Sempach: population and statistics
Sempach has a population of 4,404 (2025) across 8.9 km², or 494 people per km². It ranks 514 of 2,115 municipalities by population. Its population is growing: +5.9% between 2015 and 2025.
- 4,404 residents
- 8.9 km²
- 494 people/km²
- 526 m
Key points
Among the 79 municipalities in Lucerne, Sempach ranks No. 27 by population.
Heat pumps as main heating: 50.8% in Sempach, compared with an average of 25.3% in Lucerne and 15.5% nationally.
Share of foreign nationals: 9.9% in Sempach, compared with an average of 21.9% in Lucerne and 27.7% nationally.
A 1 kWp solar panel tilted at 38° generates about 1,147 kWh a year here.
Sempach in numbers
Where is Sempach?
Population of Sempach over time
Sempach had 4,159 residents in 2015 and 4,404 in 2025.
| Year | Population |
|---|---|
| 2020 | 4,234 |
| 2021 | 4,186 |
| 2022 | 4,131 |
| 2023 | 4,160 |
| 2024 | 4,380 |
| 2025 | 4,404 |
Did you know?
- Number 1 in Lucerne for “Heat pumps as main heating”.
- “Heat pumps as main heating”: higher than in 99% of municipalities.
- Its area is roughly equal to 1,248 football pitches.
- Its population density is 2.1 times the national average.
- The nearest municipality is Eich, 2.8 km away.
- The nearest more populous municipality is Neuenkirch (7,243 residents), 3.7 km away.
- A 4 kWp rooftop solar system here would generate about 4,588 kWh a year, roughly what an average household uses.
All indicators for Sempach
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 | Sempach | Lucerne | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 20.9% | 19.4% | 20.7% | ranked 868 of 1,811 |
Housing
| Indicator | Sempach | Lucerne | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 1,991 | 219,035 | 4,927,050 | ranked 607 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 11.9% | 16.6% | 23.3% | ranked 1,522 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 31.5% | 29.3% | 25.3% | ranked 513 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 55.7% | 49.1% | 69.5% | ranked 1,513 of 1,806 |
Energy
| Indicator | Sempach | Lucerne | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 27.2% | 49.7% | 53.5% | ranked 1,679 of 1,806 | |
| Heat pumps as main heating (2026) | 50.8% | 25.3% | 13.7% | ranked 14 of 1,806 | |
| Wood heating systems (2026) | 8.4% | 13.2% | 12.4% | ranked 1,167 of 1,806 | |
| District heating (2026) | 10.0% | 6.7% | 1.4% | ranked 233 of 1,806 | |
| Photovoltaic installations (2026) | 201 | 16,268 | 329,600 | ranked 509 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,470 kW | 1,343 kW | 1,134 kW | ranked 562 of 1,806 | |
| Rooftop solar electricity potential (2026) | 34.3 GWh/year | 3,326 GWh/year | 64,783 GWh/year | ranked 583 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 7,797 kWh/inh. | 7,532 kWh/inh. | 9,356 kWh/inh. | ranked 1,222 of 1,810 |
Economy
| Indicator | Sempach | Lucerne | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 324 | 34,265 | 728,011 | ranked 455 of 2,112 | |
| Entities listed in the commercial register (2026) | 325 | 34,626 | 762,757 | ranked 460 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 73.8 | 78.4 | 64.9 | ranked 605 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 73.8% | 74.5% | 65.7% | ranked 262 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 21.8% | 20.6% | 29.0% | ranked 1,491 of 1,808 |
Employment
| Indicator | Sempach | Lucerne | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 2,081 | 273,970 | 5,679,518 | ranked 449 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 472.5 | 620.6 | 362.9 | ranked 554 of 1,810 | |
| Share of jobs in services (2024) | 63.0% | 69.3% | 63.6% | ranked 921 of 1,804 | |
| Share of jobs in industry and construction (2024) | 32.0% | 24.2% | 24.2% | ranked 552 of 1,776 |
Society
| Indicator | Sempach | Lucerne | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 9.9% | 21.9% | 18.9% | ranked 1,531 of 1,811 |
Sunshine and temperatures: Sempach
Frequently asked questions
What is the population of Sempach?
Sempach has 4,404 residents (2025), ranking 514 of 2,115 municipalities.
How big is Sempach?
Sempach covers 8.9 km², with a density of 494 people per km².
Is the population of Sempach growing?
Between 2015 and 2025, the population of Sempach went from 4,159 to 4,404, a change of +5.9%.
Where is Sempach?
Sempach is in Lucerne. It belongs to Wahlkreis Sursee (district). Latitude 47.133, longitude 8.194.
Heat pumps as main heating: what is the figure for Sempach?
In Sempach, “Heat pumps as main heating” stands at 50.8% (2026), ranking 14 of 1,806 municipalities; the national median is 13.7%.
Share of foreign nationals: what is the figure for Sempach?
In Sempach, “Share of foreign nationals” stands at 9.9% (2025), ranking 1,531 of 1,811 municipalities; the national median is 18.9%.
How much electricity does a solar panel produce in Sempach?
In Sempach, a 1 kWp south-facing system tilted at 38° produces about 1,147 kWh a year.
Which municipalities border Sempach?
The nearest to Sempach are Eich (2.8 km), Hildisrieden (3.3 km), Neuenkirch (3.7 km), Nottwil (4.3 km), Rain (4.8 km).