About 5027 Herznach
Herznach-Ueken is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. It was established on 1 January 2023 with the merger of the municipalities of Herznach and Ueken.
- Canton
- Aargau
- Area
- 11.4 km²
Population
2'667residents
Vacancy
0.50%
Foreign residents
19.2%
Dwellings
1'200
Tax multiplier
110%
Land use across the commune
Every 100 × 100 m of 5027 Herznach, coloured by how it's used. Drawn from the BFS Arealstatistik 2025 release — the most recent nationwide snapshot.
Source BFS Arealstatistik
Loading statistics …
Election Results
SVP led the 2023 National Council election with 35.5%, ahead of SP at 16.4%.
Source BFS
SVP35.5%+4.0 pp
SP16.4%±0 pp
FDP13.1%−0.5 pp
Mitte12.0%
GLP8.5%±0 pp
Grüne7.1%−2.7 pp
EVP3.5%−0.2 pp
Others
1.1%
2023 vs 2019
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