Seon: population and statistics
Seon has a population of 5,716 (2025) across 9.6 km², or 595 people per km². It ranks 366 of 2,115 municipalities by population. Its population is growing: +15.6% between 2015 and 2025.
- 5,716 residents
- 9.6 km²
- 595 people/km²
- 444 m
Key points
Among the 197 municipalities in Aargau, Seon ranks No. 36 by population.
A 1 kWp solar panel tilted at 37° generates about 1,152 kWh a year here.
Seon in numbers
Where is Seon?
Population of Seon over time
Seon had 4,945 residents in 2015 and 5,716 in 2025.
| Year | Population |
|---|---|
| 2020 | 5,198 |
| 2021 | 5,208 |
| 2022 | 5,433 |
| 2023 | 5,571 |
| 2024 | 5,652 |
| 2025 | 5,716 |
Did you know?
- Its area is roughly equal to 1,346 football pitches.
- Its population density is 2.6 times the national average.
- The nearest municipality is Egliswil, 2.1 km away.
- The nearest more populous municipality is Gränichen (8,699 residents), 4.7 km away.
- A 4 kWp rooftop solar system here would generate about 4,608 kWh a year, roughly what an average household uses.
All indicators for Seon
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 | Seon | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 19.4% | 19.5% | 20.7% | ranked 1,137 of 1,811 |
Housing
| Indicator | Seon | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 2,754 | 355,613 | 4,927,050 | ranked 420 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 19.5% | 16.6% | 23.3% | ranked 1,087 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 28.3% | 30.9% | 25.3% | ranked 703 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 75.7% | 70.4% | 69.5% | ranked 486 of 1,806 |
Energy
| Indicator | Seon | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 65.4% | 66.6% | 53.5% | ranked 508 of 1,806 | |
| Heat pumps as main heating (2026) | 11.7% | 11.6% | 13.7% | ranked 1,074 of 1,806 | |
| Wood heating systems (2026) | 9.9% | 8.3% | 12.4% | ranked 1,073 of 1,806 | |
| District heating (2026) | 4.7% | 6.5% | 1.4% | ranked 489 of 1,806 | |
| Photovoltaic installations (2026) | 296 | 26,039 | 329,600 | ranked 279 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,601 kW | 997.1 kW | 1,134 kW | ranked 433 of 1,806 | |
| Rooftop solar electricity potential (2026) | 51.3 GWh/year | 5,431 GWh/year | 64,783 GWh/year | ranked 312 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 8,977 kWh/inh. | 7,302 kWh/inh. | 9,356 kWh/inh. | ranked 981 of 1,810 |
Economy
| Indicator | Seon | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 378 | 47,193 | 728,011 | ranked 376 of 2,112 | |
| Entities listed in the commercial register (2026) | 421 | 46,143 | 762,757 | ranked 350 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 73.7 | 62.0 | 64.9 | ranked 608 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 69.4% | 66.6% | 65.7% | ranked 567 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 26.1% | 29.1% | 29.0% | ranked 1,157 of 1,808 |
Employment
| Indicator | Seon | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 2,994 | 364,295 | 5,679,518 | ranked 330 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 523.8 | 489.8 | 362.9 | ranked 446 of 1,810 | |
| Share of jobs in services (2024) | 72.4% | 69.1% | 63.6% | ranked 571 of 1,804 | |
| Share of jobs in industry and construction (2024) | 25.1% | 26.5% | 24.2% | ranked 843 of 1,776 |
Society
| Indicator | Seon | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 26.1% | 28.1% | 18.9% | ranked 482 of 1,811 |
Sunshine and temperatures: Seon
Frequently asked questions
What is the population of Seon?
Seon has 5,716 residents (2025), ranking 366 of 2,115 municipalities.
How big is Seon?
Seon covers 9.6 km², with a density of 595 people per km².
Is the population of Seon growing?
Between 2015 and 2025, the population of Seon went from 4,945 to 5,716, a change of +15.6%.
Where is Seon?
Seon is in Aargau. It belongs to Bezirk Lenzburg (district). Latitude 47.346, longitude 8.160.
Photovoltaic installations: what is the figure for Seon?
In Seon, “Photovoltaic installations” stands at 296 (2026), ranking 279 of 2,108 municipalities; the national median is 103.
Jobs: what is the figure for Seon?
In Seon, “Jobs” stands at 2,994 (2024), ranking 330 of 2,111 municipalities; the national median is 622.
How much electricity does a solar panel produce in Seon?
In Seon, a 1 kWp south-facing system tilted at 37° produces about 1,152 kWh a year.
Which municipalities border Seon?
The nearest to Seon are Egliswil (2.1 km), Hallwil (2.2 km), Dürrenäsch (2.7 km), Teufenthal (AG) (3.6 km), Boniswil (3.7 km).