What is the postal code of Lostorf?

Lostorf has 2 postal codes: 4634, 4654.

What is the tax rate in Lostorf?

The municipal tax multiplier of Lostorf is 113% (2026); canton SO levies 104%.

How much tax do you pay in Lostorf?

A single person without children pays about 16'210 CHF income tax in Lostorf on 100'000 CHF gross income (federal, cantonal, municipal), rank 27 of 104 in canton SO. Source: ESTV (2026).

How many residents does Lostorf have?

Lostorf has 4'113 residents (2025).

How many foreign residents live in Lostorf?

Lostorf has 511 foreign residents, a share of 12.42% (2025).

Switzerland · Canton SO

Lostorf

4634–4654

SO CANTON4634 4654

Residents

4'113

Area

13.3 km²

Population density

310 pop./km²

Elevation

523 m a.s.l.

Terrain up to

936 m a.s.l.

Tax multiplier

113%

Postal codes

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

Demographics

BFS · 2025

Women

2'038 49.6%

Men

2'075 50.4%

Children & youth (0–19)

785 19.1%

Swiss citizens

3'602 87.6%

Foreign residents

511 12.4%

Population density

310 pop./km²

0–19 · 785 · 19.1%20–64 · 2'361 · 57.4%65+ · 967 · 23.5%

Foreign residents 12.4%0%64.0%

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

Vote results for Lostorf

BFS

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

56.8% YesNo 43.2%

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

52.3% YesNo 47.7%

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

59.2% YesNo 40.8%

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

59.4% YesNo 40.6%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

51.9% YesNo 48.1%

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

20.8% YesNo 79.2%

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

41.3% YesNo 58.7%

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

35.8% YesNo 64.2%

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

74.1% YesNo 25.9%

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

44.2% YesNo 55.8%

All federal votes →

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

Politics

National Council election 2023

SVP29.1% · strongest party

SVP29.1%

Mitte19.8%

FDP18.8%

SP15.8%

GRÜNE6.4%

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

Taxes 2026

ESTV

Municipal tax multiplier113%

Cantonal tax multiplier104%

113%SO range 65%145%

Tax rank 28 of 104 in canton Solothurn

Tax burden

Single, 100'000 CHF gross income

16'210 CHF(16.2%)

Rank 27 of 104 in the canton · 1392 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:16'210 CHF(~16.2%)

LostorfCanton range SolothurnSwitzerland median

Show data table

Gross income	Lostorf	Solothurn	Switzerland median
40'000	7.6%	6.1–8.8%	5.4%
50'000	9.9%	7.9–11.4%	7.8%
60'000	11.8%	9.4–13.5%	10.5%
70'000	13.2%	10.5–15.1%	11.9%
80'000	14.4%	11.5–16.3%	13.1%
90'000	15.2%	12.2–17.3%	14.1%
100'000	16.2%	13–18.4%	15.3%
110'000	17.1%	13.8–19.3%	16.3%
120'000	17.8%	14.4–20.1%	17.2%
130'000	18.6%	15.1–20.9%	18.1%
140'000	19.3%	15.7–21.8%	19%
150'000	20%	16.4–22.5%	19.7%
175'000	21.7%	17.8–24.3%	21.6%
200'000	23.1%	19.1–25.8%	23.2%
225'000	24.3%	20.1–27%	24.6%
250'000	25.3%	21.1–28.2%	25.8%
275'000	26.2%	21.9–29.1%	26.8%
300'000	26.9%	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 °C

Precipitation 1991–20201'086 mm

9 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

936 m

Mean elevation

596 m

Relief

530 m

Mean slope

13.8°

Flat share

23.6%

South-facing

42.1%

Above 2000 m

0.0%

Relief 530 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

33.4 GWh/yr

Roofs + façades

43.5 GWh/yr

≈ households powered

7'400

33 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

32.19 Rp./kWh

Energy

15.2 Rp./kWh

Grid usage

12.62 Rp./kWh

Levies + grid surcharge

3.3 Rp./kWh

32.19 Rp./kWh9.6443.61

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

Network operator Aare Versorgungs AG (AVAG)

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

3.38 %

Avg. rooms

4.2

Dwellings

1'982

Built before 194614.1%

Built since 200122.9%

3.38 %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 70 min · Car 60 min

AgglomerationPT 30 min · Car 19 min

Remoteness 29/104 in canton

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

Municipality

Wikidata · CC0

Websitelostorf.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities4'113 #21 SO · #541 CH Families & children19.1% #64 SO · #1420 CH Age structure23.5% #36 SO · #584 CH Women share49.6% #60 SO · #1201 CH Foreign residents12.4% #69 SO · #1503 CH Population density310/km² #52 SO · #762 CH Tax burden16'210 #29 SO · #1394 CH Taxes113% #28 SO Warmest municipalities9 °C #82 SO · #1368 CH Sunniest municipalities40.4% #50 SO · #1643 CH Rainiest municipalities1'086 mm #68 SO · #1176 CH Voter turnout58.2% #13 SO · #668 CH Against Switzerland14% #30 SO · #1001 CH Aligned with Switzerland86% #40 SO · #457 CH SVP strongholds29.1% #73 SO · #1324 CH SP strongholds15.8% #41 SO · #857 CH Centre strongholds19.8% #44 SO · #535 CH FDP strongholds18.8% #34 SO · #536 CH GLP strongholds6% #43 SO · #970 CH Green strongholds6.4% #56 SO · #1222 CH Largest by area13.3 km² #13 SO · #736 CH Highest municipalities523 m #31 SO · #1107 CH Remotest municipalities70 min #29 SO · #1027 CH Best-connected municipalities70 min #74 SO · #1077 CH Highest peaks936 m #31 SO · #781 CH Highest-lying municipalities596 m #34 SO · #1021 CH Greatest vertical range530 m #25 SO · #670 CH Steepest municipalities13.8° #31 SO · #635 CH Solar potential33 GWh #25 SO · #604 CH Cheapest electricity32.19 Rp./kWh #86 SO · #1924 CH Most expensive electricity32.19 Rp./kWh #19 SO · #183 CH

Postal codes (2)

swisstopo

Localities

swisstopo · 2

Lostorf4654 Wisen SO4634

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Lostorf?: Lostorf has 2 postal codes: 4634, 4654.
What is the tax rate in Lostorf?: The municipal tax multiplier of Lostorf is 113% (2026); canton SO levies 104%.
How much tax do you pay in Lostorf?: A single person without children pays about 16'210 CHF income tax in Lostorf on 100'000 CHF gross income (federal, cantonal, municipal), rank 27 of 104 in canton SO. Source: ESTV (2026).
How many residents does Lostorf have?: Lostorf has 4'113 residents (2025).
How many foreign residents live in Lostorf?: Lostorf has 511 foreign residents, a share of 12.42% (2025).

Map

OpenStreetMap

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