About Birr
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.
- Canton
- Aargau
- Area
- 5.0 km²
Population
4'847residents
Median taxable income
CHF 68'961
Vacancy
3.61%
Foreign residents
46.3%
Dwellings
2'022
Jobs (FTE)
2'147
Tax multiplier
117%
Land use across the commune
Every 100 × 100 m of Birr, coloured by how it's used. Drawn from the BFS Arealstatistik 2025 release — the most recent nationwide snapshot.
Source BFS Arealstatistik
Loading statistics …
Jobs & economy
2'147 full-time-equivalent jobs across 171 businesses — services make up 43% of employment, industry 56% (2018).
Source BFS STATENT
2'147FTE total
Primary1.7%
Secondary55.8%
Tertiary42.5%
Land use
32% built-up, 33% agricultural, 35% forest. Measured across 505 hectares (2018).
Source BFS Arealstatistik
Settlement31.9%
Agriculture33.3%
Forest34.9%
Water0.0%
Election Results
SVP led the 2023 National Council election with 39.7%, ahead of SP at 16.1%.
Source BFS
SVP39.7%+2.0 pp
SP16.1%−0.7 pp
FDP14.1%−1.1 pp
Mitte10.5%
GLP7.2%+1.5 pp
Grüne3.8%−1.7 pp
EVP3.3%−2.7 pp
Others
3.0%
2023 vs 2019
Primary / second-home mix
94.6% of dwellings are primary residences; 5.4% are second homes (2026).
Source BFS
Primary residences94.6%
Second homes5.4%
Climate data
Annual mean 10.0°C with 920 mm of rain. Warmest in July (19.4°C), coldest in January (1.2°C). Station: Buchs / Aarau, 387 m.
Source MeteoSchweiz
10.0°C
Annual mean
Mean 10.0°C
Rain 920 mm
Sun ≈127 days
Buchs / Aarau · 387 m.a.s.l. · 1991–2020 normals
Warming trend
Mean annual temperature at Zürich / Fluntern has risen by +2.2°C between the first 30 observed years (1864–1893) and the most recent (1996–2025).
Source MeteoSchweiz NBCN
+2.2°C
mean 1996–2025 vs. 1864–1893
Zürich / Fluntern · 556 m.a.s.l. · 1864–2025
