Population of Aarau, Switzerland as of July 2025. How many people live in Aarau today?

Switzerland / Aarau

The exact population of Aarau as of July 2025 is estimated at 21,726 residents. Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from Aarau.

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Check out more data on population in Switzerland:

Flawil
Sarnen
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Zollikofen
Suhr
Davos

This population of Aarau is provided by the local bureau of statistics.
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