Chiasso: population and statistics
Chiasso has a population of 7,677 (2025) across 5.3 km², or 1,435 people per km². It ranks 256 of 2,115 municipalities by population. Its population is falling: −6.1% between 2015 and 2025.
- 7,677 residents
- 5.3 km²
- 1,435 people/km²
- 239 m
Key points
Among the 100 municipalities in Ticino, Chiasso ranks No. 5 by population.
Entities in the commercial register per 1,000 inhabitants: 336.1 in Chiasso, compared with an average of 117.1 in Ticino and 83.6 nationally.
Share of foreign nationals: 46.3% in Chiasso, compared with an average of 29.8% in Ticino and 27.7% nationally.
A 1 kWp solar panel tilted at 40° generates about 1,361 kWh a year here.
Chiasso in numbers
Where is Chiasso?
Population of Chiasso over time
Chiasso had 8,174 residents in 2015 and 7,677 in 2025.
| Year | Population |
|---|---|
| 2020 | 7,581 |
| 2021 | 7,440 |
| 2022 | 7,420 |
| 2023 | 7,565 |
| 2024 | 7,564 |
| 2025 | 7,677 |
Did you know?
- “Entities in the commercial register per 1,000 inhabitants”: higher than in 99% of municipalities.
- “Share of foreign nationals”: higher than in 99% of municipalities.
- “Jobs per 1,000 inhabitants”: higher than in 99% of municipalities.
- Its area is roughly equal to 749 football pitches.
- Its population density is 6.2 times the national average.
- The nearest municipality is Vacallo, 1.6 km away.
- The nearest more populous municipality is Mendrisio (15,076 residents), 5.1 km away.
All indicators for Chiasso
Value for the municipality, then the regional average and the national median (for counts: regional and national totals). The gauge places the municipality between the lowest and highest value in the country.
Population
| Indicator | Chiasso | Ticino | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 27.0% | 24.3% | 20.7% | ranked 140 of 1,811 |
Housing
| Indicator | Chiasso | Ticino | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 5,671 | 260,627 | 4,927,050 | ranked 162 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 18.4% | 20.3% | 23.3% | ranked 1,159 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 10.4% | 20.4% | 25.3% | ranked 1,669 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 37.3% | 62.1% | 69.5% | ranked 1,756 of 1,806 |
Energy
| Indicator | Chiasso | Ticino | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 81.0% | 59.8% | 53.5% | ranked 76 of 1,806 | |
| Heat pumps as main heating (2026) | 9.8% | 12.4% | 13.7% | ranked 1,252 of 1,806 | |
| Wood heating systems (2026) | 2.7% | 11.5% | 12.4% | ranked 1,640 of 1,806 | |
| District heating (2026) | 1.2% | 1.2% | 1.4% | ranked 939 of 1,806 | |
| Photovoltaic installations (2026) | 138 | 16,017 | 329,600 | ranked 800 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 422.6 kW | 915.9 kW | 1,134 kW | ranked 1,720 of 1,806 | |
| Rooftop solar electricity potential (2026) | 53.4 GWh/year | 3,370 GWh/year | 64,783 GWh/year | ranked 293 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 6,960 kWh/inh. | 9,438 kWh/inh. | 9,356 kWh/inh. | ranked 1,388 of 1,810 |
Economy
| Indicator | Chiasso | Ticino | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 1,943 | 40,256 | 728,011 | ranked 43 of 2,112 | |
| Entities listed in the commercial register (2026) | 2,580 | 42,118 | 762,757 | ranked 29 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 336.1 | 117.1 | 64.9 | ranked 4 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 83.4% | 72.1% | 65.7% | ranked 26 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 12.7% | 23.0% | 29.0% | ranked 1,778 of 1,808 |
Employment
| Indicator | Chiasso | Ticino | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 10,943 | 249,351 | 5,679,518 | ranked 84 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 1,425 | 698.3 | 362.9 | ranked 28 of 1,810 | |
| Share of jobs in services (2024) | 88.7% | 78.3% | 63.6% | ranked 99 of 1,804 | |
| Share of jobs in industry and construction (2024) | 11.1% | 20.2% | 24.2% | ranked 1,512 of 1,776 |
Society
| Indicator | Chiasso | Ticino | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 46.3% | 29.8% | 18.9% | ranked 22 of 1,811 |
Sunshine and temperatures: Chiasso
Frequently asked questions
What is the population of Chiasso?
Chiasso has 7,677 residents (2025), ranking 256 of 2,115 municipalities.
How big is Chiasso?
Chiasso covers 5.3 km², with a density of 1,435 people per km².
Is the population of Chiasso growing?
Between 2015 and 2025, the population of Chiasso went from 8,174 to 7,677, a change of −6.1%.
Where is Chiasso?
Chiasso is in Ticino. It belongs to Distretto di Mendrisio (district). Latitude 45.835, longitude 9.032.
Entities in the commercial register per 1,000 inhabitants: what is the figure for Chiasso?
In Chiasso, “Entities in the commercial register per 1,000 inhabitants” stands at 336.1 (2026), ranking 4 of 1,811 municipalities; the national median is 64.9.
Share of foreign nationals: what is the figure for Chiasso?
In Chiasso, “Share of foreign nationals” stands at 46.3% (2025), ranking 22 of 1,811 municipalities; the national median is 18.9%.
How much electricity does a solar panel produce in Chiasso?
In Chiasso, a 1 kWp south-facing system tilted at 40° produces about 1,361 kWh a year.
Which municipalities border Chiasso?
The nearest to Chiasso are Vacallo (1.6 km), Morbio Inferiore (2.0 km), Balerna (3.0 km), Breggia (3.1 km), Coldrerio (4.1 km).