Lachen: population and statistics
Lachen has a population of 9,448 (2025) across 2.4 km², or 3,888 people per km². It ranks 202 of 2,115 municipalities by population. Its population is growing: +11.4% between 2015 and 2025.
- 9,448 residents
- 2.4 km²
- 3,888 people/km²
- 419 m
Key points
Among the 30 municipalities in Schwyz, Lachen ranks No. 8 by population.
Share of limited companies (AG, GmbH) among registered entities: 83.9% in Lachen, compared with an average of 77.3% in Schwyz and 68.6% nationally.
Installed photovoltaic capacity per 1,000 inhabitants: 318.0 kW in Lachen, compared with an average of 900.4 kW in Schwyz and 919.4 kW nationally.
A 1 kWp solar panel tilted at 40° generates about 1,117 kWh a year here.
Lachen in numbers
Where is Lachen?
Population of Lachen over time
Lachen had 8,480 residents in 2015 and 9,448 in 2025.
| Year | Population |
|---|---|
| 2020 | 9,137 |
| 2021 | 9,353 |
| 2022 | 9,394 |
| 2023 | 9,458 |
| 2024 | 9,529 |
| 2025 | 9,448 |
Did you know?
- Number 1 in Schwyz for “Population density”.
- “Share of limited companies (AG, GmbH) among registered entities”: higher than in 99% of municipalities.
- “Installed photovoltaic capacity per 1,000 inhabitants”: lower than in 97% of municipalities.
- “Dwellings in buildings built since 2001”: higher than in 94% of municipalities.
- Its area is roughly equal to 340 football pitches.
- Its population density is 16.7 times the national average.
- The nearest municipality is Galgenen, 1.7 km away.
All indicators for Lachen
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 | Lachen | Schwyz | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 20.7% | 20.4% | 20.7% | ranked 909 of 1,811 |
Housing
| Indicator | Lachen | Schwyz | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 4,700 | 85,978 | 4,927,050 | ranked 219 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 10.6% | 14.2% | 23.3% | ranked 1,575 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 42.1% | 33.5% | 25.3% | ranked 105 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 48.7% | 53.5% | 69.5% | ranked 1,663 of 1,806 |
Energy
| Indicator | Lachen | Schwyz | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 63.9% | 55.5% | 53.5% | ranked 550 of 1,806 | |
| Heat pumps as main heating (2026) | 7.7% | 12.1% | 13.7% | ranked 1,429 of 1,806 | |
| Wood heating systems (2026) | 3.6% | 15.4% | 12.4% | ranked 1,571 of 1,806 | |
| District heating (2026) | 13.9% | 8.9% | 1.4% | ranked 156 of 1,806 | |
| Photovoltaic installations (2026) | 136 | 5,032 | 329,600 | ranked 820 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 318.0 kW | 900.4 kW | 1,134 kW | ranked 1,759 of 1,806 | |
| Rooftop solar electricity potential (2026) | 37.9 GWh/year | 1,061 GWh/year | 64,783 GWh/year | ranked 510 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 4,011 kWh/inh. | 6,237 kWh/inh. | 9,356 kWh/inh. | ranked 1,752 of 1,810 |
Economy
| Indicator | Lachen | Schwyz | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 900 | 16,724 | 728,011 | ranked 126 of 2,112 | |
| Entities listed in the commercial register (2026) | 1,265 | 22,716 | 762,757 | ranked 97 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 133.9 | 133.6 | 64.9 | ranked 72 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 83.9% | 77.3% | 65.7% | ranked 24 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 13.4% | 19.0% | 29.0% | ranked 1,770 of 1,808 |
Employment
| Indicator | Lachen | Schwyz | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 5,877 | 92,873 | 5,679,518 | ranked 159 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 622.0 | 546.1 | 362.9 | ranked 287 of 1,810 | |
| Share of jobs in services (2024) | 74.8% | 68.3% | 63.6% | ranked 489 of 1,804 | |
| Share of jobs in industry and construction (2024) | 25.2% | 25.6% | 24.2% | ranked 838 of 1,776 |
Society
| Indicator | Lachen | Schwyz | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 31.9% | 24.3% | 18.9% | ranked 228 of 1,811 |
Sunshine and temperatures: Lachen
Frequently asked questions
What is the population of Lachen?
Lachen has 9,448 residents (2025), ranking 202 of 2,115 municipalities.
How big is Lachen?
Lachen covers 2.4 km², with a density of 3,888 people per km².
Is the population of Lachen growing?
Between 2015 and 2025, the population of Lachen went from 8,480 to 9,448, a change of +11.4%.
Where is Lachen?
Lachen is in Schwyz. It belongs to Bezirk March (district). Latitude 47.191, longitude 8.857.
Share of limited companies (AG, GmbH) among registered entities: what is the figure for Lachen?
In Lachen, “Share of limited companies (AG, GmbH) among registered entities” stands at 83.9% (2026), ranking 24 of 1,808 municipalities; the national median is 65.7%.
Installed photovoltaic capacity per 1,000 inhabitants: what is the figure for Lachen?
In Lachen, “Installed photovoltaic capacity per 1,000 inhabitants” stands at 318.0 kW (2026), ranking 1,759 of 1,806 municipalities; the national median is 1,134 kW.
How much electricity does a solar panel produce in Lachen?
In Lachen, a 1 kWp south-facing system tilted at 40° produces about 1,117 kWh a year.
Which municipalities border Lachen?
The nearest to Lachen are Galgenen (1.7 km), Altendorf (2.0 km), Wangen (SZ) (2.9 km), Rapperswil-Jona (4.6 km), Schübelbach (5.6 km).