Postcode area · Kaiseraugst · Aargau

4303 Kaiseraugst (Kaiseraugst): key figures

4303 Kaiseraugst (postcode area in Kaiseraugst) has 5,931 residents in 2025 across 5.1 km², or 1,158 people per km². Population: +8.1% between 2015 and 2025.

  • 5,931 residents
  • 5.1 km²
  • 1,158 people/km²

4303 Kaiseraugst in numbers

Population
5,931
ranked 370 of 2,275
+8.1%between 2015 and 2025
2015–2025
Population density
1,158people/km²
ranked 319 of 2,275
Area
5.1km²
ranked 2,137 of 3,168
Share of foreign nationals
32.0%
ranked 368 of 2,040
Dwellings
2,831
ranked 410 of 3,164
Residential buildings
737
ranked 738 of 3,160
Dwellings in buildings built before 1946
5.5%
ranked 3,086 of 3,164

Key points

Nationally, 4303 Kaiseraugst ranks No. 370 of 2,275 postcode areas.

Population of 4303 Kaiseraugst over time

5,4005,6005,8006,0002015202020232025
Population, 2015–2025

4303 Kaiseraugst had 5,489 residents in 2015 and 5,931 in 2025.

YearPopulation
20155,489
20205,505
20235,490
20255,931

All indicators for 4303 Kaiseraugst

Next to the value for 4303 Kaiseraugst: all postcode areas of Kaiseraugst, then of the whole country (totals for counts, weighted averages for rates).

4303 KaiseraugstNational medianHover over or tap a bar to see what it shows.

Housing

Indicator4303 KaiseraugstKaiseraugstSwitzerlandPosition?Rank in the areaRank in the country
Dwellings (2026)2,831––ranked 410 of 3,164
Residential buildings (2026)737––ranked 738 of 3,160
Dwellings in buildings built before 1946 (2026)5.5%5.5%23.2%ranked 3,086 of 3,164
Dwellings in buildings built since 2001 (2026)32.1%32.1%23.6%ranked 641 of 3,164
Share of detached houses among residential buildings (2026)68.9%68.9%63.5%ranked 1,691 of 3,160

Energy

Indicator4303 KaiseraugstKaiseraugstSwitzerlandPosition?Rank in the areaRank in the country
Oil or gas heating systems (2026)53.5%53.5%56.2%ranked 1,340 of 3,160
Heat pumps as main heating (2026)7.5%7.5%16.2%ranked 2,332 of 3,160
Wood heating systems (2026)2.0%2.0%13.5%ranked 2,947 of 3,160
District heating (2026)34.5%34.5%5.6%ranked 53 of 3,160

Society

Indicator4303 KaiseraugstKaiseraugstSwitzerlandPosition?Rank in the areaRank in the country
Share of foreign nationals (2025)32.0%32.0%29.8%ranked 368 of 2,040

Where is 4303 Kaiseraugst?

Frequently asked questions

What is the population of 4303 Kaiseraugst (Kaiseraugst)?

4303 Kaiseraugst has 5,931 residents in 2025. It covers 5.1 km², or 1,158 people per km².

Where is 4303 Kaiseraugst?

4303 Kaiseraugst (postcode area) is part of Kaiseraugst, in Aargau.

What is the value of “Share of foreign nationals” in 4303 Kaiseraugst?

Share of foreign nationals: 32.0% (2025), ranked 368 of 2,040 postcode areas in the country.

What is the value of “Dwellings” in 4303 Kaiseraugst?

Dwellings: 2,831 (2026), ranked 410 of 3,164 postcode areas in the country.