had 3,008 residents in 2015 and 3,309 in 2025.
| Year | Population |
|---|---|
| 2020 | 3,181 |
| 2021 | 3,182 |
| 2022 | 3,201 |
| 2023 | 3,256 |
| 2024 | 3,290 |
| 2025 | 3,309 |
Did you know?
- “Installed photovoltaic capacity per 1,000 inhabitants”: higher than in 98% of municipalities.
- Its area is roughly equal to 2,289 football pitches.
- The nearest municipality is Niederbüren, 2.3 km away.
- The nearest more populous municipality is Bischofszell (6,438 residents), 4.2 km away.
- A 4 kWp rooftop solar system here would generate about 4,580 kWh a year, roughly what an average household uses.
All indicators for Niederhelfenschwil
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 | Niederhelfenschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 16.6% | 19.9% | 20.7% | ranked 1,560 of 1,811 |
Housing
| Indicator | Niederhelfenschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 1,382 | 280,853 | 4,927,050 | ranked 831 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 19.6% | 23.5% | 23.3% | ranked 1,079 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 35.0% | 24.8% | 25.3% | ranked 334 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 79.8% | 64.1% | 69.5% | ranked 228 of 1,806 |
Energy
| Indicator | Niederhelfenschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 50.7% | 52.2% | 53.5% | ranked 1,008 of 1,806 | |
| Heat pumps as main heating (2026) | 37.2% | 30.7% | 13.7% | ranked 117 of 1,806 | |
| Wood heating systems (2026) | 11.2% | 9.0% | 12.4% | ranked 971 of 1,806 | |
| District heating (2026) | 0.1% | 6.0% | 1.4% | ranked 1,483 of 1,806 | |
| Photovoltaic installations (2026) | 331 | 26,111 | 329,600 | ranked 231 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 3,101 kW | 1,325 kW | 1,134 kW | ranked 40 of 1,806 | |
| Rooftop solar electricity potential (2026) | 38.2 GWh/year | 4,072 GWh/year | 64,783 GWh/year | ranked 499 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 11,556 kWh/inh. | 7,485 kWh/inh. | 9,356 kWh/inh. | ranked 574 of 1,810 |
Economy
| Indicator | Niederhelfenschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 247 | 39,699 | 728,011 | ranked 624 of 2,112 | |
| Entities listed in the commercial register (2026) | 227 | 42,658 | 762,757 | ranked 664 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 68.6 | 78.4 | 64.9 | ranked 763 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 67.0% | 65.2% | 65.7% | ranked 781 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 28.2% | 29.2% | 29.0% | ranked 980 of 1,808 |
Employment
| Indicator | Niederhelfenschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 953 | 317,461 | 5,679,518 | ranked 852 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 288.0 | 583.5 | 362.9 | ranked 1,216 of 1,810 | |
| Share of jobs in services (2024) | 49.1% | 64.9% | 63.6% | ranked 1,376 of 1,804 | |
| Share of jobs in industry and construction (2024) | 27.8% | 30.3% | 24.2% | ranked 725 of 1,776 |
Society
| Indicator | Niederhelfenschwil | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 9.3% | 27.2% | 18.9% | ranked 1,575 of 1,811 |
Sunshine and temperatures: Niederhelfenschwil
Frequently asked questions
What is the population of Niederhelfenschwil?
Niederhelfenschwil has 3,309 residents (2025), ranking 670 of 2,115 municipalities.
How big is Niederhelfenschwil?
Niederhelfenschwil covers 16.3 km², with a density of 202 people per km².
Is the population of Niederhelfenschwil growing?
Between 2015 and 2025, the population of Niederhelfenschwil went from 3,008 to 3,309, a change of +10.0%.
Where is Niederhelfenschwil?
Niederhelfenschwil is in St. Gallen. It belongs to Wahlkreis Wil (district). Latitude 47.483, longitude 9.183.
Installed photovoltaic capacity per 1,000 inhabitants: what is the figure for Niederhelfenschwil?
In Niederhelfenschwil, “Installed photovoltaic capacity per 1,000 inhabitants” stands at 3,101 kW (2026), ranking 40 of 1,806 municipalities; the national median is 1,134 kW.
Share of foreign nationals: what is the figure for Niederhelfenschwil?
In Niederhelfenschwil, “Share of foreign nationals” stands at 9.3% (2025), ranking 1,575 of 1,811 municipalities; the national median is 18.9%.
How much electricity does a solar panel produce in Niederhelfenschwil?
In Niederhelfenschwil, a 1 kWp south-facing system tilted at 38° produces about 1,145 kWh a year.
Which municipalities border Niederhelfenschwil?
The nearest to Niederhelfenschwil are Niederbüren (2.3 km), Hohentannen (3.1 km), Kradolf-Schönenberg (3.7 km), Oberbüren (3.9 km), Bischofszell (4.2 km).