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 many residents does Kaiseraugst have?

Kaiseraugst has 5'544 residents (2023).

Which canton is Kaiseraugst in?

Kaiseraugst is located in canton AG.

Switzerland · Canton AG

Kaiseraugst

4303

AG CANTON4303

Residents

5'544

Area

4.9 km²

Tax multiplier

50%

Postal codes

Demographics

BFS · 2023

Women

2'732 49.3%

Men

2'812 50.7%

Children & youth (0–19)

1'075 19.4%

Swiss citizens

4'021 69.0%

Foreign residents

1'803 31.0%

0–19 · 1'075 · 19.4%20–64 · 3'373 · 60.8%65+ · 1'096 · 19.8%

Foreign residents 31.0%0%61.6%

Source: BFS/OFS · retrieved 24.07.2026

Recent federal votes

BFS · sd-t-17-02

14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)● Switzerland: accepted · turnout 50.6%53.6% yes

14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»● Switzerland: rejected · turnout 51.3%46.9% yes

08.03.2026Bundesgesetz über die Individualbesteuerung● Switzerland: accepted · turnout 47.5%54.4% yes

08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»● Switzerland: rejected · turnout 47.2%22.5% yes

Source: BFS · retrieved 20.07.2026

Politics

National Council election 2023

SVP34.3% · strongest party

SVP34.3%

SP22.3%

Mitte12.0%

FDP11.3%

GLP8.2%

Source: BFS · retrieved 20.07.2026

Taxes 2026

ESTV

Municipal tax multiplier50%

Cantonal tax multiplier103%

50%CH range 25%525%

Tax rank 3 of 196 in canton Aargau

Source: ESTV · retrieved 20.07.2026

Climate

Basel / Binningen · 10.9 km

Annual mean temperature 202511.8 °C

Precipitation 2025930 mm

11.8 °CCH range -5.5°14°

Source: MeteoSwiss · retrieved 24.07.2026

Municipality

Wikidata · CC0

Websitekaiseraugst.ch ↗

Source: Wikidata · retrieved 20.07.2026

Postal codes (1)

swisstopo

4303

Kaiseraugst

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 many residents does Kaiseraugst have?: Kaiseraugst has 5'544 residents (2023).
Which canton is Kaiseraugst in?: Kaiseraugst is located in canton AG.

Map

OpenStreetMap