Sisseln: population and statistics
Sisseln has a population of 1,653 (2025) across 2.5 km², or 656 people per km². It ranks 1,093 of 2,115 municipalities by population. Its population is growing: +6.6% between 2015 and 2025.
- 1,653 residents
- 2.5 km²
- 656 people/km²
- 306 m
Key points
Among the 197 municipalities in Aargau, Sisseln ranks No. 126 by population.
Share of jobs in industry and construction: 75.6% in Sisseln, compared with an average of 26.5% in Aargau and 22.0% nationally.
Heat pumps as main heating: 52.3% in Sisseln, compared with an average of 11.6% in Aargau and 15.5% nationally.
A 1 kWp solar panel tilted at 38° generates about 1,181 kWh a year here.
Sisseln in numbers
Where is Sisseln?
Population of Sisseln over time
Sisseln had 1,551 residents in 2015 and 1,653 in 2025.
| Year | Population |
|---|---|
| 2020 | 1,661 |
| 2021 | 1,691 |
| 2022 | 1,684 |
| 2023 | 1,666 |
| 2024 | 1,653 |
| 2025 | 1,653 |
Did you know?
- Number 1 in Aargau for “Heat pumps as main heating”.
- Number 1 in Aargau for “Installed photovoltaic capacity per 1,000 inhabitants”.
- “Share of jobs in industry and construction”: higher than in 99% of municipalities.
- “Heat pumps as main heating”: higher than in 99% of municipalities.
- “Share of single-family houses among residential buildings”: higher than in 90% of municipalities.
- Its area is roughly equal to 353 football pitches.
- Its population density is 2.8 times the national average.
All indicators for Sisseln
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 | Sisseln | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 17.4% | 19.5% | 20.7% | ranked 1,471 of 1,811 |
Housing
| Indicator | Sisseln | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 791 | 355,613 | 4,927,050 | ranked 1,192 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 11.2% | 16.6% | 23.3% | ranked 1,546 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 29.3% | 30.9% | 25.3% | ranked 651 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 80.8% | 70.4% | 69.5% | ranked 188 of 1,806 |
Energy
| Indicator | Sisseln | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 37.0% | 66.6% | 53.5% | ranked 1,445 of 1,806 | |
| Heat pumps as main heating (2026) | 52.3% | 11.6% | 13.7% | ranked 12 of 1,806 | |
| Wood heating systems (2026) | 3.6% | 8.3% | 12.4% | ranked 1,572 of 1,806 | |
| District heating (2026) | 4.6% | 6.5% | 1.4% | ranked 492 of 1,806 | |
| Photovoltaic installations (2026) | 61 | 26,039 | 329,600 | ranked 1,446 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 3,360 kW | 997.1 kW | 1,134 kW | ranked 27 of 1,806 | |
| Rooftop solar electricity potential (2026) | 17.6 GWh/year | 5,431 GWh/year | 64,783 GWh/year | ranked 1,118 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 10,653 kWh/inh. | 7,302 kWh/inh. | 9,356 kWh/inh. | ranked 703 of 1,810 |
Economy
| Indicator | Sisseln | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 95 | 47,193 | 728,011 | ranked 1,293 of 2,112 | |
| Entities listed in the commercial register (2026) | 111 | 46,143 | 762,757 | ranked 1,091 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 67.2 | 62.0 | 64.9 | ranked 818 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 62.2% | 66.6% | 65.7% | ranked 1,218 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 28.8% | 29.1% | 29.0% | ranked 915 of 1,808 |
Employment
| Indicator | Sisseln | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 1,243 | 364,295 | 5,679,518 | ranked 714 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 752.0 | 489.8 | 362.9 | ranked 165 of 1,810 | |
| Share of jobs in services (2024) | 23.9% | 69.1% | 63.6% | ranked 1,780 of 1,804 | |
| Share of jobs in industry and construction (2024) | 75.6% | 26.5% | 24.2% | ranked 6 of 1,776 |
Society
| Indicator | Sisseln | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 30.7% | 28.1% | 18.9% | ranked 276 of 1,811 |
Sunshine and temperatures: Sisseln
Frequently asked questions
What is the population of Sisseln?
Sisseln has 1,653 residents (2025), ranking 1,093 of 2,115 municipalities.
How big is Sisseln?
Sisseln covers 2.5 km², with a density of 656 people per km².
Is the population of Sisseln growing?
Between 2015 and 2025, the population of Sisseln went from 1,551 to 1,653, a change of +6.6%.
Where is Sisseln?
Sisseln is in Aargau. It belongs to Bezirk Laufenburg (district). Latitude 47.554, longitude 7.990.
Share of jobs in industry and construction: what is the figure for Sisseln?
In Sisseln, “Share of jobs in industry and construction” stands at 75.6% (2024), ranking 6 of 1,776 municipalities; the national median is 24.2%.
Heat pumps as main heating: what is the figure for Sisseln?
In Sisseln, “Heat pumps as main heating” stands at 52.3% (2026), ranking 12 of 1,806 municipalities; the national median is 13.7%.
How much electricity does a solar panel produce in Sisseln?
In Sisseln, a 1 kWp south-facing system tilted at 38° produces about 1,181 kWh a year.
Which municipalities border Sisseln?
The nearest to Sisseln are Eiken (2.4 km), Münchwilen (AG) (2.6 km), Stein (AG) (3.1 km), Oeschgen (4.2 km), Kaisten (4.5 km).