4123 Allschwil (Allschwil): key figures
4123 Allschwil (postcode area in Allschwil) has 21,987 residents in 2025 across 8.9 km², or 2,473 people per km². Population: +9.5% between 2015 and 2025.
- 21,987 residents
- 8.9 km²
- 2,473 people/km²
4123 Allschwil in numbers
Key points
Nationally, 4123 Allschwil ranks No. 47 of 2,275 postcode areas.
Population of 4123 Allschwil over time
4123 Allschwil had 20,077 residents in 2015 and 21,987 in 2025.
| Year | Population |
|---|---|
| 2015 | 20,077 |
| 2020 | 21,045 |
| 2023 | 21,707 |
| 2025 | 21,987 |
All indicators for 4123 Allschwil
Next to the value for 4123 Allschwil: all postcode areas of Allschwil, then of the whole country (totals for counts, weighted averages for rates).
Housing
| Indicator | 4123 Allschwil | Allschwil | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Dwellings (2026) | 11,612 | – | – | ranked 50 of 3,164 | ||
| Residential buildings (2026) | 3,472 | – | – | ranked 11 of 3,160 | ||
| Dwellings in buildings built before 1946 (2026) | 14.8% | 14.8% | 23.2% | ranked 2,556 of 3,164 | ||
| Dwellings in buildings built since 2001 (2026) | 21.8% | 21.8% | 23.6% | ranked 1,551 of 3,164 | ||
| Share of detached houses among residential buildings (2026) | 60.7% | 60.7% | 63.5% | ranked 2,321 of 3,160 |
Energy
| Indicator | 4123 Allschwil | Allschwil | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 79.7% | 79.7% | 56.2% | ranked 174 of 3,160 | ||
| Heat pumps as main heating (2026) | 10.5% | 10.5% | 16.2% | ranked 1,884 of 3,160 | ||
| Wood heating systems (2026) | 1.3% | 1.3% | 13.5% | ranked 3,028 of 3,160 | ||
| District heating (2026) | 7.3% | 7.3% | 5.6% | ranked 504 of 3,160 |
Society
| Indicator | 4123 Allschwil | Allschwil | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 31.7% | 31.7% | 29.8% | ranked 377 of 2,040 |
Where is 4123 Allschwil?
Postcode areas near 4123 Allschwil
Frequently asked questions
What is the population of 4123 Allschwil (Allschwil)?
4123 Allschwil has 21,987 residents in 2025. It covers 8.9 km², or 2,473 people per km².
Where is 4123 Allschwil?
4123 Allschwil (postcode area) is part of Allschwil, in Basel-Landschaft.
What is the value of “Share of foreign nationals” in 4123 Allschwil?
Share of foreign nationals: 31.7% (2025), ranked 377 of 2,040 postcode areas in the country.
What is the value of “Dwellings” in 4123 Allschwil?
Dwellings: 11,612 (2026), ranked 50 of 3,164 postcode areas in the country.