Demographics
BFS · 2025Women
4'361 50.4%
Men
4'290 49.6%
Children & youth (0–19)
1'893 21.9%
Swiss citizens
5'374 62.1%
Foreign residents
3'277 37.9%
Population density
1'626 pop./km²
0–19 · 1'893 · 21.9%20–64 · 5'284 · 61.1%65+ · 1'474 · 17.0%
Foreign residents 37.9%0%64.0%
Population change 2025: +160 (+1.9%) · 93 births · 61 deaths · net migration +86
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
14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)Federal● Accepted · 52.5% YesDistrict Bezirk Aarau: 51.7% Yes
50.5% YesNo 49.5%
14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected · 45.2% YesDistrict Bezirk Aarau: 43.2% Yes
45.2% YesNo 54.8%
14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% YesDistrict Bezirk Aarau: 45.3% Yes
45.2% YesNo 54.8%
14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% YesDistrict Bezirk Aarau: 67.7% Yes
69.2% YesNo 30.8%
08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% YesDistrict Bezirk Aarau: 53.7% Yes
52.0% YesNo 48.0%
08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected · 29.3% YesDistrict Bezirk Aarau: 31.0% Yes
29.6% YesNo 70.4%
08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected · 38.1% YesDistrict Bezirk Aarau: 35.4% Yes
39.6% YesNo 60.4%
08.03.2026Bargeldinitiative und Gegenvorschlag: StichfrageFederal● Rejected · 37.4% YesDistrict Bezirk Aarau: 31.8% Yes
33.7% YesNo 66.4%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 21.09.2026
Politics
National Council election 2023SVP31.0% · strongest party
SVP31.0%
SP18.7%
FDP15.2%
GLP9.0%
Mitte8.9%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier118%
Cantonal tax multiplier103%
118%AG range 48%127%
Tax rank 158 of 196 in canton AargauTax burden
Single, 100'000 CHF gross income
13'485 CHF(13.5%)
Rank 158 of 196 in the canton · 688 of 2110 in Switzerland
Median canton 12'952 CHF · median Switzerland 15'290 CHF
Cheapest Oberwil-Lieli 9'753 CHF · most expensive Ammerswil 13'965 CHF
100'000 CHF:13'485 CHF(~13.5%)
BuchsCanton range AargauSwitzerland median
Show data table
| Gross income | Buchs | Aargau | Switzerland median |
|---|---|---|---|
| 40'000 | 5.4% | 3.8–5.6% | 5.4% |
| 50'000 | 7.4% | 5.2–7.7% | 7.8% |
| 60'000 | 9% | 6.4–9.3% | 10.5% |
| 70'000 | 10.4% | 7.4–10.7% | 11.9% |
| 80'000 | 11.5% | 8.2–11.9% | 13.1% |
| 90'000 | 12.4% | 8.9–12.8% | 14.1% |
| 100'000 | 13.5% | 9.8–14% | 15.3% |
| 110'000 | 14.4% | 10.5–14.9% | 16.3% |
| 120'000 | 15.2% | 11.2–15.8% | 17.2% |
| 130'000 | 16% | 11.7–16.5% | 18.1% |
| 140'000 | 16.7% | 12.4–17.3% | 19% |
| 150'000 | 17.4% | 13–18% | 19.7% |
| 175'000 | 19.1% | 14.4–19.7% | 21.6% |
| 200'000 | 20.5% | 15.5–21.1% | 23.2% |
| 225'000 | 21.8% | 16.6–22.4% | 24.6% |
| 250'000 | 22.9% | 17.6–23.6% | 25.8% |
| 275'000 | 23.8% | 18.4–24.5% | 26.8% |
| 300'000 | 24.6% | 19.1–25.3% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–202010 °C
Precipitation 1991–2020910 mm
10 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
396 m
Mean elevation
382 m
Relief
33 m
Mean slope
1.6°
Flat share
93.1%
South-facing
0.4%
Above 2000 m
0.0%
Relief 33 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
52.8 GWh/yr
Roofs + façades
69.1 GWh/yr
≈ households powered
11'700
Per inhabitant
6'103 kWh/yr
53 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 H4
25.36 Rp./kWh
Energy
9.68 Rp./kWh
Grid usage
10.88 Rp./kWh
Levies + grid surcharge
3.15 Rp./kWh
25.36 Rp./kWh10.5645.88
Canton median 26.88 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Eniwa 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.
2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026
Health-insurance premiums
BAG · 2024Standard model, deductible 300570 CHF/mo
Ø premium in canton Aargau392 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 Aargau (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
0.67 %
Second homes
5.3 %
Avg. rooms
3.7
Dwellings
3'907
Built before 194617.2%
Built since 200128.2%
0.67 %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
5'704
Workplaces
416
Services share
61.1 %
Jobs by sector: Primary 11 (0.2%) · Secondary 2'210 (38.7%) · Tertiary 3'483 (61.1%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
1
Organic share
0 %
Farmland
53 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 municipalities8'651 #23 AG · #231 CHGrowing municipalities1.9% #45 AG · #386 CHShrinking municipalities1.9% #151 AG · #1723 CHJobs per resident0.66 #18 AG · #261 CHFamilies & children21.9% #39 AG · #568 CHAge structure17% #162 AG · #1774 CHWomen share50.4% #31 AG · #692 CHForeign residents37.9% #15 AG · #100 CHPopulation density1'626/km² #8 AG · #103 CHTax burden13'485 #158 AG · #688 CHTaxes118% #158 AGWarmest municipalities10 °C #52 AG · #516 CHSunniest municipalities40% #131 AG · #1888 CHRainiest municipalities910 mm #195 AG · #1922 CHVoter turnout53% #122 AG · #1353 CHAgainst Switzerland3% #164 AG · #1455 CHAligned with Switzerland97% #1 AG · #6 CHSVP strongholds31% #174 AG · #1213 CHSP strongholds18.7% #23 AG · #564 CHCentre strongholds8.9% #137 AG · #1324 CHFDP strongholds15.2% #30 AG · #806 CHGLP strongholds9% #47 AG · #432 CHGreen strongholds7.1% #45 AG · #1074 CHLargest by area5.3 km² #115 AG · #1512 CHHighest municipalities386 m #149 AG · #1951 CHSecond homes5.3% #176 AG · #2028 CHOrganic farming0% #138 AG · #1833 CHBest-connected municipalities59 min #67 AG · #750 CHRemotest municipalities59 min #125 AG · #1373 CHHighest peaks396 m #193 AG · #2091 CHHighest-lying municipalities382 m #177 AG · #2021 CHGreatest vertical range33 m #195 AG · #2079 CHSteepest municipalities1.6° #196 AG · #2038 CHSolar potential53 GWh #24 AG · #295 CHSolar potential per capita6'103 kWh #163 AG · #1820 CHCheapest electricity25.36 Rp./kWh #29 AG · #497 CHMost expensive electricity25.36 Rp./kWh #158 AG · #1602 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopo- What is the postal code of Buchs?
- The postal code of Buchs is 5033.
- What is the tax rate in Buchs?
- The municipal tax multiplier of Buchs is 118% (2026); canton AG levies 103%.
- How much tax do you pay in Buchs?
- A single person without children pays about 13'485 CHF income tax in Buchs on 100'000 CHF gross income (federal, cantonal, municipal), rank 158 of 196 in canton AG. Source: ESTV (2026).
- How many residents does Buchs have?
- Buchs has 8'651 residents (2025).
- How many foreign residents live in Buchs?
- Buchs has 3'277 foreign residents, a share of 37.88% (2025).
Map
OpenStreetMapBuchs compared with
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