Demographics
BFS · 2025Women
1'609 51.1%
Men
1'538 48.9%
Children & youth (0–19)
477 15.2%
Swiss citizens
2'347 74.6%
Foreign residents
800 25.4%
Population density
281 pop./km²
0–19 · 477 · 15.2%20–64 · 1'729 · 54.9%65+ · 941 · 29.9%
Foreign residents 25.4%0%64.0%
Population change 2025: +21 (+0.7%) · 13 births · 38 deaths · net migration +57
STATPOP 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026 · swisstopo, retrieved 24.09.2026 · BEVNAT (Statistik der natürlichen Bevölkerungsbewegung) 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026
27.09.2026Popular Initiative 'For food security – through increased sustainable domestic production, more plant-based food and clean drinking water (Food Initiative)'Federal● Rejected · 27.5% YesDistrict Distretto di Lugano: 31.4% Yes
31.9% YesNo 68.1%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Distretto di Lugano: 48.8% Yes
52.9% YesNo 47.1%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Distretto di Lugano: 54.5% Yes
52.3% YesNo 47.7%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Distretto di Lugano: 49.7% Yes
55.5% YesNo 44.5%
14.06.2026Iniziativa popolare costituzionale elaborata "Si alla neutralizzazione dell'aumento dei valori di stima"Cantonal TI● Accepted · 74.0% YesDistrict Distretto di Lugano: 74.7% Yes
74.8% YesNo 25.2%
14.06.2026Iniziativa popolare legislativa generica "Per il rimborso delle cure dentarie"Cantonal TI● Rejected · 29.8% YesDistrict Distretto di Lugano: 29.4% Yes
33.5% YesNo 66.6%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Distretto di Lugano: 47.6% Yes
41.2% YesNo 58.8%
08.03.2026Popular Initiative ‘For a fair energy and climate policy: Investing for prosperity, jobs and the environment (Climate Fund Initiative)’Federal● Rejected · 29.3% YesDistrict Distretto di Lugano: 28.6% Yes
26.8% YesNo 73.2%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Distretto di Lugano: 47.2% Yes
54.5% YesNo 45.6%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Distretto di Lugano: 51.7% Yes
53.2% YesNo 46.8%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023SVP26.1% · strongest party
SVP26.1%
Mitte16.7%
FDP16.6%
GRÜNE10.6%
SP9.7%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier85%
Cantonal tax multiplier100%
85%TI range 56%100%
Tax rank 54 of 100 in canton TicinoTax burden
Single, 100'000 CHF gross income
14'007 CHF(14%)
Rank 47 of 100 in the canton · 833 of 2110 in Switzerland
Median canton 14'007 CHF · median Switzerland 15'290 CHF
Cheapest Porza 12'081 CHF · most expensive Bosco/Gurin 15'003 CHF
100'000 CHF:14'007 CHF(~14%)
TresaCanton range TicinoSwitzerland median
Show data table
| Gross income | Tresa | Ticino | Switzerland median |
|---|---|---|---|
| 40'000 | 4.6% | 3.9–4.9% | 5.4% |
| 50'000 | 6.8% | 5.8–7.3% | 7.8% |
| 60'000 | 8.7% | 7.5–9.4% | 10.5% |
| 70'000 | 10.3% | 8.8–11.1% | 11.9% |
| 80'000 | 11.7% | 10–12.6% | 13.1% |
| 90'000 | 12.8% | 11–13.8% | 14.1% |
| 100'000 | 14% | 12.1–15% | 15.3% |
| 110'000 | 15% | 13–16% | 16.3% |
| 120'000 | 15.9% | 13.8–17% | 17.2% |
| 130'000 | 16.8% | 14.6–17.9% | 18.1% |
| 140'000 | 17.6% | 15.4–18.8% | 19% |
| 150'000 | 18.4% | 16.1–19.7% | 19.7% |
| 175'000 | 20.2% | 17.7–21.5% | 21.6% |
| 200'000 | 21.7% | 19.1–23.1% | 23.2% |
| 225'000 | 23% | 20.3–24.4% | 24.6% |
| 250'000 | 24.1% | 21.3–25.5% | 25.8% |
| 275'000 | 25.1% | 22.2–26.6% | 26.8% |
| 300'000 | 26% | 23–27.5% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–202010.9 °C
Precipitation 1991–20201'832 mm
10.9 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
705 m
Mean elevation
398 m
Relief
466 m
Mean slope
16.4°
Flat share
19.3%
South-facing
44.3%
Above 2000 m
0.0%
Relief 466 m0 m3'847 m
Terrain figures cover the whole municipal territory (swisstopo swissALTIRegio) — not the settlement point. Slope and south-facing share are resolution-dependent and measured at 40 m.
swissALTIRegio 2026 · swisstopo, retrieved 28.08.2026
Roof potential
43.6 GWh/yr
Roofs + façades
59.9 GWh/yr
≈ households powered
9'700
Per inhabitant
13'861 kWh/yr
44 GWh/yr01'133 GWh/yr
BFE solar factsheet ↗Modelled roof and façade potential from the BFE solar model — the electricity these surfaces could produce, not installed capacity or what the municipality actually generates today. The household figure divides the roof potential by 4'500 kWh per year, ElCom’s reference household (consumption profile H4, a 5-room apartment).
Swiss Federal Office of Energy (SFOE), retrieved 24.09.2026
Electricity
ElCom · 2027Tariff H4
25.91 Rp./kWh
Energy
10.35 Rp./kWh
Grid usage
9.63 Rp./kWh
Levies + grid surcharge
4.52 Rp./kWh
25.91 Rp./kWh10.5645.88
Canton median 25.91 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Aziende Industriali di Lugano (AIL) SA
ElCom tariff comparison ↗How this is measured
Total household electricity price for ElCom consumption profile H4 — 4'500 kWh a year, a 5-room flat with electric stove and tumble dryer — standard product, excluding VAT, for the tariff year shown. Energy, grid usage, levies to public bodies and the federal grid surcharge are included. Canton and Swiss medians are ElCom's own published figures.
2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026
Health-insurance premiums
BAG · 2024Premium regionRegion 1
Standard model, deductible 300740 CHF/mo
Ø premium in canton Ticino498 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo
Premiums are set per canton and premium region. This area lies in premium region 1 of canton Ticino. Shown is the average adult premium paid across the whole canton Ticino (2024, BAG) — a region-specific average is not available in the cantonal data.
2024 · Federal Office of Public Health (FOPH), retrieved 12.09.2026
Housing
BFS · AREVacancy rate
4.82 %
Second homes
40.6 %
Avg. rooms
3.7
Dwellings
2'698
Built before 194639.2%
Built since 20018.2%
Second Homes Act: no new second-home permits (official building restriction in force).
4.82 %0 %12 %
Vacancy rate from the BFS vacant-dwelling count (2025); building age and room count from the Buildings and Dwellings Statistics (2024). The average room count treats the ‘6 rooms or more’ class as 6, so it is a slight lower bound. The vacancy rate is volatile for small municipalities.
Buildings and Dwellings Statistics 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026 · Dwelling inventory and second-home share 2026 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Economy
BFS · 2024Jobs
2'044
Workplaces
361
Services share
45.6 %
Jobs by sector: Primary 89 (4.4%) · Secondary 1'023 (50.0%) · Tertiary 932 (45.6%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
21
Organic share
28.6 %
Farmland
160 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026
Accessibility
ARE · NPVMNational Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Municipality
Wikidata · CC0Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities3'147 #26 TI · #694 CHGrowing municipalities0.7% #28 TI · #991 CHShrinking municipalities0.7% #73 TI · #1125 CHJobs per resident0.65 #26 TI · #275 CHFamilies & children15.2% #75 TI · #1969 CHAge structure29.9% #24 TI · #100 CHWomen share51.1% #42 TI · #359 CHForeign residents25.4% #43 TI · #530 CHPopulation density281/km² #50 TI · #815 CHTax burden14'007 #56 TI · #842 CHTaxes85% #54 TIWarmest municipalities10.9 °C #36 TI · #96 CHSunniest municipalities55.4% #38 TI · #60 CHRainiest municipalities1'832 mm #28 TI · #62 CHVoter turnout52.1% #77 TI · #1576 CHAgainst Switzerland30.4% #4 TI · #68 CHAligned with Switzerland69.6% #70 TI · #1404 CHSVP strongholds26.1% #4 TI · #1514 CHSP strongholds9.7% #77 TI · #1556 CHCentre strongholds16.7% #53 TI · #722 CHFDP strongholds16.6% #78 TI · #691 CHGLP strongholds1.7% #32 TI · #1809 CHGreen strongholds10.6% #27 TI · #486 CHLargest by area11.2 km² #42 TI · #885 CHHighest municipalities393 m #49 TI · #1923 CHSecond homes40.6% #35 TI · #205 CHOrganic farming28.6% #18 TI · #368 CHBest-connected municipalities50 min #55 TI · #478 CHRemotest municipalities50 min #47 TI · #1646 CHHighest peaks705 m #69 TI · #1192 CHHighest-lying municipalities398 m #69 TI · #1984 CHGreatest vertical range466 m #68 TI · #728 CHSteepest municipalities16.4° #64 TI · #522 CHSolar potential44 GWh #19 TI · #416 CHSolar potential per capita13'861 kWh #36 TI · #548 CHCheapest electricity25.91 Rp./kWh #47 TI · #860 CHMost expensive electricity25.91 Rp./kWh #85 TI · #1278 CH
Postal codes (6)
swisstopoLocalities
swisstopo · 6Nearby municipalities
swisstopo- What is the postal code of Tresa?
- Tresa has 6 postal codes: 6980, 6988, 6989, 6995, 6997, 6998.
- What is the tax rate in Tresa?
- The municipal tax multiplier of Tresa is 85% (2026); canton TI levies 100%.
- How much tax do you pay in Tresa?
- A single person without children pays about 14'007 CHF income tax in Tresa on 100'000 CHF gross income (federal, cantonal, municipal), rank 47 of 100 in canton TI. Source: ESTV (2026).
- How many residents does Tresa have?
- Tresa has 3'147 residents (2025).
- How many foreign residents live in Tresa?
- Tresa has 800 foreign residents, a share of 25.42% (2025).
Map
OpenStreetMapTresa compared with
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