Population
4'868↑0.4%
About Birr
City · Aargau
Birr is a municipality in the Swiss canton of Aargau and the capital of Brugg (district). The village lies halfway between Lenzburg and Brugg. Birr has grown with its neighbour Lupfig into a conurbation.
Population
4'868
Tax multiplier
117%
Birr in numbers
Federal data — BFS (STATPOP, STATENT, land use), ESTV, BAKOM, ARE.117%
Top quartile in canton
Median taxable income
CHF 53'100↑3.7%
Bottom quartile in canton
Median net income
CHF 61'300↑4.4%
76%
Cantonal tax multiplier
103%↓7.2%
3.61%↑9.7%
Top 10% in canton
- Forest35%
- Agriculture33%
- Settlement32%
Foreign residents
46.3%↓0.1%
Top 10% in canton
Dwellings
2'022↑2.3%
Jobs (FTE)
1'801↓1.0%
95%
16%
Fibre
Housing market in Birr
The rental vacancy rate is 3.61%, 204% above the cantonal average (1.19 %) — a comparatively relaxed market. The municipal tax multiplier (Steuerfuss) is 117%, 13% above the cantonal average (104 %). Median taxable income is CHF 63'000, roughly the Swiss average (CHF 61'929). Birr has 4'868 residents (2025).
Source: Swiss Federal Statistical Office (BFS).
