Demographics
BFS · 2025Women
3'167 47.8%
Men
3'455 52.2%
Children & youth (0–19)
1'399 21.1%
Swiss citizens
4'157 62.8%
Foreign residents
2'465 37.2%
Population density
422 pop./km²
0–19 · 1'399 · 21.1%20–64 · 3'879 · 58.6%65+ · 1'344 · 20.3%
Foreign residents 37.2%0%64.0%
Population change 2025: +62 (+1%) · 38 births · 49 deaths · net migration +87
STATPOP 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026 · swisstopo, retrieved 24.09.2026 · BEVNAT (Statistik der natürlichen Bevölkerungsbewegung) 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026
27.09.2026Popular Initiative 'For food security – through increased sustainable domestic production, more plant-based food and clean drinking water (Food Initiative)'Federal● Rejected · 27.5% YesDistrict Bezirk Thal: 20.1% Yes
22.5% YesNo 77.5%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Thal: 35.5% Yes
31.7% YesNo 68.4%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Thal: 62.7% Yes
60.3% YesNo 39.7%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Thal: 65.5% Yes
60.8% YesNo 39.2%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung des KantonsratsgesetzesCantonal SO● Accepted · 58.6% YesDistrict Bezirk Thal: 46.4% Yes
51.5% YesNo 48.5%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung der KantonsverfassungCantonal SO● Accepted · 58.7% YesDistrict Bezirk Thal: 46.2% Yes
51.4% YesNo 48.7%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Thal: 42.0% Yes
47.4% YesNo 52.6%
08.03.2026Popular Initiative ‘For a fair energy and climate policy: Investing for prosperity, jobs and the environment (Climate Fund Initiative)’Federal● Rejected · 29.3% YesDistrict Bezirk Thal: 14.6% Yes
17.8% YesNo 82.2%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Thal: 47.0% Yes
45.1% YesNo 54.9%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Thal: 45.4% Yes
42.2% YesNo 57.9%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023SVP35.8% · strongest party
SVP35.8%
Mitte28.2%
FDP13.6%
SP10.6%
GRÜNE5.4%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier125%
Cantonal tax multiplier104%
125%SO range 65%145%
Tax rank 81 of 104 in canton SolothurnTax burden
Single, 100'000 CHF gross income
17'010 CHF(17%)
Rank 64 of 104 in the canton · 1830 of 2110 in Switzerland
Median canton 16'810 CHF · median Switzerland 15'290 CHF
Cheapest Kammersrohr 13'027 CHF · most expensive Bolken 18'375 CHF
100'000 CHF:17'010 CHF(~17%)
BalsthalCanton range SolothurnSwitzerland median
Show data table
| Gross income | Balsthal | Solothurn | Switzerland median |
|---|---|---|---|
| 40'000 | 8% | 6.1–8.8% | 5.4% |
| 50'000 | 10.4% | 7.9–11.4% | 7.8% |
| 60'000 | 12.4% | 9.4–13.5% | 10.5% |
| 70'000 | 13.9% | 10.5–15.1% | 11.9% |
| 80'000 | 15.1% | 11.5–16.3% | 13.1% |
| 90'000 | 16% | 12.2–17.3% | 14.1% |
| 100'000 | 17% | 13–18.4% | 15.3% |
| 110'000 | 17.9% | 13.8–19.3% | 16.3% |
| 120'000 | 18.6% | 14.4–20.1% | 17.2% |
| 130'000 | 19.4% | 15.1–20.9% | 18.1% |
| 140'000 | 20.2% | 15.7–21.8% | 19% |
| 150'000 | 20.9% | 16.4–22.5% | 19.7% |
| 175'000 | 22.7% | 17.8–24.3% | 21.6% |
| 200'000 | 24.1% | 19.1–25.8% | 23.2% |
| 225'000 | 25.3% | 20.1–27% | 24.6% |
| 250'000 | 26.4% | 21.1–28.2% | 25.8% |
| 275'000 | 27.3% | 21.9–29.1% | 26.8% |
| 300'000 | 28% | 22.5–29.8% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–20209 °C
Precipitation 1991–20201'140 mm
9 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
1'092 m
Mean elevation
655 m
Relief
621 m
Mean slope
16.5°
Flat share
17.1%
South-facing
24.9%
Above 2000 m
0.0%
Relief 621 m0 m3'847 m
Terrain figures cover the whole municipal territory (swisstopo swissALTIRegio) — not the settlement point. Slope and south-facing share are resolution-dependent and measured at 40 m.
swissALTIRegio 2026 · swisstopo, retrieved 28.08.2026
Roof potential
49 GWh/yr
Roofs + façades
62.8 GWh/yr
≈ households powered
10'900
Per inhabitant
7'397 kWh/yr
49 GWh/yr01'133 GWh/yr
BFE solar factsheet ↗Modelled roof and façade potential from the BFE solar model — the electricity these surfaces could produce, not installed capacity or what the municipality actually generates today. The household figure divides the roof potential by 4'500 kWh per year, ElCom’s reference household (consumption profile H4, a 5-room apartment).
Swiss Federal Office of Energy (SFOE), retrieved 24.09.2026
Electricity
ElCom · 2027Tariff H4
31.21 Rp./kWh
Energy
13.45 Rp./kWh
Grid usage
13.78 Rp./kWh
Levies + grid surcharge
2.91 Rp./kWh
31.21 Rp./kWh10.5645.88
Canton median 28.51 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Primeo Netz AG
ElCom tariff comparison ↗How this is measured
Total household electricity price for ElCom consumption profile H4 — 4'500 kWh a year, a 5-room flat with electric stove and tumble dryer — standard product, excluding VAT, for the tariff year shown. Energy, grid usage, levies to public bodies and the federal grid surcharge are included. Canton and Swiss medians are ElCom's own published figures.
2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026
Health-insurance premiums
BAG · 2024Standard model, deductible 300606 CHF/mo
Ø premium in canton Solothurn424 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo
Premiums are set not per municipality but per canton and premium region. Shown is the average adult premium paid in canton Solothurn (2024, BAG) — it applies canton-wide, not to any single location.
2024 · Federal Office of Public Health (FOPH), retrieved 12.09.2026
Housing
BFS · AREVacancy rate
3.44 %
Second homes
11.8 %
Avg. rooms
3.9
Dwellings
3'226
Built before 194630.3%
Built since 200118.2%
3.44 %0 %12 %
Vacancy rate from the BFS vacant-dwelling count (2025); building age and room count from the Buildings and Dwellings Statistics (2024). The average room count treats the ‘6 rooms or more’ class as 6, so it is a slight lower bound. The vacancy rate is volatile for small municipalities.
Buildings and Dwellings Statistics 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026 · Dwelling inventory and second-home share 2026 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Economy
BFS · 2024Jobs
3'205
Workplaces
384
Services share
64.6 %
Jobs by sector: Primary 34 (1.1%) · Secondary 1'102 (34.4%) · Tertiary 2'069 (64.6%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
11
Organic share
27.3 %
Farmland
322 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026
Accessibility
ARE · NPVMNational Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Municipality
Wikidata · CC0Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities6'622 #10 SO · #309 CHGrowing municipalities1% #39 SO · #835 CHShrinking municipalities1% #66 SO · #1275 CHJobs per resident0.48 #18 SO · #580 CHFamilies & children21.1% #18 SO · #779 CHAge structure20.3% #81 SO · #1177 CHWomen share47.8% #92 SO · #1904 CHForeign residents37.2% #9 SO · #113 CHPopulation density422/km² #38 SO · #587 CHTax burden17'010 #64 SO · #1830 CHTaxes125% #81 SOWarmest municipalities9 °C #80 SO · #1366 CHSunniest municipalities40% #89 SO · #1872 CHRainiest municipalities1'140 mm #36 SO · #871 CHVoter turnout52.6% #63 SO · #1516 CHAgainst Switzerland15.7% #26 SO · #843 CHAligned with Switzerland84.3% #49 SO · #585 CHSVP strongholds35.8% #27 SO · #915 CHSP strongholds10.6% #69 SO · #1458 CHCentre strongholds28.2% #16 SO · #273 CHFDP strongholds13.6% #74 SO · #971 CHGLP strongholds3.6% #86 SO · #1472 CHGreen strongholds5.4% #77 SO · #1465 CHLargest by area15.7 km² #10 SO · #612 CHHighest municipalities501 m #37 SO · #1203 CHSecond homes11.8% #26 SO · #928 CHOrganic farming27.3% #16 SO · #389 CHBest-connected municipalities78 min #92 SO · #1300 CHRemotest municipalities78 min #11 SO · #800 CHHighest peaks1'092 m #18 SO · #671 CHHighest-lying municipalities655 m #25 SO · #868 CHGreatest vertical range621 m #17 SO · #599 CHSteepest municipalities16.5° #20 SO · #515 CHSolar potential49 GWh #8 SO · #341 CHSolar potential per capita7'397 kWh #81 SO · #1601 CHCheapest electricity31.21 Rp./kWh #62 SO · #1905 CHMost expensive electricity31.21 Rp./kWh #18 SO · #157 CH
Postal codes (2)
swisstopoLocalities
swisstopo · 2Nearby municipalities
swisstopo- What is the postal code of Balsthal?
- Balsthal has 2 postal codes: 4710, 4717.
- What is the tax rate in Balsthal?
- The municipal tax multiplier of Balsthal is 125% (2026); canton SO levies 104%.
- How much tax do you pay in Balsthal?
- A single person without children pays about 17'010 CHF income tax in Balsthal on 100'000 CHF gross income (federal, cantonal, municipal), rank 64 of 104 in canton SO. Source: ESTV (2026).
- How many residents does Balsthal have?
- Balsthal has 6'622 residents (2025).
- How many foreign residents live in Balsthal?
- Balsthal has 2'465 foreign residents, a share of 37.22% (2025).
Map
OpenStreetMapBalsthal compared with
- Balsthal vs. Olten
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- Balsthal vs. Solothurn
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- Balsthal vs. Dornach
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- Balsthal vs. Olten
- Balsthal vs. Grenchen
- Balsthal vs. Solothurn
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- Balsthal vs. Biberist
- Balsthal vs. Derendingen
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