What is the postal code of Witterswil?

Witterswil has 2 postal codes: 4108, 4112.

What is the tax rate in Witterswil?

The municipal tax multiplier of Witterswil is 110% (2026); canton SO levies 104%.

How much tax do you pay in Witterswil?

A single person without children pays about 16'019 CHF income tax in Witterswil on 100'000 CHF gross income (federal, cantonal, municipal), rank 20 of 104 in canton SO. Source: ESTV (2026).

How many residents does Witterswil have?

Witterswil has 1'475 residents (2025).

How many foreign residents live in Witterswil?

Witterswil has 270 foreign residents, a share of 18.31% (2025).

Switzerland · Canton SO

Witterswil

4108–4112

SO CANTON4108 4112

Residents

1'475

Area

2.7 km²

Population density

552 pop./km²

Elevation

338 m a.s.l.

Tax multiplier

110%

Postal codes

Relief © swisstopo · TINITALY · geoland.at · LGL · IGN

Demographics

BFS · 2025

Women

751 50.9%

Men

724 49.1%

Children & youth (0–19)

301 20.4%

Swiss citizens

1'205 81.7%

Foreign residents

270 18.3%

Population density

552 pop./km²

0–19 · 301 · 20.4%20–64 · 827 · 56.1%65+ · 347 · 23.5%

Foreign residents 18.3%0%64.0%

STATPOP 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026 · swisstopo, retrieved 24.08.2026

Vote results for Witterswil

BFS

14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)Federal● Accepted · 52.5% Yes

54.7% YesNo 45.3%

14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected · 45.2% Yes

48.1% YesNo 51.9%

14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung des KantonsratsgesetzesCantonal SO● Accepted · 58.6% Yes

60.8% YesNo 39.2%

14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung der KantonsverfassungCantonal SO● Accepted · 58.7% Yes

61.5% YesNo 38.5%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

50.8% YesNo 49.2%

08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected · 29.3% Yes

27.6% YesNo 72.4%

08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected · 38.1% Yes

33.4% YesNo 66.6%

08.03.2026Bargeldinitiative und Gegenvorschlag: StichfrageFederal● Rejected · 37.4% Yes

38.5% YesNo 61.5%

08.03.2026Bundesbeschluss über die schweizerische Währung und die Bargeldversorgung (Gegenvorschlag zur Bargeldinitiative)Federal● Accepted · 73.4% Yes

72.9% YesNo 27.2%

08.03.2026Volksinitiative «Ja zu einer unabhängigen, freien Schweizer Währung mit Münzen oder Banknoten (Bargeld ist Freiheit)»Federal● Rejected · 45.6% Yes

43.8% YesNo 56.2%

All federal votes →

Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 31.08.2026

Politics

National Council election 2023

SVP26.9% · strongest party

SVP26.9%

Mitte19.1%

SP18.0%

FDP12.5%

GRÜNE10.7%

sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 31.08.2026

Taxes 2026

ESTV

Municipal tax multiplier110%

Cantonal tax multiplier104%

110%SO range 65%145%

Tax rank 20 of 104 in canton Solothurn

Tax burden

Single, 100'000 CHF gross income

16'019 CHF(16%)

Rank 20 of 104 in the canton · 1284 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

Income tax as % of gross income

100'000 CHF:16'019 CHF(~16%)

WitterswilCanton range SolothurnSwitzerland median

Show data table

Gross income	Witterswil	Solothurn	Switzerland median
40'000	7.6%	6.1–8.8%	5.4%
50'000	9.8%	7.9–11.4%	7.8%
60'000	11.7%	9.4–13.5%	10.5%
70'000	13.1%	10.5–15.1%	11.9%
80'000	14.2%	11.5–16.3%	13.1%
90'000	15%	12.2–17.3%	14.1%
100'000	16%	13–18.4%	15.3%
110'000	16.9%	13.8–19.3%	16.3%
120'000	17.6%	14.4–20.1%	17.2%
130'000	18.4%	15.1–20.9%	18.1%
140'000	19.1%	15.7–21.8%	19%
150'000	19.8%	16.4–22.5%	19.7%
175'000	21.4%	17.8–24.3%	21.6%
200'000	22.8%	19.1–25.8%	23.2%
225'000	24%	20.1–27%	24.6%
250'000	25.1%	21.1–28.2%	25.8%
275'000	25.9%	21.9–29.1%	26.8%
300'000	26.6%	22.5–29.8%	27.4%

2026 · Federal Tax Administration (FTA), retrieved 31.08.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–202010.7 °C

Precipitation 1991–2020932 mm

10.7 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

501 m

Mean elevation

361 m

Relief

179 m

Mean slope

6.5°

Flat share

61.9%

South-facing

5.6%

Above 2000 m

0.0%

Relief 179 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

Solar potential

BFE

Roof potential

12.3 GWh/yr

Roofs + façades

15.6 GWh/yr

≈ households powered

2'700

12 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 31.08.2026

Electricity

ElCom · 2026

Tariff H4

31.98 Rp./kWh

Energy

13.73 Rp./kWh

Grid usage

14.26 Rp./kWh

Levies + grid surcharge

2.92 Rp./kWh

31.98 Rp./kWh9.6443.61

Canton median 30.42 Rp./kWhSwiss median 27.7 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.

2026 · Federal Electricity Commission (ElCom), retrieved 28.08.2026

Housing

BFS

Vacancy rate

0.45 %

Avg. rooms

4.4

Dwellings

667

Built before 194613.5%

Built since 200118.3%

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 31.08.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026

Accessibility

ARE · NPVM

Major centrePT 33 min · Car 24 min

AgglomerationPT 33 min · Car 24 min

Remoteness 104/104 in canton

National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 28.08.2026

Municipality

Wikidata · CC0

Websitewitterswil.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities1'475 #55 SO · #1186 CH Families & children20.4% #37 SO · #1005 CH Age structure23.5% #35 SO · #583 CH Women share50.9% #18 SO · #442 CH Foreign residents18.3% #38 SO · #1011 CH Population density552/km² #28 SO · #470 CH Tax burden16'019 #20 SO · #1284 CH Taxes110% #20 SO Warmest municipalities10.7 °C #3 SO · #155 CH Sunniest municipalities42.1% #1 SO · #1112 CH Rainiest municipalities932 mm #102 SO · #1864 CH Voter turnout56.1% #27 SO · #928 CH Against Switzerland6% #67 SO · #1403 CH Aligned with Switzerland94% #4 SO · #53 CH SVP strongholds26.9% #86 SO · #1459 CH SP strongholds18% #27 SO · #618 CH Centre strongholds19.1% #49 SO · #576 CH FDP strongholds12.5% #86 SO · #1085 CH GLP strongholds7.4% #21 SO · #676 CH Green strongholds10.7% #21 SO · #473 CH Largest by area2.7 km² #90 SO · #1920 CH Highest municipalities338 m #103 SO · #2031 CH Remotest municipalities33 min #104 SO · #1988 CH Best-connected municipalities33 min #1 SO · #126 CH Highest peaks501 m #84 SO · #1874 CH Highest-lying municipalities361 m #104 SO · #2062 CH Greatest vertical range179 m #62 SO · #1448 CH Steepest municipalities6.5° #62 SO · #1317 CH Solar potential12 GWh #63 SO · #1399 CH Cheapest electricity31.98 Rp./kWh #72 SO · #1878 CH Most expensive electricity31.98 Rp./kWh #31 SO · #204 CH

Postal codes (2)

swisstopo

Localities

swisstopo · 2

Bättwil4112 Witterswil4108

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Witterswil?: Witterswil has 2 postal codes: 4108, 4112.
What is the tax rate in Witterswil?: The municipal tax multiplier of Witterswil is 110% (2026); canton SO levies 104%.
How much tax do you pay in Witterswil?: A single person without children pays about 16'019 CHF income tax in Witterswil on 100'000 CHF gross income (federal, cantonal, municipal), rank 20 of 104 in canton SO. Source: ESTV (2026).
How many residents does Witterswil have?: Witterswil has 1'475 residents (2025).
How many foreign residents live in Witterswil?: Witterswil has 270 foreign residents, a share of 18.31% (2025).

Map

OpenStreetMap

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