Switzerland · Canton AG
Arni
8905AG CANTON8905
Residents
1'898
Area
3.4 km²
Elevation
603 m a.s.l.
Tax multiplier
83%
Postal codes
1
Demographics
BFS · 2023Women
940 49.5%
Men
958 50.5%
Children & youth (0–19)
409 21.5%
Swiss citizens
1'677 84.4%
Foreign residents
310 15.6%
0–19 · 409 · 21.5%20–64 · 1'129 · 59.5%65+ · 360 · 19.0%
Foreign residents 15.6%0%61.6%
STATPOP 2023 · Bundesamt für Statistik (BFS), retrieved 24.07.2026
Votes
BFS14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)Federal● Accepted
59.7% YesNo 40.3%
14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected
49.3% YesNo 50.7%
14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected
43.5% YesNo 56.5%
14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted
48.9% YesNo 51.1%
08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected
18.3% YesNo 81.7%
08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected
37.7% YesNo 62.3%
08.03.2026Bundesbeschluss über die schweizerische Währung und die Bargeldversorgung (Gegenvorschlag zur Bargeldinitiative)Federal● Accepted
75.4% YesNo 24.6%
08.03.2026Volksinitiative «Ja zu einer unabhängigen, freien Schweizer Währung mit Münzen oder Banknoten (Bargeld ist Freiheit)»Federal● Rejected
40.8% YesNo 59.2%
Volksabstimmungen (sd-t-17-02) 2026 · Bundesamt für Statistik (BFS), retrieved 03.08.2026
Politics
National Council election 2023SVP37.3% · strongest party
SVP37.3%
FDP14.9%
Mitte11.5%
GLP11.2%
SP10.8%
sd-t-17.02-NRW2023 2023 · Bundesamt für Statistik (BFS), retrieved 20.07.2026
Taxes 2026
ESTVMunicipal tax multiplier83%
Cantonal tax multiplier103%
83%AG range 48%127%
Tax rank 12 of 196 in canton Aargau2026 · Eidgenössische Steuerverwaltung (ESTV), retrieved 20.07.2026
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 03.08.2026
Terrain
swisstopo · DHM 40 mHighest point
646 m
Mean elevation
598 m
Relief
84 m
Mean slope
5.3°
Flat share
55.1%
South-facing
11.4%
Above 2000 m
0.0%
Relief 84 m0 m3'865 m
Terrain figures cover the whole municipal territory (swisstopo DEM, 40 m) — not the settlement point. Slope and south-facing share are resolution-dependent and measured at 40 m.
swissALTIRegio 2025 · swisstopo, retrieved 04.08.2026
Solar potential
BFERoof potential
12.7 GWh/yr
Roofs + façades
16.7 GWh/yr
≈ households powered
2'800
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).
Bundesamt für Energie (BFE), retrieved 10.08.2026
Housing
BFSVacancy rate
2.21 %
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.
Gebäude- und Wohnungsstatistik (GWS) 2024 · Bundesamt für Statistik (BFS), retrieved 11.08.2026 · Leerwohnungszählung (LWZ) 2025 · Bundesamt für Statistik (BFS), retrieved 11.08.2026
Municipality
Wikidata · CC0Websitearni-ag.ch ↗
Wikidata · continuously updated, retrieved 27.07.2026
Rankings
24Largest municipalities1'898 #111 AG · #992 CHFamilies & children21.5% #62 AG · #749 CHAge structure19% #96 AG · #1311 CHWomen share49.5% #99 AG · #1309 CHForeign residents15.6% #153 AG · #1220 CHPopulation density563/km² #72 AG · #454 CHTaxes83% #12 AGWarmest municipalities9.3 °C #179 AG · #1171 CHSunniest municipalities40.4% #44 AG · #1667 CHRainiest municipalities1'123 mm #41 AG · #978 CHVoter turnout62% #13 AG · #324 CHSVP strongholds37.3% #138 AG · #823 CHSP strongholds10.8% #136 AG · #1451 CHCentre strongholds11.5% #103 AG · #1081 CHFDP strongholds14.9% #38 AG · #848 CHGLP strongholds11.2% #13 AG · #205 CHGreen strongholds9.3% #12 AG · #680 CHLargest by area3.4 km² #162 AG · #1822 CHHighest municipalities603 m #8 AG · #825 CHSolar potential13 GWh #142 AG · #1367 CHHighest peaks646 m #70 AG · #1371 CHHighest-lying municipalities598 m #17 AG · #1039 CHGreatest vertical range84 m #183 AG · #1913 CHSteepest municipalities5.3° #136 AG · #1502 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopoFrequently asked questions
- 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 many residents does Arni have?
- Arni has 1'898 residents (2023).
- How many foreign residents live in Arni?
- Arni has 310 foreign residents, a share of 15.6% (2024).
- Which party is strongest in Arni?
- In the 2023 National Council election, SVP was the strongest party in Arni with 37.282% of the vote.