Herznach-Ueken: population and statistics
Herznach-Ueken has a population of 2,765 (2025) across – km², or – people per km². It ranks 773 of 2,115 municipalities by population. Its population is growing: +18.8% between 2015 and 2025.
- 2,765 residents
- 418 m
Key points
Among the 197 municipalities in Aargau, Herznach-Ueken ranks No. 88 by population.
Dwellings in buildings built since 2001: 38.7% in Herznach-Ueken, compared with an average of 30.9% in Aargau and 24.6% nationally.
Jobs per 1,000 inhabitants: 188.8 in Herznach-Ueken, compared with an average of 489.8 in Aargau and 622.5 nationally.
A 1 kWp solar panel tilted at 36° generates about 1,141 kWh a year here.
Herznach-Ueken in numbers
Where is Herznach-Ueken?
Population of Herznach-Ueken over time
Herznach-Ueken had 2,327 residents in 2015 and 2,765 in 2025.
| Year | Population |
|---|---|
| 2020 | 2,477 |
| 2021 | 2,534 |
| 2022 | 2,563 |
| 2023 | 2,634 |
| 2024 | 2,667 |
| 2025 | 2,765 |
Did you know?
All indicators for Herznach-Ueken
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 | Herznach-Ueken | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 17.9% | 19.5% | 20.7% | ranked 1,409 of 1,811 |
Housing
| Indicator | Herznach-Ueken | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 1,265 | 355,613 | 4,927,050 | ranked 887 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 19.2% | 16.6% | 23.3% | ranked 1,107 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 38.7% | 30.9% | 25.3% | ranked 198 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 79.2% | 70.4% | 69.5% | ranked 266 of 1,806 |
Energy
| Indicator | Herznach-Ueken | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 46.8% | 66.6% | 53.5% | ranked 1,147 of 1,806 | |
| Heat pumps as main heating (2026) | 16.9% | 11.6% | 13.7% | ranked 732 of 1,806 | |
| Wood heating systems (2026) | 21.4% | 8.3% | 12.4% | ranked 485 of 1,806 | |
| District heating (2026) | 0.2% | 6.5% | 1.4% | ranked 1,433 of 1,806 | |
| Photovoltaic installations (2026) | 167 | 26,039 | 329,600 | ranked 653 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,180 kW | 997.1 kW | 1,134 kW | ranked 856 of 1,806 | |
| Rooftop solar electricity potential (2026) | 23.8 GWh/year | 5,431 GWh/year | 64,783 GWh/year | ranked 885 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 8,597 kWh/inh. | 7,302 kWh/inh. | 9,356 kWh/inh. | ranked 1,053 of 1,810 |
Economy
| Indicator | Herznach-Ueken | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 168 | 47,193 | 728,011 | ranked 892 of 2,112 | |
| Entities listed in the commercial register (2026) | 148 | 46,143 | 762,757 | ranked 928 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 53.5 | 62.0 | 64.9 | ranked 1,392 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 63.5% | 66.6% | 65.7% | ranked 1,100 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 33.1% | 29.1% | 29.0% | ranked 556 of 1,808 |
Employment
| Indicator | Herznach-Ueken | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 522 | 364,295 | 5,679,518 | ranked 1,151 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 188.8 | 489.8 | 362.9 | ranked 1,598 of 1,810 | |
| Share of jobs in services (2024) | 50.2% | 69.1% | 63.6% | ranked 1,345 of 1,804 | |
| Share of jobs in industry and construction (2024) | 31.8% | 26.5% | 24.2% | ranked 558 of 1,776 |
Society
| Indicator | Herznach-Ueken | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 20.1% | 28.1% | 18.9% | ranked 810 of 1,811 |
Sunshine and temperatures: Herznach-Ueken
Frequently asked questions
What is the population of Herznach-Ueken?
Herznach-Ueken has 2,765 residents (2025), ranking 773 of 2,115 municipalities.
Is the population of Herznach-Ueken growing?
Between 2015 and 2025, the population of Herznach-Ueken went from 2,327 to 2,765, a change of +18.8%.
Where is Herznach-Ueken?
Herznach-Ueken is in Aargau. It belongs to Bezirk Laufenburg (district). Latitude 47.473, longitude 8.052.
Dwellings in buildings built since 2001: what is the figure for Herznach-Ueken?
In Herznach-Ueken, “Dwellings in buildings built since 2001” stands at 38.7% (2026), ranking 198 of 1,806 municipalities; the national median is 25.3%.
Jobs per 1,000 inhabitants: what is the figure for Herznach-Ueken?
In Herznach-Ueken, “Jobs per 1,000 inhabitants” stands at 188.8 (2024), ranking 1,598 of 1,810 municipalities; the national median is 362.9.
How much electricity does a solar panel produce in Herznach-Ueken?
In Herznach-Ueken, a 1 kWp south-facing system tilted at 36° produces about 1,141 kWh a year.
Which municipalities border Herznach-Ueken?
The nearest to Herznach-Ueken are Densbüren (2.0 km), Zeihen (2.5 km), Böztal (3.1 km), Oberhof (4.2 km), Wölflinswil (4.3 km).