What is the postal code of Flumenthal?

Flumenthal has 2 postal codes: 4534, 4543.

What is the tax rate in Flumenthal?

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

How much tax do you pay in Flumenthal?

A single person without children pays about 17'060 CHF income tax in Flumenthal on 100'000 CHF gross income (federal, cantonal, municipal), rank 81 of 104 in canton SO. Source: ESTV (2026).

How many residents does Flumenthal have?

Flumenthal has 1'023 residents (2025).

How many foreign residents live in Flumenthal?

Flumenthal has 151 foreign residents, a share of 14.76% (2025).

Switzerland · Canton SO

Flumenthal

4534–4543

SO CANTON4534 4543

Residents

1'023

Area

3.1 km²

Population density

329 pop./km²

Elevation

430 m a.s.l.

Tax multiplier

125%

Postal codes

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

Demographics

BFS · 2025

Women

522 51.0%

Men

501 49.0%

Children & youth (0–19)

168 16.4%

Swiss citizens

872 85.2%

Foreign residents

151 14.8%

Population density

329 pop./km²

0–19 · 168 · 16.4%20–64 · 641 · 62.7%65+ · 214 · 20.9%

Foreign residents 14.8%0%64.0%

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

Vote results for Flumenthal

BFS

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

59.0% YesNo 41.0%

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

63.4% YesNo 36.6%

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

51.2% YesNo 48.8%

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

51.2% YesNo 48.8%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

59.0% YesNo 41.0%

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

22.6% YesNo 77.4%

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

44.1% YesNo 55.9%

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

44.4% YesNo 55.6%

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

65.8% YesNo 34.2%

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

46.8% YesNo 53.3%

All federal votes →

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

Politics

National Council election 2023

SVP34.1% · strongest party

SVP34.1%

SP18.8%

FDP18.6%

Mitte12.6%

GRÜNE7.8%

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 79 of 104 in canton Solothurn

Tax burden

Single, 100'000 CHF gross income

17'060 CHF(17.1%)

Rank 81 of 104 in the canton · 1884 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:17'060 CHF(~17.1%)

FlumenthalCanton range SolothurnSwitzerland median

Show data table

Gross income	Flumenthal	Solothurn	Switzerland median
40'000	8.2%	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	15.1%	11.5–16.3%	13.1%
90'000	16%	12.2–17.3%	14.1%
100'000	17.1%	13–18.4%	15.3%
110'000	17.9%	13.8–19.3%	16.3%
120'000	18.7%	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 1991–20209.6 °C

Precipitation 1991–20201'156 mm

9.6 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

490 m

Mean elevation

441 m

Relief

72 m

Mean slope

3.6°

Flat share

75.9%

South-facing

12.6%

Above 2000 m

0.0%

Relief 72 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

10.5 GWh/yr

Roofs + façades

13.7 GWh/yr

≈ households powered

2'300

10 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

27.3 Rp./kWh

Energy

10.89 Rp./kWh

Grid usage

11.25 Rp./kWh

Levies + grid surcharge

3.4 Rp./kWh

27.3 Rp./kWh9.6443.61

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

Network operator BKW Energie 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

1.69 %

Avg. rooms

4.1

Dwellings

533

Built before 194629.6%

Built since 200114.4%

1.69 %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 71 min · Car 42 min

AgglomerationPT 26 min · Car 16 min

Remoteness 27/104 in canton

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

Municipality

Wikidata · CC0

Websiteflumenthal.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities1'023 #75 SO · #1444 CH Families & children16.4% #98 SO · #1888 CH Age structure20.9% #71 SO · #1060 CH Women share51% #15 SO · #391 CH Foreign residents14.8% #56 SO · #1300 CH Population density329/km² #46 SO · #718 CH Tax burden17'060 #81 SO · #1884 CH Taxes125% #79 SO Warmest municipalities9.6 °C #33 SO · #883 CH Sunniest municipalities40.2% #71 SO · #1740 CH Rainiest municipalities1'156 mm #27 SO · #818 CH Voter turnout48.5% #87 SO · #1823 CH Against Switzerland19.2% #16 SO · #583 CH Aligned with Switzerland80.8% #60 SO · #871 CH SVP strongholds34.1% #39 SO · #1029 CH SP strongholds18.8% #23 SO · #550 CH Centre strongholds12.6% #84 SO · #985 CH FDP strongholds18.6% #35 SO · #547 CH GLP strongholds5.4% #56 SO · #1104 CH Green strongholds7.8% #39 SO · #912 CH Largest by area3.1 km² #86 SO · #1849 CH Highest municipalities430 m #85 SO · #1705 CH Remotest municipalities71 min #27 SO · #1001 CH Best-connected municipalities71 min #79 SO · #1112 CH Highest peaks490 m #90 SO · #1913 CH Highest-lying municipalities441 m #85 SO · #1791 CH Greatest vertical range72 m #84 SO · #1954 CH Steepest municipalities3.6° #82 SO · #1819 CH Solar potential10 GWh #74 SO · #1518 CH Cheapest electricity27.3 Rp./kWh #19 SO · #750 CH Most expensive electricity27.3 Rp./kWh #88 SO · #1360 CH

Postal codes (2)

swisstopo

Localities

swisstopo · 2

Deitingen4543 Flumenthal4534

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Flumenthal?: Flumenthal has 2 postal codes: 4534, 4543.
What is the tax rate in Flumenthal?: The municipal tax multiplier of Flumenthal is 125% (2026); canton SO levies 104%.
How much tax do you pay in Flumenthal?: A single person without children pays about 17'060 CHF income tax in Flumenthal on 100'000 CHF gross income (federal, cantonal, municipal), rank 81 of 104 in canton SO. Source: ESTV (2026).
How many residents does Flumenthal have?: Flumenthal has 1'023 residents (2025).
How many foreign residents live in Flumenthal?: Flumenthal has 151 foreign residents, a share of 14.76% (2025).

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