What is the postal code of Aeschi?

Aeschi has 2 postal codes: 3365, 4556.

What is the tax rate in Aeschi?

The municipal tax multiplier of Aeschi is 130% (2026); canton SO levies 104%.

How much tax do you pay in Aeschi?

A single person without children pays about 17'344 CHF income tax in Aeschi on 100'000 CHF gross income (federal, cantonal, municipal), rank 93 of 104 in canton SO. Source: ESTV (2026).

How many residents does Aeschi have?

Aeschi has 1'342 residents (2025).

How many foreign residents live in Aeschi?

Aeschi has 120 foreign residents, a share of 8.94% (2025).

Switzerland · Canton SO

Aeschi

3365–4556

SO CANTON3365 4556

Residents

1'342

Area

5.5 km²

Population density

245 pop./km²

Elevation

500 m a.s.l.

Tax multiplier

130%

Postal codes

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

Demographics

BFS · 2025

Women

667 49.7%

Men

675 50.3%

Children & youth (0–19)

228 17.0%

Swiss citizens

1'222 91.1%

Foreign residents

120 8.9%

Population density

245 pop./km²

0–19 · 228 · 17.0%20–64 · 770 · 57.4%65+ · 344 · 25.6%

Foreign residents 8.9%0%64.0%

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

Vote results for Aeschi

BFS

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

60.4% YesNo 39.6%

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

54.2% YesNo 45.9%

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

53.0% YesNo 47.0%

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

52.1% YesNo 47.9%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

46.0% YesNo 54.0%

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

24.0% YesNo 76.0%

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

38.1% YesNo 61.9%

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

36.9% YesNo 63.1%

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

71.6% YesNo 28.4%

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

44.5% YesNo 55.5%

All federal votes →

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

Politics

National Council election 2023

SVP27.9% · strongest party

SVP27.9%

Mitte19.6%

SP16.7%

FDP16.5%

GRÜNE8.3%

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

Taxes 2026

ESTV

Municipal tax multiplier130%

Cantonal tax multiplier104%

130%SO range 65%145%

Tax rank 93 of 104 in canton Solothurn

Tax burden

Single, 100'000 CHF gross income

17'344 CHF(17.3%)

Rank 93 of 104 in the canton · 1972 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:17'344 CHF(~17.3%)

AeschiCanton range SolothurnSwitzerland median

Show data table

Gross income	Aeschi	Solothurn	Switzerland median
40'000	8.2%	6.1–8.8%	5.4%
50'000	10.7%	7.9–11.4%	7.8%
60'000	12.7%	9.4–13.5%	10.5%
70'000	14.2%	10.5–15.1%	11.9%
80'000	15.4%	11.5–16.3%	13.1%
90'000	16.3%	12.2–17.3%	14.1%
100'000	17.3%	13–18.4%	15.3%
110'000	18.2%	13.8–19.3%	16.3%
120'000	19%	14.4–20.1%	17.2%
130'000	19.8%	15.1–20.9%	18.1%
140'000	20.6%	15.7–21.8%	19%
150'000	21.3%	16.4–22.5%	19.7%
175'000	23.1%	17.8–24.3%	21.6%
200'000	24.5%	19.1–25.8%	23.2%
225'000	25.7%	20.1–27%	24.6%
250'000	26.8%	21.1–28.2%	25.8%
275'000	27.7%	21.9–29.1%	26.8%
300'000	28.4%	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 1991–20209.3 °C

Precipitation 1991–20201'096 mm

9.3 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

595 m

Mean elevation

502 m

Relief

131 m

Mean slope

4.3°

Flat share

75.9%

South-facing

5.4%

Above 2000 m

0.0%

Relief 131 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

16 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 range H4

27.3–30.16 Rp./kWh

28.73 Rp./kWh9.6443.61

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

Network operators BKW Energie AG · Genossenschaft Elektra Äusseres Wasseramt EAW

This municipality is served by 2 network operators with different tariffs; the range spans the cheapest and the most expensive.

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

1.53 %

Avg. rooms

4.2

Dwellings

655

Built before 194622.0%

Built since 200124.7%

1.53 %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 42 min

AgglomerationPT 28 min · Car 10 min

Remoteness 30/104 in canton

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

Municipality

Wikidata · CC0

Websiteaeschi-so.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities1'342 #60 SO · #1253 CH Families & children17% #95 SO · #1819 CH Age structure25.6% #19 SO · #341 CH Women share49.7% #58 SO · #1131 CH Foreign residents8.9% #85 SO · #1794 CH Population density245/km² #61 SO · #904 CH Tax burden17'344 #93 SO · #1972 CH Taxes130% #93 SO Warmest municipalities9.3 °C #58 SO · #1146 CH Sunniest municipalities40.6% #41 SO · #1567 CH Rainiest municipalities1'096 mm #56 SO · #1129 CH Voter turnout57.7% #20 SO · #724 CH Against Switzerland10% #54 SO · #1225 CH Aligned with Switzerland90% #19 SO · #236 CH SVP strongholds27.9% #81 SO · #1405 CH SP strongholds16.7% #34 SO · #762 CH Centre strongholds19.6% #46 SO · #549 CH FDP strongholds16.5% #49 SO · #698 CH GLP strongholds7.5% #18 SO · #655 CH Green strongholds8.3% #35 SO · #816 CH Largest by area5.5 km² #60 SO · #1470 CH Highest municipalities500 m #38 SO · #1206 CH Remotest municipalities70 min #30 SO · #1028 CH Best-connected municipalities70 min #75 SO · #1078 CH Highest peaks595 m #65 SO · #1566 CH Highest-lying municipalities502 m #57 SO · #1418 CH Greatest vertical range131 m #71 SO · #1683 CH Steepest municipalities4.3° #75 SO · #1692 CH Solar potential12 GWh #64 SO · #1401 CH Cheapest electricity28.73 Rp./kWh #38 SO · #1219 CH Most expensive electricity28.73 Rp./kWh #67 SO · #888 CH

Postal codes (2)

swisstopo

Localities

swisstopo · 4

Aeschi SO4556 Burgäschi4556 Grasswil3365 Steinhof SO4556

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Aeschi?: Aeschi has 2 postal codes: 3365, 4556.
What is the tax rate in Aeschi?: The municipal tax multiplier of Aeschi is 130% (2026); canton SO levies 104%.
How much tax do you pay in Aeschi?: A single person without children pays about 17'344 CHF income tax in Aeschi on 100'000 CHF gross income (federal, cantonal, municipal), rank 93 of 104 in canton SO. Source: ESTV (2026).
How many residents does Aeschi have?: Aeschi has 1'342 residents (2025).
How many foreign residents live in Aeschi?: Aeschi has 120 foreign residents, a share of 8.94% (2025).

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