9423 Altenrhein (Thal): key figures
9423 Altenrhein (postcode area in Thal) has 997 residents in 2025 across 14.3 km², or 69.8 people per km². By population, 9423 Altenrhein ranks No. 3 of 3 postcode areas in Thal. Population: +18.1% between 2015 and 2025.
- 997 residents
- 14.3 km²
- 70 people/km²
9423 Altenrhein in numbers
Key points
By population, 9423 Altenrhein ranks No. 3 of 3 postcode areas in Thal.
Nationally, 9423 Altenrhein ranks No. 1,607 of 2,275 postcode areas.
Population of 9423 Altenrhein over time
9423 Altenrhein had 844 residents in 2015 and 997 in 2025.
| Year | Population |
|---|---|
| 2015 | 844 |
| 2020 | 818 |
| 2023 | 996 |
| 2025 | 997 |
All indicators for 9423 Altenrhein
Next to the value for 9423 Altenrhein: all postcode areas of Thal, then of the whole country (totals for counts, weighted averages for rates).
Housing
| Indicator | 9423 Altenrhein | Thal | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Dwellings (2026) | 523 | – | – | ranked 3 of 3 | ranked 1,837 of 3,164 | |
| Residential buildings (2026) | 254 | – | – | ranked 3 of 3 | ranked 2,056 of 3,160 | |
| Dwellings in buildings built before 1946 (2026) | 9.9% | 22.5% | 23.2% | ranked 3 of 3 | ranked 2,886 of 3,164 | |
| Dwellings in buildings built since 2001 (2026) | 27.7% | 27.2% | 23.6% | ranked 2 of 3 | ranked 993 of 3,164 | |
| Share of detached houses among residential buildings (2026) | 77.6% | 74.3% | 63.5% | ranked 1 of 3 | ranked 762 of 3,160 |
Energy
| Indicator | 9423 Altenrhein | Thal | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 52.0% | 59.9% | 56.2% | ranked 3 of 3 | ranked 1,420 of 3,160 | |
| Heat pumps as main heating (2026) | 39.4% | 31.3% | 16.2% | ranked 1 of 3 | ranked 142 of 3,160 | |
| Wood heating systems (2026) | 2.8% | 3.9% | 13.5% | ranked 2 of 3 | ranked 2,851 of 3,160 | |
| District heating (2026) | 2.4% | 3.4% | 5.6% | ranked 2 of 3 | ranked 1,029 of 3,160 |
Society
| Indicator | 9423 Altenrhein | Thal | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 28.0% | 26.5% | 29.8% | ranked 2 of 3 | ranked 569 of 2,040 |
Where is 9423 Altenrhein?
Other postcode areas in Thal
Postcode areas near 9423 Altenrhein
- 9422 Staad SG3,016 residents
- 9425 Thal3,311 residents
- 9405 Wienacht-TobelLutzenberg
- 9424 RheineckRheineck
- 9426 LutzenbergLutzenberg
- 9427 WolfhaldenWolfhalden
Previous in alphabetical order: 9422 Staad SG
Next in alphabetical order: 9425 Thal
Frequently asked questions
What is the population of 9423 Altenrhein (Thal)?
9423 Altenrhein has 997 residents in 2025. It covers 14.3 km², or 70 people per km².
Where is 9423 Altenrhein?
9423 Altenrhein (postcode area) is part of Thal, in St. Gallen.
What is the value of “Share of foreign nationals” in 9423 Altenrhein?
Share of foreign nationals: 28.0% (2025), ranked 569 of 2,040 postcode areas in the country.
What is the value of “Dwellings” in 9423 Altenrhein?
Dwellings: 523 (2026), ranked 1,837 of 3,164 postcode areas in the country.