Bezirk Gäu
SolothurnBezirk Gäu is one of 10 districts of the canton of Solothurn and comprises 8 municipalities with 23'418 residents in all (BFS, 2025). A district is an administrative unit of the canton — a court and administrative area, not a postal delivery area: postal codes and localities follow delivery routes and can cross district borders.
Municipalities in Bezirk Gäu
BFS · 8Votes in Bezirk Gäu
district results as published by BFSPolitics
National Council election 2023 · sum of its municipalitiesTax rate in the district
ESTV 2026A district has no tax rate of its own. Rates range from 89 % % in Härkingen to 120 % % in Neuendorf (median 114 % %).
Tax burden (single, CHF 100,000): 14.6 % in Härkingen to 16.7 % in Neuendorf (ESTV 2'026)
Housing
BFSVacancy rate: published by BFS for the district (2025) · Dwellings: sum of its municipalities (2024)
Population change
BFS · 2025 · sum of its municipalitiesEconomy
BFS · 2024 · sum of its municipalitiesAgriculture
BFS · 2025 · sum of its municipalitiesClimate · Terrain
MeteoSchweiz · swisstopoClimate: area-weighted over its municipalities · Terrain: swissALTIRegio 40 m, zonal over the district polygon
Energy · Accessibility
BFE · ElCom · ARESolar potential: sum of its municipalities · Electricity: median of its municipalities (21.15–45.883 Rp./kWh, 2027). ElCom publishes a median per municipality; the district value is our median of those. · Accessibility: median of its municipalities
Where the municipalities of Bezirk Gäu rank
sum of its municipalities2 of these postal codes reach across the district border.
Map
swisstopo · OSM- Which municipalities belong to Bezirk Gäu?
- Bezirk Gäu comprises 8 municipalities: Oensingen, Egerkingen, Wolfwil, Neuendorf, Oberbuchsiten, Kestenholz, Härkingen, Niederbuchsiten. Together they have 23'418 residents (BFS, 2025).
- Which canton is Bezirk Gäu in?
- Bezirk Gäu lies in the canton of Solothurn, which is divided into 10 districts.
- How many people live in Bezirk Gäu?
- Bezirk Gäu has 23'418 residents (BFS STATPOP, 2025) — the sum of its 8 municipalities; the largest is Oensingen with 6'766.
- Does Bezirk Gäu have its own tax rate?
- No. Tax rates are set by municipalities. In Bezirk Gäu the municipal rate ranges from 89 % (Härkingen) to 120 % (Neuendorf).
- How did Bezirk Gäu vote in the latest federal vote?
- On 14.06.2026, Bezirk Gäu voted 64 % yes on “Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)” (Accepted) — the district figure BFS publishes.
Districts exist in 17 cantons; UR, OW, NW, GL, ZG, BS, AI, NE and GE have no such level.