Postcode area · Au (SG) · St. Gallen

9435 Heerbrugg (Au (SG)): key figures

9435 Heerbrugg (postcode area in Au (SG)) has 5,411 residents in 2025 across 2.0 km², or 2,761 people per km². By population, 9435 Heerbrugg ranks No. 1 of 2 postcode areas in Au (SG). Population: +21.7% between 2015 and 2025.

  • 5,411 residents
  • 2.0 km²
  • 2,761 people/km²

9435 Heerbrugg in numbers

Population
5,411
ranked 415 of 2,275
+21.7%between 2015 and 2025
2015–2025
Population density
2,761people/km²
ranked 105 of 2,275
Area
2.0km²
ranked 2,960 of 3,168
Share of foreign nationals
45.3%
ranked 62 of 2,040
Dwellings
2,675
ranked 441 of 3,164
Residential buildings
810
ranked 639 of 3,160
Dwellings in buildings built before 1946
7.7%
ranked 3,005 of 3,164

Key points

By population, 9435 Heerbrugg ranks No. 1 of 2 postcode areas in Au (SG).

Nationally, 9435 Heerbrugg ranks No. 415 of 2,275 postcode areas.

Population of 9435 Heerbrugg over time

4,2504,5004,7505,0005,2505,5002015202020232025
Population, 2015–2025

9435 Heerbrugg had 4,448 residents in 2015 and 5,411 in 2025.

YearPopulation
20154,448
20204,910
20235,363
20255,411

All indicators for 9435 Heerbrugg

Next to the value for 9435 Heerbrugg: all postcode areas of Au (SG), then of the whole country (totals for counts, weighted averages for rates).

9435 HeerbruggNational medianHover over or tap a bar to see what it shows.

Housing

Indicator9435 HeerbruggAu (SG)SwitzerlandPosition?Rank in the areaRank in the country
Dwellings (2026)2,675––ranked 1 of 2ranked 441 of 3,164
Residential buildings (2026)810––ranked 2 of 2ranked 639 of 3,160
Dwellings in buildings built before 1946 (2026)7.7%9.9%23.2%ranked 2 of 2ranked 3,005 of 3,164
Dwellings in buildings built since 2001 (2026)31.4%33.0%23.6%ranked 2 of 2ranked 697 of 3,164
Share of detached houses among residential buildings (2026)68.1%70.3%63.5%ranked 2 of 2ranked 1,753 of 3,160

Energy

Indicator9435 HeerbruggAu (SG)SwitzerlandPosition?Rank in the areaRank in the country
Oil or gas heating systems (2026)70.5%63.2%56.2%ranked 1 of 2ranked 514 of 3,160
Heat pumps as main heating (2026)27.6%33.8%16.2%ranked 2 of 2ranked 482 of 3,160
Wood heating systems (2026)1.4%1.8%13.5%ranked 2 of 2ranked 3,019 of 3,160
District heating (2026)0.0%0.0%5.6%ranked 1 of 2ranked 2,207 of 3,160

Society

Indicator9435 HeerbruggAu (SG)SwitzerlandPosition?Rank in the areaRank in the country
Share of foreign nationals (2025)45.3%40.2%29.8%ranked 1 of 2ranked 62 of 2,040

Where is 9435 Heerbrugg?

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Postcode areas near 9435 Heerbrugg

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Frequently asked questions

What is the population of 9435 Heerbrugg (Au (SG))?

9435 Heerbrugg has 5,411 residents in 2025. It covers 2.0 km², or 2,761 people per km².

Where is 9435 Heerbrugg?

9435 Heerbrugg (postcode area) is part of Au (SG), in St. Gallen.

What is the value of “Share of foreign nationals” in 9435 Heerbrugg?

Share of foreign nationals: 45.3% (2025), ranked 62 of 2,040 postcode areas in the country.

What is the value of “Dwellings” in 9435 Heerbrugg?

Dwellings: 2,675 (2026), ranked 441 of 3,164 postcode areas in the country.