4051 Basel (Basel): key figures
4051 Basel (postcode area in Basel) has 9,645 residents in 2025 across 1.5 km², or 6,561 people per km². By population, 4051 Basel ranks No. 8 of 11 postcode areas in Basel. Population: +5.4% between 2015 and 2025.
- 9,645 residents
- 1.5 km²
- 6,561 people/km²
4051 Basel in numbers
Key points
By population, 4051 Basel ranks No. 8 of 11 postcode areas in Basel.
Nationally, 4051 Basel ranks No. 222 of 2,275 postcode areas.
Population of 4051 Basel over time
4051 Basel had 9,147 residents in 2015 and 9,645 in 2025.
| Year | Population |
|---|---|
| 2015 | 9,147 |
| 2020 | 9,502 |
| 2023 | 9,639 |
| 2025 | 9,645 |
All indicators for 4051 Basel
Next to the value for 4051 Basel: all postcode areas of Basel, then of the whole country (totals for counts, weighted averages for rates).
Housing
| Indicator | 4051 Basel | Basel | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Dwellings (2026) | 6,580 | – | – | ranked 8 of 10 | ranked 148 of 3,164 | |
| Residential buildings (2026) | 1,221 | – | – | ranked 9 of 10 | ranked 305 of 3,160 | |
| Dwellings in buildings built before 1946 (2026) | 43.0% | 37.1% | 23.2% | ranked 3 of 10 | ranked 763 of 3,164 | |
| Dwellings in buildings built since 2001 (2026) | 3.4% | 8.8% | 23.6% | ranked 9 of 10 | ranked 3,033 of 3,164 | |
| Share of detached houses among residential buildings (2026) | 31.4% | 36.5% | 63.5% | ranked 4 of 10 | ranked 3,072 of 3,160 |
Energy
| Indicator | 4051 Basel | Basel | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 27.5% | 43.6% | 56.2% | ranked 6 of 10 | ranked 2,669 of 3,160 | |
| Heat pumps as main heating (2026) | 1.5% | 8.6% | 16.2% | ranked 10 of 10 | ranked 3,057 of 3,160 | |
| Wood heating systems (2026) | 0.3% | 1.2% | 13.5% | ranked 10 of 10 | ranked 3,142 of 3,160 | |
| District heating (2026) | 69.5% | 45.9% | 5.6% | ranked 4 of 10 | ranked 9 of 3,160 |
Society
| Indicator | 4051 Basel | Basel | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 39.0% | 40.5% | 29.8% | ranked 8 of 11 | ranked 153 of 2,040 |
Where is 4051 Basel?
Other postcode areas in Basel
- 4058 Basel27,959 residents
- 4057 Basel26,346 residents
- 4055 Basel23,861 residents
- 4052 Basel22,713 residents
- 4053 Basel21,584 residents
- 4056 Basel21,329 residents
- 4054 Basel19,259 residents
- 4059 Basel6,912 residents
Postcode areas near 4051 Basel
- 4001 Basel208 residents
- 4031 Basel253 residents
- 4055 Basel23,861 residents
- 4054 Basel19,259 residents
- 4056 Basel21,329 residents
- 4053 Basel21,584 residents
Previous in alphabetical order: 4031 Basel
Next in alphabetical order: 4052 Basel
Frequently asked questions
What is the population of 4051 Basel (Basel)?
4051 Basel has 9,645 residents in 2025. It covers 1.5 km², or 6,561 people per km².
Where is 4051 Basel?
4051 Basel (postcode area) is part of Basel, in Basel-Stadt.
What is the value of “Share of foreign nationals” in 4051 Basel?
Share of foreign nationals: 39.0% (2025), ranked 153 of 2,040 postcode areas in the country.
What is the value of “Dwellings” in 4051 Basel?
Dwellings: 6,580 (2026), ranked 148 of 3,164 postcode areas in the country.