Demographics
BFS · 2025Women
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%
Population change 2025: +14 (+1.1%) · 6 births · 12 deaths · net migration +23
STATPOP 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026 · swisstopo, retrieved 24.09.2026 · BEVNAT (Statistik der natürlichen Bevölkerungsbewegung) 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026
27.09.2026Popular Initiative 'For food security – through increased sustainable domestic production, more plant-based food and clean drinking water (Food Initiative)'Federal● Rejected · 27.5% YesDistrict Bezirk Wasseramt: 24.2% Yes
20.4% YesNo 79.6%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Wasseramt: 25.9% Yes
27.7% YesNo 72.3%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Wasseramt: 54.5% Yes
60.4% YesNo 39.6%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Wasseramt: 50.5% Yes
54.2% YesNo 45.9%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung des KantonsratsgesetzesCantonal SO● Accepted · 58.6% YesDistrict Bezirk Wasseramt: 58.2% Yes
53.0% YesNo 47.0%
14.06.2026Stellvertretung im Kantonsrat bei Mutterschaft: Änderung der KantonsverfassungCantonal SO● Accepted · 58.7% YesDistrict Bezirk Wasseramt: 58.4% Yes
52.1% YesNo 47.9%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Wasseramt: 54.4% Yes
46.0% YesNo 54.0%
08.03.2026Popular Initiative ‘For a fair energy and climate policy: Investing for prosperity, jobs and the environment (Climate Fund Initiative)’Federal● Rejected · 29.3% YesDistrict Bezirk Wasseramt: 24.0% Yes
24.0% YesNo 76.0%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Wasseramt: 40.5% Yes
38.1% YesNo 61.9%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Wasseramt: 39.9% Yes
36.9% YesNo 63.1%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023SVP27.9% · strongest party
SVP27.9%
Mitte19.6%
SP16.7%
FDP16.5%
GRÜNE8.3%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier130%
Cantonal tax multiplier104%
130%SO range 65%145%
Tax rank 93 of 104 in canton SolothurnTax 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
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 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual 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 mHighest 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
Roof potential
12.3 GWh/yr
Roofs + façades
16 GWh/yr
≈ households powered
2'700
Per inhabitant
9'136 kWh/yr
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 24.09.2026
Electricity
ElCom · 2027Tariff range H4
25.19–30.16 Rp./kWh
27.67 Rp./kWh10.5645.88
Canton median 28.51 Rp./kWhSwiss median 26.53 Rp./kWh
Network operators BKW Energie AG · Genossenschaft Elektra Äusseres Wasseramt EAW
ElCom tariff comparison ↗This municipality is served by 2 network operators with different tariffs; the range spans the cheapest and the most expensive.
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.
2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026
Health-insurance premiums
BAG · 2024Standard model, deductible 300606 CHF/mo
Ø premium in canton Solothurn424 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo
Premiums are set not per municipality but per canton and premium region. Shown is the average adult premium paid in canton Solothurn (2024, BAG) — it applies canton-wide, not to any single location.
2024 · Federal Office of Public Health (FOPH), retrieved 12.09.2026
Housing
BFS · AREVacancy rate
1.53 %
Second homes
8.4 %
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 24.09.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026 · Dwelling inventory and second-home share 2026 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Economy
BFS · 2024Jobs
257
Workplaces
66
Services share
62.6 %
Jobs by sector: Primary 42 (16.3%) · Secondary 54 (21.0%) · Tertiary 161 (62.6%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
13
Organic share
7.7 %
Farmland
300 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026
Accessibility
ARE · NPVMNational Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Municipality
Wikidata · CC0Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities1'342 #60 SO · #1253 CHGrowing municipalities1.1% #36 SO · #761 CHShrinking municipalities1.1% #69 SO · #1347 CHJobs per resident0.19 #83 SO · #1823 CHFamilies & children17% #95 SO · #1819 CHAge structure25.6% #19 SO · #341 CHWomen share49.7% #58 SO · #1131 CHForeign residents8.9% #85 SO · #1794 CHPopulation density245/km² #61 SO · #904 CHTax burden17'344 #93 SO · #1972 CHTaxes130% #93 SOWarmest municipalities9.3 °C #58 SO · #1146 CHSunniest municipalities40.6% #41 SO · #1567 CHRainiest municipalities1'096 mm #56 SO · #1129 CHVoter turnout59.6% #13 SO · #633 CHAgainst Switzerland9.8% #54 SO · #1225 CHAligned with Switzerland90.2% #19 SO · #236 CHSVP strongholds27.9% #81 SO · #1407 CHSP strongholds16.7% #36 SO · #768 CHCentre strongholds19.6% #46 SO · #550 CHFDP strongholds16.5% #49 SO · #699 CHGLP strongholds7.5% #18 SO · #656 CHGreen strongholds8.3% #35 SO · #821 CHLargest by area5.5 km² #60 SO · #1470 CHHighest municipalities500 m #38 SO · #1206 CHSecond homes8.4% #69 SO · #1521 CHOrganic farming7.7% #63 SO · #1382 CHBest-connected municipalities70 min #75 SO · #1078 CHRemotest municipalities70 min #29 SO · #1027 CHHighest peaks595 m #65 SO · #1566 CHHighest-lying municipalities502 m #57 SO · #1418 CHGreatest vertical range131 m #71 SO · #1683 CHSteepest municipalities4.3° #75 SO · #1692 CHSolar potential12 GWh #64 SO · #1401 CHSolar potential per capita9'136 kWh #55 SO · #1231 CHCheapest electricity27.67 Rp./kWh #41 SO · #1191 CHMost expensive electricity27.67 Rp./kWh #64 SO · #916 CH
Postal codes (2)
swisstopoLocalities
swisstopo · 4Nearby municipalities
swisstopo- 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).
Map
OpenStreetMapAeschi compared with
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