Demographics
BFS · 2025Women
816 50.5%
Men
799 49.5%
Children & youth (0–19)
334 20.7%
Swiss citizens
1'461 90.5%
Foreign residents
154 9.5%
Population density
280 pop./km²
0–19 · 334 · 20.7%20–64 · 885 · 54.8%65+ · 396 · 24.5%
Foreign residents 9.5%0%64.0%
Population change 2025: −3 (−0.2%) · 12 births · 11 deaths · net migration −5
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 Lebern: 24.2% Yes
21.5% YesNo 78.5%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Lebern: 25.8% Yes
28.6% YesNo 71.4%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Lebern: 56.1% Yes
57.0% YesNo 43.0%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Lebern: 51.8% Yes
51.9% YesNo 48.1%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung des KantonsratsgesetzesCantonal SO● Accepted · 58.6% YesDistrict Bezirk Lebern: 58.3% Yes
52.9% YesNo 47.1%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung der KantonsverfassungCantonal SO● Accepted · 58.7% YesDistrict Bezirk Lebern: 58.3% Yes
52.9% YesNo 47.1%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Lebern: 55.1% Yes
50.1% YesNo 49.9%
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 Lebern: 23.1% Yes
21.0% YesNo 79.1%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Lebern: 40.7% Yes
38.0% YesNo 62.0%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Lebern: 38.2% Yes
40.8% YesNo 59.2%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023SVP27.8% · strongest party
SVP27.8%
FDP17.2%
Mitte17.0%
SP15.8%
GRÜNE10.3%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier127%
Cantonal tax multiplier104%
127%SO range 65%145%
Tax rank 85 of 104 in canton SolothurnTax burden
Single, 100'000 CHF gross income
17'144 CHF(17.1%)
Rank 85 of 104 in the canton · 1896 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:17'144 CHF(~17.1%)
LommiswilCanton range SolothurnSwitzerland median
Show data table
| Gross income | Lommiswil | Solothurn | Switzerland median |
|---|---|---|---|
| 40'000 | 8.1% | 6.1–8.8% | 5.4% |
| 50'000 | 10.5% | 7.9–11.4% | 7.8% |
| 60'000 | 12.5% | 9.4–13.5% | 10.5% |
| 70'000 | 14% | 10.5–15.1% | 11.9% |
| 80'000 | 15.2% | 11.5–16.3% | 13.1% |
| 90'000 | 16.1% | 12.2–17.3% | 14.1% |
| 100'000 | 17.1% | 13–18.4% | 15.3% |
| 110'000 | 18% | 13.8–19.3% | 16.3% |
| 120'000 | 18.8% | 14.4–20.1% | 17.2% |
| 130'000 | 19.6% | 15.1–20.9% | 18.1% |
| 140'000 | 20.4% | 15.7–21.8% | 19% |
| 150'000 | 21.1% | 16.4–22.5% | 19.7% |
| 175'000 | 22.8% | 17.8–24.3% | 21.6% |
| 200'000 | 24.2% | 19.1–25.8% | 23.2% |
| 225'000 | 25.5% | 20.1–27% | 24.6% |
| 250'000 | 26.6% | 21.1–28.2% | 25.8% |
| 275'000 | 27.4% | 21.9–29.1% | 26.8% |
| 300'000 | 28.2% | 22.5–29.8% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–20209.1 °C
Precipitation 1991–20201'400 mm
9.1 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
1'367 m
Mean elevation
727 m
Relief
874 m
Mean slope
13.5°
Flat share
33.7%
South-facing
59.1%
Above 2000 m
0.0%
Relief 874 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
13.7 GWh/yr
Roofs + façades
17.9 GWh/yr
≈ households powered
3'100
Per inhabitant
8'508 kWh/yr
14 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 range H4
24.09–28.11 Rp./kWh
26.1 Rp./kWh10.5645.88
Canton median 28.51 Rp./kWhSwiss median 26.53 Rp./kWh
Network operators BKW Energie AG · Regio Energie Solothurn
ElCom tariff comparison ↗This municipality is served by 2 network operators with different tariffs; the range spans the cheapest and the most expensive.
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
1.99 %
Second homes
9.5 %
Avg. rooms
4.5
Dwellings
753
Built before 194617.8%
Built since 200121.9%
1.99 %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
201
Workplaces
75
Services share
66.2 %
Jobs by sector: Primary 34 (16.9%) · Secondary 34 (16.9%) · Tertiary 133 (66.2%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
14
Organic share
21.4 %
Farmland
253 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 municipalities1'615 #51 SO · #1112 CHGrowing municipalities-0.2% #69 SO · #1527 CHShrinking municipalities-0.2% #36 SO · #584 CHJobs per resident0.12 #98 SO · #2056 CHFamilies & children20.7% #29 SO · #912 CHAge structure24.5% #29 SO · #458 CHWomen share50.5% #33 SO · #626 CHForeign residents9.5% #81 SO · #1741 CHPopulation density280/km² #54 SO · #816 CHTax burden17'144 #85 SO · #1896 CHTaxes127% #85 SOWarmest municipalities9.1 °C #75 SO · #1309 CHSunniest municipalities40.8% #28 SO · #1489 CHRainiest municipalities1'400 mm #7 SO · #352 CHVoter turnout62.3% #9 SO · #394 CHAgainst Switzerland7.8% #62 SO · #1337 CHAligned with Switzerland92.2% #15 SO · #137 CHSVP strongholds27.8% #82 SO · #1410 CHSP strongholds15.8% #42 SO · #862 CHCentre strongholds17% #61 SO · #700 CHFDP strongholds17.2% #45 SO · #637 CHGLP strongholds8.7% #6 SO · #481 CHGreen strongholds10.3% #22 SO · #524 CHLargest by area5.8 km² #54 SO · #1420 CHHighest municipalities564 m #23 SO · #949 CHSecond homes9.5% #54 SO · #1301 CHOrganic farming21.4% #27 SO · #580 CHBest-connected municipalities70 min #77 SO · #1080 CHRemotest municipalities70 min #31 SO · #1029 CHHighest peaks1'367 m #6 SO · #520 CHHighest-lying municipalities727 m #16 SO · #711 CHGreatest vertical range874 m #5 SO · #477 CHSteepest municipalities13.5° #34 SO · #657 CHSolar potential14 GWh #55 SO · #1303 CHSolar potential per capita8'508 kWh #64 SO · #1356 CHCheapest electricity26.1 Rp./kWh #31 SO · #897 CHMost expensive electricity26.1 Rp./kWh #74 SO · #1210 CH
Postal codes (2)
swisstopoLocalities
swisstopo · 2Nearby municipalities
swisstopo- What is the postal code of Lommiswil?
- Lommiswil has 2 postal codes: 4512, 4514.
- What is the tax rate in Lommiswil?
- The municipal tax multiplier of Lommiswil is 127% (2026); canton SO levies 104%.
- How much tax do you pay in Lommiswil?
- A single person without children pays about 17'144 CHF income tax in Lommiswil on 100'000 CHF gross income (federal, cantonal, municipal), rank 85 of 104 in canton SO. Source: ESTV (2026).
- How many residents does Lommiswil have?
- Lommiswil has 1'615 residents (2025).
- How many foreign residents live in Lommiswil?
- Lommiswil has 154 foreign residents, a share of 9.54% (2025).
Map
OpenStreetMapLommiswil compared with
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