Postcode area · Chiasso · Ticino

6830 Chiasso (Chiasso): key figures

6830 Chiasso (postcode area in Chiasso) has 6,559 residents in 2025 across 1.9 km², or 3,364 people per km². By population, 6830 Chiasso ranks No. 1 of 2 postcode areas in Chiasso. Population: −6.4% between 2015 and 2025.

  • 6,559 residents
  • 1.9 km²
  • 3,364 people/km²

6830 Chiasso in numbers

Population
6,559
ranked 331 of 2,275
−6.4%between 2015 and 2025
2015–2025
Population density
3,364people/km²
ranked 80 of 2,275
Area
1.9km²
ranked 2,962 of 3,168
Share of foreign nationals
49.8%
ranked 19 of 2,040
Dwellings
5,228
ranked 212 of 3,164
Residential buildings
556
ranked 1,034 of 3,160
Dwellings in buildings built before 1946
17.2%
ranked 2,369 of 3,164

Key points

By population, 6830 Chiasso ranks No. 1 of 2 postcode areas in Chiasso.

Nationally, 6830 Chiasso ranks No. 331 of 2,275 postcode areas.

Population of 6830 Chiasso over time

6,4006,6006,8007,0007,2002015202020232025
Population, 2015–2025

6830 Chiasso had 7,010 residents in 2015 and 6,559 in 2025.

YearPopulation
20157,010
20206,469
20236,469
20256,559

All indicators for 6830 Chiasso

Next to the value for 6830 Chiasso: all postcode areas of Chiasso, then of the whole country (totals for counts, weighted averages for rates).

6830 ChiassoNational medianHover over or tap a bar to see what it shows.

Housing

Indicator6830 ChiassoChiassoSwitzerlandPosition?Rank in the areaRank in the country
Dwellings (2026)5,228––ranked 1 of 2ranked 212 of 3,164
Residential buildings (2026)556––ranked 1 of 2ranked 1,034 of 3,160
Dwellings in buildings built before 1946 (2026)17.2%18.4%23.2%ranked 2 of 2ranked 2,369 of 3,164
Dwellings in buildings built since 2001 (2026)9.9%10.4%23.6%ranked 2 of 2ranked 2,580 of 3,164
Share of detached houses among residential buildings (2026)22.3%37.3%63.5%ranked 2 of 2ranked 3,113 of 3,160

Energy

Indicator6830 ChiassoChiassoSwitzerlandPosition?Rank in the areaRank in the country
Oil or gas heating systems (2026)88.0%80.5%56.2%ranked 1 of 2ranked 32 of 3,160
Heat pumps as main heating (2026)5.7%10.1%16.2%ranked 2 of 2ranked 2,602 of 3,160
Wood heating systems (2026)1.5%2.8%13.5%ranked 2 of 2ranked 3,010 of 3,160
District heating (2026)1.5%1.2%5.6%ranked 1 of 2ranked 1,266 of 3,160

Society

Indicator6830 ChiassoChiassoSwitzerlandPosition?Rank in the areaRank in the country
Share of foreign nationals (2025)49.8%46.3%29.8%ranked 1 of 2ranked 19 of 2,040

Where is 6830 Chiasso?

Other postcode areas in Chiasso

Postcode areas near 6830 Chiasso

Next in alphabetical order: 6832 Pedrinate

The postcode areas of Chiasso

Back to the page for Chiasso

Frequently asked questions

What is the population of 6830 Chiasso (Chiasso)?

6830 Chiasso has 6,559 residents in 2025. It covers 1.9 km², or 3,364 people per km².

Where is 6830 Chiasso?

6830 Chiasso (postcode area) is part of Chiasso, in Ticino.

What is the value of “Share of foreign nationals” in 6830 Chiasso?

Share of foreign nationals: 49.8% (2025), ranked 19 of 2,040 postcode areas in the country.

What is the value of “Dwellings” in 6830 Chiasso?

Dwellings: 5,228 (2026), ranked 212 of 3,164 postcode areas in the country.