Aargau, Switzerland
Aarau cadastral map: plots, homes and population
Aarau had 22,932 residents at the end of 2025 and 12,564 homes, 11% of them second homes.
Tap a plot in Aarau (Switzerland) on the map to see its size, dimensions and sun exposure.
Open the Aarau mapHousing in Aarau
Official figures for the municipality of Aarau, canton of Aargau.
- Residents, end of 2025
- 22,932
- Homes
- 12,564
- Second homes
- 11%
- New homes 2020–2024
- 433
- per 1,000 residents: 18.9
- Density
- 1,858
- residents per km²
- Municipal area
- 12.3 km²
Change since the end of 2024: +1% (Switzerland: +0.8%).
From 2020 to 2024, 433 new homes were built in Aarau, 18.9 per 1,000 residents (Switzerland: 24.9).
Sources: Swiss Federal Statistical Office, STATPOP (permanent resident population at 31 December 2024 and 2025) and construction and housing statistics; Federal Office for Spatial Development, housing inventory (March 2026); swisstopo, swissBOUNDARIES3D. Free use with the source cited.
Population
22,932
Sun exposure
N · E · S · W
Source
Mensuration officielle (swisstopo)
Frequently asked questions
What share of homes in Aarau are second homes?
11% of the 12,564 homes in Aarau are second homes (Federal Office for Spatial Development housing inventory, March 2026), against 15% across Switzerland.
How many homes are being built in Aarau?
From 2020 to 2024, 433 new homes were built in Aarau, 18.9 per 1,000 residents (Switzerland: 24.9). Change since the end of 2024: +1% (Switzerland: +0.8%).
Are there official property prices for Aarau?
Switzerland publishes no open sale prices by municipality. Some cantons, such as Zurich, Geneva and Vaud, publish their own transaction statistics. OpenParcels shows the official population and housing figures and every plot of the official cadastral survey.
How do I find the size of a plot in Aarau?
Open the map, zoom into Aarau and tap the plot: its area, perimeter and dimensions appear instantly in m² or sq ft.
Is the Aarau land registry free to browse?
Yes. It is free with no sign-up. Data comes from official cadastral sources where available and OpenStreetMap elsewhere.
How can I tell if a garden gets good sun?
Each plot card has a sun compass showing which way the garden or main façade faces (due south, west…), computed from the plot and building shapes.
Neighbouring municipalities