What is the postal code of Kaiseraugst?

The postal code of Kaiseraugst is 4303.

What is the tax rate in Kaiseraugst?

The municipal tax multiplier of Kaiseraugst is 50% (2026); canton AG levies 103%.

How much tax do you pay in Kaiseraugst?

A single person without children pays about 9'859 CHF income tax in Kaiseraugst on 100'000 CHF gross income (federal, cantonal, municipal), rank 2 of 196 in canton AG. Source: ESTV (2026).

How many residents does Kaiseraugst have?

Kaiseraugst has 5'985 residents (2025).

How many foreign residents live in Kaiseraugst?

Kaiseraugst has 1'886 foreign residents, a share of 31.51% (2025).

Switzerland · Canton AG

Kaiseraugst

4303

AG CANTON4303

Residents

5'985

Area

4.9 km²

Population density

1'221 pop./km²

Elevation

295 m a.s.l.

Tax multiplier

50%

Postal codes

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

Demographics

BFS · 2025

Women

2'930 49.0%

Men

3'055 51.0%

Children & youth (0–19)

1'127 18.8%

Swiss citizens

4'099 68.5%

Foreign residents

1'886 31.5%

Population density

1'221 pop./km²

0–19 · 1'127 · 18.8%20–64 · 3'679 · 61.5%65+ · 1'179 · 19.7%

Foreign residents 31.5%0%64.0%

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

Vote results for Kaiseraugst

BFS

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

53.6% YesNo 46.4%

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

46.9% YesNo 53.1%

14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% Yes

50.5% YesNo 49.5%

14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% Yes

45.8% YesNo 54.2%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

54.4% YesNo 45.6%

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

22.5% YesNo 77.5%

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

45.4% YesNo 54.6%

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

41.7% YesNo 58.3%

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

70.1% YesNo 29.9%

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

48.1% YesNo 51.9%

All federal votes →

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

Politics

National Council election 2023

SVP34.3% · strongest party

SVP34.3%

SP22.3%

Mitte12.0%

FDP11.3%

GLP8.2%

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

Taxes 2026

ESTV

Municipal tax multiplier50%

Cantonal tax multiplier103%

50%AG range 48%127%

Tax rank 2 of 196 in canton Aargau

Tax burden

Single, 100'000 CHF gross income

9'859 CHF(9.9%)

Rank 2 of 196 in the canton · 56 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

Income tax as % of gross income

100'000 CHF:9'859 CHF(~9.9%)

KaiseraugstCanton range AargauSwitzerland median

Show data table

Gross income	Kaiseraugst	Aargau	Switzerland median
40'000	3.9%	3.8–5.6%	5.4%
50'000	5.2%	5.2–7.7%	7.8%
60'000	6.4%	6.4–9.3%	10.5%
70'000	7.5%	7.4–10.7%	11.9%
80'000	8.3%	8.2–11.9%	13.1%
90'000	9%	8.9–12.8%	14.1%
100'000	9.9%	9.8–14%	15.3%
110'000	10.6%	10.5–14.9%	16.3%
120'000	11.3%	11.2–15.8%	17.2%
130'000	11.9%	11.7–16.5%	18.1%
140'000	12.5%	12.4–17.3%	19%
150'000	13.1%	13–18%	19.7%
175'000	14.5%	14.4–19.7%	21.6%
200'000	15.7%	15.5–21.1%	23.2%
225'000	16.8%	16.6–22.4%	24.6%
250'000	17.8%	17.6–23.6%	25.8%
275'000	18.6%	18.4–24.5%	26.8%
300'000	19.3%	19.1–25.3%	27.4%

2026 · Federal Tax Administration (FTA), retrieved 31.08.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–202011.1 °C

Precipitation 1991–2020898 mm

11.1 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

383 m

Mean elevation

308 m

Relief

122 m

Mean slope

5.3°

Flat share

60.3%

South-facing

8.0%

Above 2000 m

0.0%

Relief 122 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

44.3 GWh/yr

Roofs + façades

54.5 GWh/yr

≈ households powered

9'800

44 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 H4

27.89 Rp./kWh

Energy

11.4 Rp./kWh

Grid usage

12.23 Rp./kWh

Levies + grid surcharge

3.06 Rp./kWh

27.89 Rp./kWh9.6443.61

Canton median 27.73 Rp./kWhSwiss median 27.7 Rp./kWh

Network operator AEW Energie 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.

2026 · Federal Electricity Commission (ElCom), retrieved 28.08.2026

Housing

BFS

Vacancy rate

0.93 %

Avg. rooms

3.6

Dwellings

2'798

Built before 19465.6%

Built since 200131.4%

0.93 %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 30 min · Car 19 min

AgglomerationPT 29 min · Car 19 min

Remoteness 196/196 in canton

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

Municipality

Wikidata · CC0

Websitekaiseraugst.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities5'985 #34 AG · #345 CH Families & children18.8% #154 AG · #1506 CH Age structure19.7% #99 AG · #1309 CH Women share49% #130 AG · #1528 CH Foreign residents31.5% #33 AG · #250 CH Population density1'221/km² #20 AG · #165 CH Tax burden9'859 #3 AG · #57 CH Taxes50% #2 AG Warmest municipalities11.1 °C #1 AG · #51 CH Sunniest municipalities42.1% #1 AG · #1115 CH Rainiest municipalities898 mm #196 AG · #1952 CH Voter turnout46.6% #183 AG · #1958 CH Against Switzerland6% #160 AG · #1421 CH Aligned with Switzerland94% #11 AG · #71 CH SVP strongholds34.3% #161 AG · #1019 CH SP strongholds22.3% #11 AG · #307 CH Centre strongholds12% #99 AG · #1036 CH FDP strongholds11.3% #105 AG · #1236 CH GLP strongholds8.2% #70 AG · #553 CH Green strongholds5.5% #106 AG · #1443 CH Largest by area4.9 km² #127 AG · #1564 CH Highest municipalities295 m #191 AG · #2062 CH Remotest municipalities30 min #196 AG · #2032 CH Best-connected municipalities30 min #1 AG · #80 CH Highest peaks383 m #194 AG · #2097 CH Highest-lying municipalities308 m #194 AG · #2096 CH Greatest vertical range122 m #169 AG · #1724 CH Steepest municipalities5.3° #141 AG · #1518 CH Solar potential44 GWh #29 AG · #402 CH Cheapest electricity27.89 Rp./kWh #134 AG · #1044 CH Most expensive electricity27.89 Rp./kWh #81 AG · #1082 CH

Postal codes (1)

swisstopo

4303

Kaiseraugst

Localities

swisstopo · 1

Kaiseraugst4303

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Kaiseraugst?: The postal code of Kaiseraugst is 4303.
What is the tax rate in Kaiseraugst?: The municipal tax multiplier of Kaiseraugst is 50% (2026); canton AG levies 103%.
How much tax do you pay in Kaiseraugst?: A single person without children pays about 9'859 CHF income tax in Kaiseraugst on 100'000 CHF gross income (federal, cantonal, municipal), rank 2 of 196 in canton AG. Source: ESTV (2026).
How many residents does Kaiseraugst have?: Kaiseraugst has 5'985 residents (2025).
How many foreign residents live in Kaiseraugst?: Kaiseraugst has 1'886 foreign residents, a share of 31.51% (2025).

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