Demographics
BFS · 2025Women
976 50.0%
Men
977 50.0%
Children & youth (0–19)
402 20.6%
Swiss citizens
1'690 86.5%
Foreign residents
263 13.5%
Population density
580 pop./km²
0–19 · 402 · 20.6%20–64 · 1'159 · 59.3%65+ · 392 · 20.1%
Foreign residents 13.5%0%64.0%
Population change 2025: −34 (−1.7%) · 9 births · 9 deaths · net migration −31
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 Bremgarten: 58.4% Yes
59.7% YesNo 40.3%
14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected · 45.2% YesDistrict Bezirk Bremgarten: 54.9% Yes
49.3% YesNo 50.7%
14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% YesDistrict Bezirk Bremgarten: 40.2% Yes
43.5% YesNo 56.5%
14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% YesDistrict Bezirk Bremgarten: 49.3% Yes
48.9% YesNo 51.1%
08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% YesDistrict Bezirk Bremgarten: 48.4% Yes
54.9% YesNo 45.1%
08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected · 29.3% YesDistrict Bezirk Bremgarten: 20.5% Yes
18.3% YesNo 81.7%
08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected · 38.1% YesDistrict Bezirk Bremgarten: 44.8% Yes
37.7% YesNo 62.3%
08.03.2026Bargeldinitiative und Gegenvorschlag: StichfrageFederal● Rejected · 37.4% YesDistrict Bezirk Bremgarten: 38.6% Yes
34.3% YesNo 65.7%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 21.09.2026
Politics
National Council election 2023SVP37.3% · strongest party
SVP37.3%
FDP14.9%
Mitte11.5%
GLP11.2%
SP10.8%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier83%
Cantonal tax multiplier103%
83%AG range 48%127%
Tax rank 13 of 196 in canton AargauTax burden
Single, 100'000 CHF gross income
11'619 CHF(11.6%)
Rank 12 of 196 in the canton · 234 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:11'619 CHF(~11.6%)
ArniCanton range AargauSwitzerland median
Show data table
| Gross income | Arni | Aargau | Switzerland median |
|---|---|---|---|
| 40'000 | 4.6% | 3.8–5.6% | 5.4% |
| 50'000 | 6.3% | 5.2–7.7% | 7.8% |
| 60'000 | 7.7% | 6.4–9.3% | 10.5% |
| 70'000 | 8.9% | 7.4–10.7% | 11.9% |
| 80'000 | 9.8% | 8.2–11.9% | 13.1% |
| 90'000 | 10.6% | 8.9–12.8% | 14.1% |
| 100'000 | 11.6% | 9.8–14% | 15.3% |
| 110'000 | 12.5% | 10.5–14.9% | 16.3% |
| 120'000 | 13.2% | 11.2–15.8% | 17.2% |
| 130'000 | 13.8% | 11.7–16.5% | 18.1% |
| 140'000 | 14.6% | 12.4–17.3% | 19% |
| 150'000 | 15.2% | 13–18% | 19.7% |
| 175'000 | 16.7% | 14.4–19.7% | 21.6% |
| 200'000 | 18% | 15.5–21.1% | 23.2% |
| 225'000 | 19.2% | 16.6–22.4% | 24.6% |
| 250'000 | 20.3% | 17.6–23.6% | 25.8% |
| 275'000 | 21.1% | 18.4–24.5% | 26.8% |
| 300'000 | 21.9% | 19.1–25.3% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–20209.3 °C
Precipitation 1991–20201'123 mm
9.3 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
641 m
Mean elevation
581 m
Relief
128 m
Mean slope
5.5°
Flat share
48.6%
South-facing
17.1%
Above 2000 m
0.0%
Relief 128 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
12.7 GWh/yr
Roofs + façades
16.7 GWh/yr
≈ households powered
2'800
Per inhabitant
6'487 kWh/yr
13 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
25.18 Rp./kWh
Energy
10.5 Rp./kWh
Grid usage
11.18 Rp./kWh
Levies + grid surcharge
2.3 Rp./kWh
25.18 Rp./kWh10.5645.88
Canton median 26.88 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Elektra Genossenschaft Arni-Islisberg
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
2.21 %
Second homes
8.2 %
Avg. rooms
4.3
Dwellings
858
Built before 19465.6%
Built since 200140.3%
2.21 %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
296
Workplaces
124
Services share
67.2 %
Jobs by sector: Primary 17 (5.7%) · Secondary 80 (27.0%) · Tertiary 199 (67.2%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
7
Organic share
0 %
Farmland
145 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 municipalities1'953 #111 AG · #983 CHGrowing municipalities-1.7% #193 AG · #1951 CHShrinking municipalities-1.7% #4 AG · #158 CHJobs per resident0.15 #185 AG · #1984 CHFamilies & children20.6% #86 AG · #950 CHAge structure20.1% #86 AG · #1227 CHWomen share50% #57 AG · #947 CHForeign residents13.5% #169 AG · #1408 CHPopulation density580/km² #71 AG · #446 CHTax burden11'619 #12 AG · #234 CHTaxes83% #13 AGWarmest municipalities9.3 °C #178 AG · #1160 CHSunniest municipalities40.4% #44 AG · #1649 CHRainiest municipalities1'123 mm #41 AG · #967 CHVoter turnout62% #13 AG · #324 CHAgainst Switzerland7% #154 AG · #1380 CHAligned with Switzerland93% #13 AG · #104 CHSVP strongholds37.3% #138 AG · #819 CHSP strongholds10.8% #135 AG · #1436 CHCentre strongholds11.5% #103 AG · #1068 CHFDP strongholds14.9% #37 AG · #836 CHGLP strongholds11.2% #13 AG · #205 CHGreen strongholds9.3% #12 AG · #668 CHLargest by area3.4 km² #161 AG · #1812 CHHighest municipalities603 m #8 AG · #812 CHSecond homes8.2% #89 AG · #1597 CHOrganic farming0% #148 AG · #1843 CHBest-connected municipalities48 min #12 AG · #406 CHRemotest municipalities48 min #185 AG · #1699 CHHighest peaks641 m #82 AG · #1386 CHHighest-lying municipalities581 m #23 AG · #1083 CHGreatest vertical range128 m #166 AG · #1699 CHSteepest municipalities5.5° #133 AG · #1474 CHSolar potential13 GWh #142 AG · #1368 CHSolar potential per capita6'487 kWh #156 AG · #1758 CHCheapest electricity25.18 Rp./kWh #23 AG · #458 CHMost expensive electricity25.18 Rp./kWh #173 AG · #1648 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopo- What is the postal code of Arni?
- The postal code of Arni is 8905.
- What is the tax rate in Arni?
- The municipal tax multiplier of Arni is 83% (2026); canton AG levies 103%.
- How much tax do you pay in Arni?
- A single person without children pays about 11'619 CHF income tax in Arni on 100'000 CHF gross income (federal, cantonal, municipal), rank 12 of 196 in canton AG. Source: ESTV (2026).
- How many residents does Arni have?
- Arni has 1'953 residents (2025).
- How many foreign residents live in Arni?
- Arni has 263 foreign residents, a share of 13.47% (2025).
Map
OpenStreetMapArni compared with
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