Postcode area · Altstätten · St. Gallen
The postcode areas of Altstätten in numbers
Altstätten has 2 postcode areas and 11,759 residents in 2025, with population, density and indicators for each.
- 2 postcode areas
- 11,759 residents
List of postcode areas in Altstätten
Click a column heading to sort the table.
| Postcode area | Population | Population density | Area | Share of foreign nationals | Dwellings |
|---|---|---|---|---|---|
| 9450 Altstätten SG | 11,759 | 416.5 people/km² | 28.2 km² | 33.9% | 6,193 |
| 9452 Hinterforst | – | – | 3.5 km² | 13.5% | 446 |
Frequently asked questions
How many postcode areas does Altstätten have?
Altstätten has 2 postcode areas. Largest by population: 9450 Altstätten SG (11,759 residents).