Altstätten: population and statistics
Altstätten has a population of 12,788 (2025) across 39.5 km², or 324 people per km². It ranks 122 of 2,115 municipalities by population. Its population is growing: +12.6% between 2015 and 2025.
- 12,788 residents
- 39.5 km²
- 324 people/km²
- 444 m
Key points
Among the 75 municipalities in St. Gallen, Altstätten ranks No. 7 by population.
A 1 kWp solar panel tilted at 39° generates about 1,202 kWh a year here.
Altstätten in numbers
Where is Altstätten?
Population of Altstätten over time
Altstätten had 11,358 residents in 2015 and 12,788 in 2025.
| Year | Population |
|---|---|
| 2020 | 11,938 |
| 2021 | 12,046 |
| 2022 | 12,278 |
| 2023 | 12,456 |
| 2024 | 12,581 |
| 2025 | 12,788 |
Did you know?
- “Photovoltaic installations”: higher than in 99% of municipalities.
- “Establishments”: higher than in 95% of municipalities.
- “Jobs”: higher than in 95% of municipalities.
- Its area is roughly equal to 5,527 football pitches.
- The nearest municipality is Marbach (SG), 2.1 km away.
- The nearest more populous municipality is St. Gallen (79,487 residents), 14 km away.
- A 4 kWp rooftop solar system here would generate about 4,808 kWh a year, roughly what an average household uses.
All indicators for Altstätten
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 | Altstätten | 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 | Altstätten | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 6,710 | 280,853 | 4,927,050 | ranked 124 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 26.4% | 23.5% | 23.3% | ranked 737 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 29.3% | 24.8% | 25.3% | ranked 647 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 77.1% | 64.1% | 69.5% | ranked 409 of 1,806 |
Energy
| Indicator | Altstätten | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 48.9% | 52.2% | 53.5% | ranked 1,072 of 1,806 | |
| Heat pumps as main heating (2026) | 30.1% | 30.7% | 13.7% | ranked 241 of 1,806 | |
| Wood heating systems (2026) | 13.6% | 9.0% | 12.4% | ranked 839 of 1,806 | |
| District heating (2026) | 6.5% | 6.0% | 1.4% | ranked 382 of 1,806 | |
| Photovoltaic installations (2026) | 805 | 26,111 | 329,600 | ranked 22 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 2,121 kW | 1,325 kW | 1,134 kW | ranked 180 of 1,806 | |
| Rooftop solar electricity potential (2026) | 127.0 GWh/year | 4,072 GWh/year | 64,783 GWh/year | ranked 44 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 9,929 kWh/inh. | 7,485 kWh/inh. | 9,356 kWh/inh. | ranked 802 of 1,810 |
Economy
| Indicator | Altstätten | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 1,038 | 39,699 | 728,011 | ranked 108 of 2,112 | |
| Entities listed in the commercial register (2026) | 1,118 | 42,658 | 762,757 | ranked 114 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 87.4 | 78.4 | 64.9 | ranked 325 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 65.5% | 65.2% | 65.7% | ranked 925 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 29.7% | 29.2% | 29.0% | ranked 839 of 1,808 |
Employment
| Indicator | Altstätten | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 7,975 | 317,461 | 5,679,518 | ranked 112 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 623.6 | 583.5 | 362.9 | ranked 283 of 1,810 | |
| Share of jobs in services (2024) | 62.5% | 64.9% | 63.6% | ranked 939 of 1,804 | |
| Share of jobs in industry and construction (2024) | 32.8% | 30.3% | 24.2% | ranked 524 of 1,776 |
Society
| Indicator | Altstätten | St. Gallen | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 31.7% | 27.2% | 18.9% | ranked 230 of 1,811 |
Sunshine and temperatures: Altstätten
Frequently asked questions
What is the population of Altstätten?
Altstätten has 12,788 residents (2025), ranking 122 of 2,115 municipalities.
How big is Altstätten?
Altstätten covers 39.5 km², with a density of 324 people per km².
Is the population of Altstätten growing?
Between 2015 and 2025, the population of Altstätten went from 11,358 to 12,788, a change of +12.6%.
Where is Altstätten?
Altstätten is in St. Gallen. It belongs to Wahlkreis Rheintal (district). Latitude 47.378, longitude 9.549.
Photovoltaic installations: what is the figure for Altstätten?
In Altstätten, “Photovoltaic installations” stands at 805 (2026), ranking 22 of 2,108 municipalities; the national median is 103.
Establishments: what is the figure for Altstätten?
In Altstätten, “Establishments” stands at 1,038 (2024), ranking 108 of 2,112 municipalities; the national median is 131.
How much electricity does a solar panel produce in Altstätten?
In Altstätten, a 1 kWp south-facing system tilted at 39° produces about 1,202 kWh a year.
Which municipalities border Altstätten?
The nearest to Altstätten are Marbach (SG) (2.1 km), Rebstein (3.6 km), Eichberg (4.1 km), Balgach (4.5 km), Oberegg (4.9 km).