Postcode area · Gempen · Solothurn
4145 Gempen (Gempen): key figures
4145 Gempen (postcode area in Gempen) has 860 residents in 2025 across 6.0 km², or 144 people per km². Population: +2.6% between 2015 and 2025.
- 860 residents
- 6.0 km²
- 144 people/km²
4145 Gempen in numbers
Population
860
ranked 1,710 of 2,275
+2.6%between 2015 and 2025
2015–2025
Population density
144people/km²
ranked 1,631 of 2,275
Area
6.0km²
ranked 1,903 of 3,168
Share of foreign nationals
18.4%
ranked 1,236 of 2,040
Dwellings
447
ranked 2,031 of 3,164
Residential buildings
319
ranked 1,736 of 3,160
Dwellings in buildings built before 1946
22.4%
ranked 1,954 of 3,164
Key points
Nationally, 4145 Gempen ranks No. 1,710 of 2,275 postcode areas.
Population of 4145 Gempen over time
Population, 2015–2025
4145 Gempen had 838 residents in 2015 and 860 in 2025.
| Year | Population |
|---|---|
| 2015 | 838 |
| 2020 | 858 |
| 2023 | 879 |
| 2025 | 860 |
All indicators for 4145 Gempen
Next to the value for 4145 Gempen: all postcode areas of Gempen, then of the whole country (totals for counts, weighted averages for rates).
4145 GempenNational medianHover over or tap a bar to see what it shows.
Housing
| Indicator | 4145 Gempen | Gempen | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Dwellings (2026) | 447 | – | – | ranked 2,031 of 3,164 | ||
| Residential buildings (2026) | 319 | – | – | ranked 1,736 of 3,160 | ||
| Dwellings in buildings built before 1946 (2026) | 22.4% | 22.4% | 23.2% | ranked 1,954 of 3,164 | ||
| Dwellings in buildings built since 2001 (2026) | 28.2% | 28.2% | 23.6% | ranked 950 of 3,164 | ||
| Share of detached houses among residential buildings (2026) | 81.5% | 81.5% | 63.5% | ranked 412 of 3,160 |
Energy
| Indicator | 4145 Gempen | Gempen | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 59.0% | 59.0% | 56.2% | ranked 1,048 of 3,160 | ||
| Heat pumps as main heating (2026) | 8.4% | 8.4% | 16.2% | ranked 2,190 of 3,160 | ||
| Wood heating systems (2026) | 24.7% | 24.7% | 13.5% | ranked 1,027 of 3,160 | ||
| District heating (2026) | 4.2% | 4.2% | 5.6% | ranked 761 of 3,160 |
Society
| Indicator | 4145 Gempen | Gempen | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 18.4% | 18.4% | 29.8% | ranked 1,236 of 2,040 |
Where is 4145 Gempen?
Frequently asked questions
What is the population of 4145 Gempen (Gempen)?
4145 Gempen has 860 residents in 2025. It covers 6.0 km², or 144 people per km².
Where is 4145 Gempen?
4145 Gempen (postcode area) is part of Gempen, in Solothurn.
What is the value of “Share of foreign nationals” in 4145 Gempen?
Share of foreign nationals: 18.4% (2025), ranked 1,236 of 2,040 postcode areas in the country.
What is the value of “Dwellings” in 4145 Gempen?
Dwellings: 447 (2026), ranked 2,031 of 3,164 postcode areas in the country.