What is the postal code of Biezwil?

The postal code of Biezwil is 4585.

What is the tax rate in Biezwil?

The municipal tax multiplier of Biezwil is 125% (2026); canton SO levies 104%.

How much tax do you pay in Biezwil?

A single person without children pays about 17'030 CHF income tax in Biezwil on 100'000 CHF gross income (federal, cantonal, municipal), rank 75 of 104 in canton SO. Source: ESTV (2026).

How many residents does Biezwil have?

Biezwil has 345 residents (2025).

How many foreign residents live in Biezwil?

Biezwil has 17 foreign residents, a share of 4.93% (2025).

Switzerland · Canton SO

Biezwil

4585

SO CANTON4585

Residents

345

Area

4.2 km²

Population density

83 pop./km²

Elevation

586 m a.s.l.

Tax multiplier

125%

Postal codes

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

Demographics

BFS · 2025

Women

163 47.2%

Men

182 52.8%

Children & youth (0–19)

70 20.3%

Swiss citizens

328 95.1%

Foreign residents

17 4.9%

Population density

83 pop./km²

0–19 · 70 · 20.3%20–64 · 183 · 53.0%65+ · 92 · 26.7%

Foreign residents 4.9%0%64.0%

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

Vote results for Biezwil

BFS

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

69.1% YesNo 30.9%

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

62.7% YesNo 37.3%

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

44.6% YesNo 55.4%

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

44.6% YesNo 55.4%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

48.8% YesNo 51.2%

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

14.8% YesNo 85.2%

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

46.2% YesNo 53.8%

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

43.9% YesNo 56.1%

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

72.7% YesNo 27.3%

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

48.5% YesNo 51.5%

All federal votes →

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

Politics

National Council election 2023

SVP38.0% · strongest party

SVP38.0%

FDP32.6%

SP7.9%

Mitte7.7%

GRÜNE6.0%

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

Taxes 2026

ESTV

Municipal tax multiplier125%

Cantonal tax multiplier104%

125%SO range 65%145%

Tax rank 82 of 104 in canton Solothurn

Tax burden

Single, 100'000 CHF gross income

17'030 CHF(17%)

Rank 75 of 104 in the canton · 1857 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:17'030 CHF(~17%)

BiezwilCanton range SolothurnSwitzerland median

Show data table

Gross income	Biezwil	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	19.5%	15.1–20.9%	18.1%
140'000	20.3%	15.7–21.8%	19%
150'000	21%	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 31.08.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–20209.1 °C

Precipitation 1991–20201'147 mm

9.1 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

671 m

Mean elevation

600 m

Relief

140 m

Mean slope

5.8°

Flat share

46.1%

South-facing

8.2%

Above 2000 m

0.0%

Relief 140 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

5.3 GWh/yr

Roofs + façades

6.7 GWh/yr

≈ households powered

1'200

5 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

37.09 Rp./kWh

Energy

14.9 Rp./kWh

Grid usage

18.02 Rp./kWh

Levies + grid surcharge

2.3 Rp./kWh

37.09 Rp./kWh9.6443.61

Canton median 30.42 Rp./kWhSwiss median 27.7 Rp./kWh

Network operator GEBNET 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 %

Avg. rooms

4.4

Dwellings

166

Built before 194646.4%

Built since 200117.5%

0 %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 69 min · Car 39 min

AgglomerationPT 38 min · Car 21 min

Remoteness 32/104 in canton

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

Municipality

Wikidata · CC0

Websitebiezwil.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities345 #98 SO · #1927 CH Families & children20.3% #39 SO · #1032 CH Age structure26.7% #10 SO · #255 CH Women share47.2% #98 SO · #1985 CH Foreign residents4.9% #102 SO · #2015 CH Population density83/km² #92 SO · #1575 CH Tax burden17'030 #76 SO · #1858 CH Taxes125% #82 SO Warmest municipalities9.1 °C #73 SO · #1307 CH Sunniest municipalities40.5% #45 SO · #1605 CH Rainiest municipalities1'147 mm #34 SO · #843 CH Voter turnout58.8% #11 SO · #600 CH SVP strongholds38% #22 SO · #769 CH SP strongholds7.9% #84 SO · #1697 CH Centre strongholds7.7% #102 SO · #1475 CH FDP strongholds32.6% #3 SO · #53 CH GLP strongholds3.5% #88 SO · #1489 CH Green strongholds6% #64 SO · #1323 CH Largest by area4.2 km² #78 SO · #1679 CH Highest municipalities586 m #18 SO · #864 CH Remotest municipalities69 min #32 SO · #1056 CH Best-connected municipalities69 min #72 SO · #1054 CH Highest peaks671 m #54 SO · #1288 CH Highest-lying municipalities600 m #32 SO · #1009 CH Greatest vertical range140 m #68 SO · #1640 CH Steepest municipalities5.8° #67 SO · #1424 CH Solar potential5 GWh #94 SO · #1883 CH Cheapest electricity37.09 Rp./kWh #103 SO · #2091 CH Most expensive electricity37.09 Rp./kWh #2 SO · #16 CH

Postal codes (1)

swisstopo

4585

Biezwil

Localities

swisstopo · 1

Biezwil4585

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Biezwil?: The postal code of Biezwil is 4585.
What is the tax rate in Biezwil?: The municipal tax multiplier of Biezwil is 125% (2026); canton SO levies 104%.
How much tax do you pay in Biezwil?: A single person without children pays about 17'030 CHF income tax in Biezwil on 100'000 CHF gross income (federal, cantonal, municipal), rank 75 of 104 in canton SO. Source: ESTV (2026).
How many residents does Biezwil have?: Biezwil has 345 residents (2025).
How many foreign residents live in Biezwil?: Biezwil has 17 foreign residents, a share of 4.93% (2025).

Map

OpenStreetMap

Compare

Biezwil compared with