Niederlenz: population and statistics
Niederlenz has a population of 4,998 (2025) across 3.3 km², or 1,533 people per km². It ranks 435 of 2,115 municipalities by population. Its population is growing: +9.9% between 2015 and 2025.
- 4,998 residents
- 3.3 km²
- 1,533 people/km²
- 382 m
Key points
Among the 197 municipalities in Aargau, Niederlenz ranks No. 42 by population.
Share of single-family houses among residential buildings: 81.4% in Niederlenz, compared with an average of 70.4% in Aargau and 56.9% nationally.
Share of people aged 65 and over: 16.2% in Niederlenz, compared with an average of 19.5% in Aargau and 19.8% nationally.
A 1 kWp solar panel tilted at 37° generates about 1,154 kWh a year here.
Niederlenz in numbers
Where is Niederlenz?
Population of Niederlenz over time
Niederlenz had 4,546 residents in 2015 and 4,998 in 2025.
| Year | Population |
|---|---|
| 2020 | 4,841 |
| 2021 | 4,798 |
| 2022 | 4,781 |
| 2023 | 4,896 |
| 2024 | 4,958 |
| 2025 | 4,998 |
Did you know?
- “Share of single-family houses among residential buildings”: higher than in 91% of municipalities.
- Its area is roughly equal to 457 football pitches.
- Its population density is 6.6 times the national average.
- The nearest municipality is Möriken-Wildegg, 1.6 km away.
- The nearest more populous municipality is Lenzburg (11,322 residents), 1.7 km away.
- A 4 kWp rooftop solar system here would generate about 4,616 kWh a year, roughly what an average household uses.
All indicators for Niederlenz
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 | Niederlenz | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 16.2% | 19.5% | 20.7% | ranked 1,608 of 1,811 |
Housing
| Indicator | Niederlenz | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 2,189 | 355,613 | 4,927,050 | ranked 554 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 18.6% | 16.6% | 23.3% | ranked 1,151 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 22.9% | 30.9% | 25.3% | ranked 1,054 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 81.4% | 70.4% | 69.5% | ranked 157 of 1,806 |
Energy
| Indicator | Niederlenz | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 66.8% | 66.6% | 53.5% | ranked 453 of 1,806 | |
| Heat pumps as main heating (2026) | 26.0% | 11.6% | 13.7% | ranked 341 of 1,806 | |
| Wood heating systems (2026) | 3.0% | 8.3% | 12.4% | ranked 1,612 of 1,806 | |
| District heating (2026) | 0.3% | 6.5% | 1.4% | ranked 1,387 of 1,806 | |
| Photovoltaic installations (2026) | 194 | 26,039 | 329,600 | ranked 540 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,040 kW | 997.1 kW | 1,134 kW | ranked 1,039 of 1,806 | |
| Rooftop solar electricity potential (2026) | 34.5 GWh/year | 5,431 GWh/year | 64,783 GWh/year | ranked 579 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 6,903 kWh/inh. | 7,302 kWh/inh. | 9,356 kWh/inh. | ranked 1,403 of 1,810 |
Economy
| Indicator | Niederlenz | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 237 | 47,193 | 728,011 | ranked 646 of 2,112 | |
| Entities listed in the commercial register (2026) | 286 | 46,143 | 762,757 | ranked 534 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 57.2 | 62.0 | 64.9 | ranked 1,257 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 65.4% | 66.6% | 65.7% | ranked 930 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 31.1% | 29.1% | 29.0% | ranked 715 of 1,808 |
Employment
| Indicator | Niederlenz | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 1,523 | 364,295 | 5,679,518 | ranked 609 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 304.7 | 489.8 | 362.9 | ranked 1,149 of 1,810 | |
| Share of jobs in services (2024) | 55.0% | 69.1% | 63.6% | ranked 1,194 of 1,804 | |
| Share of jobs in industry and construction (2024) | 44.4% | 26.5% | 24.2% | ranked 205 of 1,776 |
Society
| Indicator | Niederlenz | Aargau | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 30.2% | 28.1% | 18.9% | ranked 292 of 1,811 |
Sunshine and temperatures: Niederlenz
Frequently asked questions
What is the population of Niederlenz?
Niederlenz has 4,998 residents (2025), ranking 435 of 2,115 municipalities.
How big is Niederlenz?
Niederlenz covers 3.3 km², with a density of 1,533 people per km².
Is the population of Niederlenz growing?
Between 2015 and 2025, the population of Niederlenz went from 4,546 to 4,998, a change of +9.9%.
Where is Niederlenz?
Niederlenz is in Aargau. It belongs to Bezirk Lenzburg (district). Latitude 47.403, longitude 8.176.
Share of single-family houses among residential buildings: what is the figure for Niederlenz?
In Niederlenz, “Share of single-family houses among residential buildings” stands at 81.4% (2026), ranking 157 of 1,806 municipalities; the national median is 69.5%.
Share of people aged 65 and over: what is the figure for Niederlenz?
In Niederlenz, “Share of people aged 65 and over” stands at 16.2% (2025), ranking 1,608 of 1,811 municipalities; the national median is 20.7%.
How much electricity does a solar panel produce in Niederlenz?
In Niederlenz, a 1 kWp south-facing system tilted at 37° produces about 1,154 kWh a year.
Which municipalities border Niederlenz?
The nearest to Niederlenz are Möriken-Wildegg (1.6 km), Lenzburg (1.7 km), Staufen (2.3 km), Othmarsingen (2.9 km), Holderbank (AG) (3.5 km).