Demographics
BFS · 2025Women
388 50.5%
Men
380 49.5%
Children & youth (0–19)
145 18.9%
Swiss citizens
652 84.9%
Foreign residents
116 15.1%
Population density
171 pop./km²
0–19 · 145 · 18.9%20–64 · 453 · 59.0%65+ · 170 · 22.1%
Foreign residents 15.1%0%64.0%
Population change 2025: −4 (−0.5%) · 5 births · 9 deaths · net migration −1
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
14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)Federal● Accepted · 52.5% YesDistrict Bezirk Olten: 53.2% Yes
64.5% YesNo 35.5%
14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected · 45.2% YesDistrict Bezirk Olten: 46.7% Yes
68.8% YesNo 31.2%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung des KantonsratsgesetzesCantonal SO● Accepted · 58.6% YesDistrict Bezirk Olten: 62.8% Yes
50.0% YesNo 50.0%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung der KantonsverfassungCantonal SO● Accepted · 58.7% YesDistrict Bezirk Olten: 62.8% Yes
51.6% YesNo 48.4%
08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% YesDistrict Bezirk Olten: 56.6% Yes
43.7% YesNo 56.3%
08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected · 29.3% YesDistrict Bezirk Olten: 28.5% Yes
15.4% YesNo 84.6%
08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected · 38.1% YesDistrict Bezirk Olten: 36.7% Yes
45.4% YesNo 54.6%
08.03.2026Bargeldinitiative und Gegenvorschlag: StichfrageFederal● Rejected · 37.4% YesDistrict Bezirk Olten: 35.8% Yes
42.3% YesNo 57.7%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 21.09.2026
Politics
National Council election 2023SVP41.2% · strongest party
SVP41.2%
Mitte26.3%
FDP11.8%
SP10.3%
GRÜNE4.4%
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 77 of 104 in canton SolothurnTax burden
Single, 100'000 CHF gross income
17'020 CHF(17%)
Rank 72 of 104 in the canton · 1852 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:17'020 CHF(~17%)
WalterswilCanton range SolothurnSwitzerland median
Show data table
| Gross income | Walterswil | 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 | 12.4% | 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 1991–20209.1 °C
Precipitation 1991–20201'097 mm
9.1 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
657 m
Mean elevation
519 m
Relief
223 m
Mean slope
8.1°
Flat share
29.9%
South-facing
39.1%
Above 2000 m
0.0%
Relief 223 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
11.4 GWh/yr
Roofs + façades
14.5 GWh/yr
≈ households powered
2'500
Per inhabitant
14'831 kWh/yr
11 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
32.09 Rp./kWh
Energy
13.45 Rp./kWh
Grid usage
13.78 Rp./kWh
Levies + grid surcharge
3.8 Rp./kWh
32.09 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
0.77 %
Second homes
11.8 %
Avg. rooms
4.3
Dwellings
388
Built before 194628.6%
Built since 200117.0%
0.77 %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
307
Workplaces
51
Services share
43.3 %
Jobs by sector: Primary 31 (10.1%) · Secondary 143 (46.6%) · Tertiary 133 (43.3%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
13
Organic share
0 %
Farmland
223 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 municipalities768 #85 SO · #1598 CHGrowing municipalities-0.5% #77 SO · #1653 CHShrinking municipalities-0.5% #28 SO · #455 CHJobs per resident0.4 #34 SO · #854 CHFamilies & children18.9% #69 SO · #1467 CHAge structure22.1% #54 SO · #838 CHWomen share50.5% #34 SO · #627 CHForeign residents15.1% #53 SO · #1272 CHPopulation density171/km² #70 SO · #1124 CHTax burden17'020 #74 SO · #1855 CHTaxes125% #77 SOWarmest municipalities9.1 °C #76 SO · #1310 CHSunniest municipalities39.7% #102 SO · #1991 CHRainiest municipalities1'097 mm #55 SO · #1123 CHVoter turnout44.6% #99 SO · #2018 CHSVP strongholds41.2% #6 SO · #610 CHSP strongholds10.3% #72 SO · #1492 CHCentre strongholds26.3% #23 SO · #319 CHFDP strongholds11.8% #90 SO · #1169 CHGLP strongholds3.4% #92 SO · #1510 CHGreen strongholds4.4% #85 SO · #1656 CHLargest by area4.5 km² #75 SO · #1626 CHHighest municipalities574 m #22 SO · #907 CHSecond homes11.8% #25 SO · #925 CHOrganic farming0% #99 SO · #1783 CHBest-connected municipalities77 min #90 SO · #1283 CHRemotest municipalities77 min #17 SO · #828 CHHighest peaks657 m #56 SO · #1338 CHHighest-lying municipalities519 m #49 SO · #1350 CHGreatest vertical range223 m #55 SO · #1258 CHSteepest municipalities8.1° #53 SO · #1102 CHSolar potential11 GWh #67 SO · #1450 CHSolar potential per capita14'831 kWh #7 SO · #433 CHCheapest electricity32.09 Rp./kWh #101 SO · #1998 CHMost expensive electricity32.09 Rp./kWh #4 SO · #108 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopo- What is the postal code of Walterswil?
- The postal code of Walterswil is 5746.
- What is the tax rate in Walterswil?
- The municipal tax multiplier of Walterswil is 125% (2026); canton SO levies 104%.
- How much tax do you pay in Walterswil?
- A single person without children pays about 17'020 CHF income tax in Walterswil on 100'000 CHF gross income (federal, cantonal, municipal), rank 72 of 104 in canton SO. Source: ESTV (2026).
- How many residents does Walterswil have?
- Walterswil has 768 residents (2025).
- How many foreign residents live in Walterswil?
- Walterswil has 116 foreign residents, a share of 15.1% (2025).
Map
OpenStreetMapWalterswil compared with
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