Lengnau (BE): population and statistics
Lengnau (BE) has a population of 5,808 (2025) across 7.3 km², or 796 people per km². It ranks 359 of 2,115 municipalities by population. Its population is growing: +17.2% between 2015 and 2025.
- 5,808 residents
- 7.3 km²
- 796 people/km²
- 438 m
Key points
Among the 335 municipalities in Bern, Lengnau (BE) ranks No. 34 by population.
Oil or gas heating systems: 75.9% in Lengnau (BE), compared with an average of 60.7% in Bern and 61.7% nationally.
Share of jobs in industry and construction: 42.6% in Lengnau (BE), compared with an average of 22.5% in Bern and 22.0% nationally.
A 1 kWp solar panel tilted at 37° generates about 1,225 kWh a year here.
Lengnau (BE) in numbers
Where is Lengnau (BE)?
Population of Lengnau (BE) over time
Lengnau (BE) had 4,956 residents in 2015 and 5,808 in 2025.
| Year | Population |
|---|---|
| 2020 | 5,316 |
| 2021 | 5,441 |
| 2022 | 5,595 |
| 2023 | 5,708 |
| 2024 | 5,798 |
| 2025 | 5,808 |
Did you know?
- “Oil or gas heating systems”: higher than in 90% of municipalities.
- Its area is roughly equal to 1,022 football pitches.
- Its population density is 3.4 times the national average.
- The nearest municipality is Romont (BE), 2.1 km away.
- The nearest more populous municipality is Grenchen (18,973 residents), 2.5 km away.
- A 4 kWp rooftop solar system here would generate about 4,900 kWh a year, roughly what an average household uses.
All indicators for Lengnau (BE)
Value for the municipality, then the regional average and the national median (for counts: regional and national totals). The gauge places the municipality between the lowest and highest value in the country.
Population
| Indicator | Lengnau (BE) | Bern | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 22.6% | 22.7% | 20.7% | ranked 600 of 1,811 |
Housing
| Indicator | Lengnau (BE) | Bern | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 2,904 | 599,633 | 4,927,050 | ranked 390 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 16.2% | 29.0% | 23.3% | ranked 1,294 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 21.1% | 17.2% | 25.3% | ranked 1,180 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 66.4% | 54.1% | 69.5% | ranked 1,073 of 1,806 |
Energy
| Indicator | Lengnau (BE) | Bern | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 75.9% | 60.7% | 53.5% | ranked 187 of 1,806 | |
| Heat pumps as main heating (2026) | 12.5% | 14.3% | 13.7% | ranked 999 of 1,806 | |
| Wood heating systems (2026) | 2.9% | 14.7% | 12.4% | ranked 1,623 of 1,806 | |
| District heating (2026) | 6.0% | 5.7% | 1.4% | ranked 403 of 1,806 | |
| Photovoltaic installations (2026) | 177 | 40,598 | 329,600 | ranked 615 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 644.9 kW | 999.1 kW | 1,134 kW | ranked 1,538 of 1,806 | |
| Rooftop solar electricity potential (2026) | 38.2 GWh/year | 9,185 GWh/year | 64,783 GWh/year | ranked 498 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 6,586 kWh/inh. | 8,535 kWh/inh. | 9,356 kWh/inh. | ranked 1,451 of 1,810 |
Economy
| Indicator | Lengnau (BE) | Bern | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 277 | 80,971 | 728,011 | ranked 545 of 2,112 | |
| Entities listed in the commercial register (2026) | 356 | 67,347 | 762,757 | ranked 426 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 61.3 | 62.6 | 64.9 | ranked 1,053 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 65.4% | 64.8% | 65.7% | ranked 930 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 32.3% | 29.2% | 29.0% | ranked 626 of 1,808 |
Employment
| Indicator | Lengnau (BE) | Bern | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 1,876 | 677,492 | 5,679,518 | ranked 494 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 323.0 | 629.6 | 362.9 | ranked 1,064 of 1,810 | |
| Share of jobs in services (2024) | 55.7% | 70.3% | 63.6% | ranked 1,172 of 1,804 | |
| Share of jobs in industry and construction (2024) | 42.6% | 22.5% | 24.2% | ranked 243 of 1,776 |
Society
| Indicator | Lengnau (BE) | Bern | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 30.4% | 18.6% | 18.9% | ranked 284 of 1,811 |
Sunshine and temperatures: Lengnau (BE)
Frequently asked questions
What is the population of Lengnau (BE)?
Lengnau (BE) has 5,808 residents (2025), ranking 359 of 2,115 municipalities.
How big is Lengnau (BE)?
Lengnau (BE) covers 7.3 km², with a density of 796 people per km².
Is the population of Lengnau (BE) growing?
Between 2015 and 2025, the population of Lengnau (BE) went from 4,956 to 5,808, a change of +17.2%.
Where is Lengnau (BE)?
Lengnau (BE) is in Bern. It belongs to Verwaltungskreis Biel/Bienne (district). Latitude 47.182, longitude 7.367.
Oil or gas heating systems: what is the figure for Lengnau (BE)?
In Lengnau (BE), “Oil or gas heating systems” stands at 75.9% (2026), ranking 187 of 1,806 municipalities; the national median is 53.5%.
Share of jobs in industry and construction: what is the figure for Lengnau (BE)?
In Lengnau (BE), “Share of jobs in industry and construction” stands at 42.6% (2024), ranking 243 of 1,776 municipalities; the national median is 24.2%.
How much electricity does a solar panel produce in Lengnau (BE)?
In Lengnau (BE), a 1 kWp south-facing system tilted at 37° produces about 1,225 kWh a year.
Which municipalities border Lengnau (BE)?
The nearest to Lengnau (BE) are Romont (BE) (2.1 km), Pieterlen (2.2 km), Grenchen (2.5 km), Meinisberg (2.9 km), Rüti bei Büren (4.4 km).