Postcode area · Rapperswil-Jona · St. Gallen

8645 Jona (Rapperswil-Jona): key figures

8645 Jona (postcode area in Rapperswil-Jona) has 18,647 residents in 2025 across 15.8 km², or 1,176 people per km². By population, 8645 Jona ranks No. 1 of 3 postcode areas in Rapperswil-Jona. Population: +7.8% between 2015 and 2025.

  • 18,647 residents
  • 15.8 km²
  • 1,176 people/km²

8645 Jona in numbers

Population
18,647
ranked 78 of 2,275
+7.8%between 2015 and 2025
2015–2025
Population density
1,176people/km²
ranked 311 of 2,275
Area
15.8km²
ranked 645 of 3,168
Share of foreign nationals
18.3%
ranked 1,243 of 2,040
Dwellings
8,975
ranked 103 of 3,164
Residential buildings
2,636
ranked 43 of 3,160
Dwellings in buildings built before 1946
6.7%
ranked 3,044 of 3,164

Key points

By population, 8645 Jona ranks No. 1 of 3 postcode areas in Rapperswil-Jona.

Nationally, 8645 Jona ranks No. 78 of 2,275 postcode areas.

Population of 8645 Jona over time

17,00017,50018,00018,50019,0002015202020232025
Population, 2015–2025

8645 Jona had 17,299 residents in 2015 and 18,647 in 2025.

YearPopulation
201517,299
202017,524
202318,413
202518,647

All indicators for 8645 Jona

Next to the value for 8645 Jona: all postcode areas of Rapperswil-Jona, then of the whole country (totals for counts, weighted averages for rates).

8645 JonaNational medianHover over or tap a bar to see what it shows.

Housing

Indicator8645 JonaRapperswil-JonaSwitzerlandPosition?Rank in the areaRank in the country
Dwellings (2026)8,975––ranked 1 of 4ranked 103 of 3,164
Residential buildings (2026)2,636––ranked 1 of 4ranked 43 of 3,160
Dwellings in buildings built before 1946 (2026)6.7%13.5%23.2%ranked 4 of 4ranked 3,044 of 3,164
Dwellings in buildings built since 2001 (2026)25.3%23.2%23.6%ranked 2 of 4ranked 1,218 of 3,164
Share of detached houses among residential buildings (2026)62.3%55.1%63.5%ranked 2 of 4ranked 2,222 of 3,160

Energy

Indicator8645 JonaRapperswil-JonaSwitzerlandPosition?Rank in the areaRank in the country
Oil or gas heating systems (2026)54.1%54.4%56.2%ranked 2 of 4ranked 1,318 of 3,160
Heat pumps as main heating (2026)39.3%39.4%16.2%ranked 2 of 4ranked 145 of 3,160
Wood heating systems (2026)2.2%2.2%13.5%ranked 3 of 4ranked 2,920 of 3,160
District heating (2026)2.2%1.7%5.6%ranked 1 of 4ranked 1,061 of 3,160

Society

Indicator8645 JonaRapperswil-JonaSwitzerlandPosition?Rank in the areaRank in the country
Share of foreign nationals (2025)18.3%21.1%29.8%ranked 2 of 3ranked 1,243 of 2,040

Where is 8645 Jona?

Other postcode areas in Rapperswil-Jona

Postcode areas near 8645 Jona

Previous in alphabetical order: 8640 Rapperswil SG

Next in alphabetical order: 8646 Wagen

The postcode areas of Rapperswil-Jona

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Frequently asked questions

What is the population of 8645 Jona (Rapperswil-Jona)?

8645 Jona has 18,647 residents in 2025. It covers 15.8 km², or 1,176 people per km².

Where is 8645 Jona?

8645 Jona (postcode area) is part of Rapperswil-Jona, in St. Gallen.

What is the value of “Share of foreign nationals” in 8645 Jona?

Share of foreign nationals: 18.3% (2025), ranked 1,243 of 2,040 postcode areas in the country.

What is the value of “Dwellings” in 8645 Jona?

Dwellings: 8,975 (2026), ranked 103 of 3,164 postcode areas in the country.