Demographics
BFS · 2025Women
927 49.1%
Men
961 50.9%
Children & youth (0–19)
383 20.3%
Swiss citizens
1'695 89.8%
Foreign residents
193 10.2%
Population density
220 pop./km²
0–19 · 383 · 20.3%20–64 · 1'106 · 58.6%65+ · 399 · 21.1%
Foreign residents 10.2%0%64.0%
Population change 2025: +4 (+0.2%) · 12 births · 22 deaths · net migration +8
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 Gäu: 19.4% Yes
17.8% YesNo 82.2%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Gäu: 32.5% Yes
25.4% YesNo 74.6%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Gäu: 64.0% Yes
64.5% YesNo 35.5%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Gäu: 62.1% Yes
59.1% YesNo 40.9%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung des KantonsratsgesetzesCantonal SO● Accepted · 58.6% YesDistrict Bezirk Gäu: 50.2% Yes
52.9% YesNo 47.1%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung der KantonsverfassungCantonal SO● Accepted · 58.7% YesDistrict Bezirk Gäu: 50.6% Yes
53.4% YesNo 46.6%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Gäu: 48.6% Yes
44.9% YesNo 55.1%
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 Gäu: 16.6% Yes
14.4% YesNo 85.6%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Gäu: 46.6% Yes
39.8% YesNo 60.2%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Gäu: 43.2% Yes
38.2% YesNo 61.8%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023Mitte40.6% · strongest party
Mitte40.6%
SVP27.2%
FDP13.9%
SP8.5%
GRÜNE4.4%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier117%
Cantonal tax multiplier104%
117%SO range 65%145%
Tax rank 38 of 104 in canton SolothurnTax burden
Single, 100'000 CHF gross income
16'476 CHF(16.5%)
Rank 37 of 104 in the canton · 1557 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:16'476 CHF(~16.5%)
KestenholzCanton range SolothurnSwitzerland median
Show data table
| Gross income | Kestenholz | Solothurn | Switzerland median |
|---|---|---|---|
| 40'000 | 7.8% | 6.1–8.8% | 5.4% |
| 50'000 | 10.1% | 7.9–11.4% | 7.8% |
| 60'000 | 12% | 9.4–13.5% | 10.5% |
| 70'000 | 13.4% | 10.5–15.1% | 11.9% |
| 80'000 | 14.6% | 11.5–16.3% | 13.1% |
| 90'000 | 15.5% | 12.2–17.3% | 14.1% |
| 100'000 | 16.5% | 13–18.4% | 15.3% |
| 110'000 | 17.3% | 13.8–19.3% | 16.3% |
| 120'000 | 18.1% | 14.4–20.1% | 17.2% |
| 130'000 | 18.9% | 15.1–20.9% | 18.1% |
| 140'000 | 19.6% | 15.7–21.8% | 19% |
| 150'000 | 20.3% | 16.4–22.5% | 19.7% |
| 175'000 | 22% | 17.8–24.3% | 21.6% |
| 200'000 | 23.4% | 19.1–25.8% | 23.2% |
| 225'000 | 24.6% | 20.1–27% | 24.6% |
| 250'000 | 25.7% | 21.1–28.2% | 25.8% |
| 275'000 | 26.5% | 21.9–29.1% | 26.8% |
| 300'000 | 27.3% | 22.5–29.8% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–20209.5 °C
Precipitation 1991–20201'112 mm
9.5 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
520 m
Mean elevation
465 m
Relief
90 m
Mean slope
4.1°
Flat share
67.7%
South-facing
10.9%
Above 2000 m
0.0%
Relief 90 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
20.3 GWh/yr
Roofs + façades
25.2 GWh/yr
≈ households powered
4'500
Per inhabitant
10'731 kWh/yr
20 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
45.88 Rp./kWh
Energy
26.3 Rp./kWh
Grid usage
13.45 Rp./kWh
Levies + grid surcharge
3.2 Rp./kWh
45.88 Rp./kWh10.5645.88
Canton median 28.51 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Energie Kestenholz
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
0.45 %
Second homes
9.5 %
Avg. rooms
4.3
Dwellings
885
Built before 194624.2%
Built since 200120.2%
0.45 %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
603
Workplaces
127
Services share
70.8 %
Jobs by sector: Primary 43 (7.1%) · Secondary 133 (22.1%) · Tertiary 427 (70.8%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
17
Organic share
29.4 %
Farmland
425 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 municipalities1'888 #46 SO · #1005 CHGrowing municipalities0.2% #58 SO · #1278 CHShrinking municipalities0.2% #47 SO · #829 CHJobs per resident0.32 #44 SO · #1181 CHFamilies & children20.3% #38 SO · #1031 CHAge structure21.1% #66 SO · #1025 CHWomen share49.1% #70 SO · #1476 CHForeign residents10.2% #79 SO · #1682 CHPopulation density220/km² #63 SO · #974 CHTax burden16'476 #38 SO · #1558 CHTaxes117% #38 SOWarmest municipalities9.5 °C #37 SO · #966 CHSunniest municipalities39.9% #98 SO · #1930 CHRainiest municipalities1'112 mm #49 SO · #1041 CHVoter turnout55.2% #41 SO · #1188 CHAgainst Switzerland10.8% #49 SO · #1170 CHAligned with Switzerland89.2% #24 SO · #291 CHSVP strongholds27.2% #85 SO · #1447 CHSP strongholds8.5% #79 SO · #1656 CHCentre strongholds40.6% #2 SO · #128 CHFDP strongholds13.9% #69 SO · #935 CHGLP strongholds3.3% #93 SO · #1533 CHGreen strongholds4.4% #83 SO · #1654 CHLargest by area8.6 km² #27 SO · #1083 CHHighest municipalities498 m #40 SO · #1218 CHSecond homes9.5% #55 SO · #1314 CHOrganic farming29.4% #15 SO · #346 CHBest-connected municipalities79 min #96 SO · #1334 CHRemotest municipalities79 min #9 SO · #787 CHHighest peaks520 m #77 SO · #1812 CHHighest-lying municipalities465 m #73 SO · #1619 CHGreatest vertical range90 m #79 SO · #1883 CHSteepest municipalities4.1° #76 SO · #1725 CHSolar potential20 GWh #43 SO · #1006 CHSolar potential per capita10'731 kWh #32 SO · #952 CHCheapest electricity45.88 Rp./kWh #104 SO · #2106 CHMost expensive electricity45.88 Rp./kWh #1 SO · #1 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopo- What is the postal code of Kestenholz?
- The postal code of Kestenholz is 4703.
- What is the tax rate in Kestenholz?
- The municipal tax multiplier of Kestenholz is 117% (2026); canton SO levies 104%.
- How much tax do you pay in Kestenholz?
- A single person without children pays about 16'476 CHF income tax in Kestenholz on 100'000 CHF gross income (federal, cantonal, municipal), rank 37 of 104 in canton SO. Source: ESTV (2026).
- How many residents does Kestenholz have?
- Kestenholz has 1'888 residents (2025).
- How many foreign residents live in Kestenholz?
- Kestenholz has 193 foreign residents, a share of 10.22% (2025).
Map
OpenStreetMapKestenholz compared with
- Kestenholz vs. Olten
- Kestenholz vs. Grenchen
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- Kestenholz vs. Trimbach
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- Kestenholz vs. Olten
- Kestenholz vs. Grenchen
- Kestenholz vs. Solothurn
- Kestenholz vs. Zuchwil
- Kestenholz vs. Biberist
- Kestenholz vs. Derendingen
- Kestenholz vs. Trimbach
- Kestenholz vs. Dornach
- Kestenholz vs. Oensingen
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