Postcode area · Olsberg · Aargau
4305 Olsberg (Olsberg): key figures
4305 Olsberg (postcode area in Olsberg) has 401 residents in 2025 across 4.1 km², or 98.3 people per km². Population: +2.0% between 2015 and 2025.
- 401 residents
- 4.1 km²
- 98 people/km²
4305 Olsberg in numbers
Population
401
ranked 2,099 of 2,275
+2.0%between 2015 and 2025
2015–2025
Population density
98people/km²
ranked 1,887 of 2,275
Area
4.1km²
ranked 2,444 of 3,168
Share of foreign nationals
20.7%
ranked 1,045 of 2,040
Dwellings
212
ranked 2,716 of 3,164
Residential buildings
162
ranked 2,529 of 3,160
Dwellings in buildings built before 1946
26.4%
ranked 1,672 of 3,164
Key points
Nationally, 4305 Olsberg ranks No. 2,099 of 2,275 postcode areas.
Population of 4305 Olsberg over time
Population, 2015–2025
4305 Olsberg had 393 residents in 2015 and 401 in 2025.
| Year | Population |
|---|---|
| 2015 | 393 |
| 2020 | 387 |
| 2023 | 400 |
| 2025 | 401 |
All indicators for 4305 Olsberg
Next to the value for 4305 Olsberg: all postcode areas of Olsberg, then of the whole country (totals for counts, weighted averages for rates).
4305 OlsbergNational medianHover over or tap a bar to see what it shows.
Housing
| Indicator | 4305 Olsberg | Olsberg | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Dwellings (2026) | 212 | – | – | ranked 2,716 of 3,164 | ||
| Residential buildings (2026) | 162 | – | – | ranked 2,529 of 3,160 | ||
| Dwellings in buildings built before 1946 (2026) | 26.4% | 26.4% | 23.2% | ranked 1,672 of 3,164 | ||
| Dwellings in buildings built since 2001 (2026) | 21.2% | 21.2% | 23.6% | ranked 1,607 of 3,164 | ||
| Share of detached houses among residential buildings (2026) | 83.3% | 83.3% | 63.5% | ranked 298 of 3,160 |
Energy
| Indicator | 4305 Olsberg | Olsberg | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 48.7% | 48.7% | 56.2% | ranked 1,635 of 3,160 | ||
| Heat pumps as main heating (2026) | 15.0% | 15.0% | 16.2% | ranked 1,315 of 3,160 | ||
| Wood heating systems (2026) | 24.8% | 24.8% | 13.5% | ranked 1,018 of 3,160 | ||
| District heating (2026) | 0.0% | 0.0% | 5.6% | ranked 2,207 of 3,160 |
Society
| Indicator | 4305 Olsberg | Olsberg | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 20.7% | 20.7% | 29.8% | ranked 1,045 of 2,040 |
Where is 4305 Olsberg?
Frequently asked questions
What is the population of 4305 Olsberg (Olsberg)?
4305 Olsberg has 401 residents in 2025. It covers 4.1 km², or 98 people per km².
Where is 4305 Olsberg?
4305 Olsberg (postcode area) is part of Olsberg, in Aargau.
What is the value of “Share of foreign nationals” in 4305 Olsberg?
Share of foreign nationals: 20.7% (2025), ranked 1,045 of 2,040 postcode areas in the country.
What is the value of “Dwellings” in 4305 Olsberg?
Dwellings: 212 (2026), ranked 2,716 of 3,164 postcode areas in the country.