Demographics
BFS · 2025Women
3'375 51.2%
Men
3'222 48.8%
Children & youth (0–19)
1'189 18.0%
Swiss citizens
5'099 77.3%
Foreign residents
1'498 22.7%
Population density
447 pop./km²
0–19 · 1'189 · 18.0%20–64 · 3'658 · 55.4%65+ · 1'750 · 26.5%
Foreign residents 22.7%0%64.0%
Population change 2025: +23 (+0.4%) · 42 births · 91 deaths · net migration +60
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 District de Porrentruy: 27.3% Yes
30.4% YesNo 69.6%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict District de Porrentruy: 32.1% Yes
24.6% YesNo 75.4%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict District de Porrentruy: 43.8% Yes
39.4% YesNo 60.6%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict District de Porrentruy: 43.6% Yes
34.2% YesNo 65.8%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict District de Porrentruy: 51.9% Yes
59.7% YesNo 40.3%
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 District de Porrentruy: 29.3% Yes
37.3% YesNo 62.7%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict District de Porrentruy: 38.1% Yes
32.8% YesNo 67.2%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict District de Porrentruy: 54.7% Yes
47.7% YesNo 52.3%
08.03.2026Federal decree on Swiss currency and cash supply (counter-proposal to Cash Initiative)Federal● Accepted · 73.4% YesDistrict District de Porrentruy: 60.2% Yes
66.8% YesNo 33.2%
08.03.2026Popular Initiative 'Yes to an independent and free Swiss currency with coins or banknotes (Cash is freedom)'Federal● Rejected · 45.6% YesDistrict District de Porrentruy: 63.7% Yes
57.4% YesNo 42.6%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023Mitte31.8% · strongest party
Mitte31.8%
SP31.2%
SVP11.8%
FDP11.4%
GRÜNE10.4%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier205%
Cantonal tax multiplier285%
205%JU range 130%235%
Tax rank 15 of 51 in canton JuraTax burden
Single, 100'000 CHF gross income
15'970 CHF(16%)
Rank 13 of 51 in the canton · 1258 of 2110 in Switzerland
Median canton 16'261 CHF · median Switzerland 15'290 CHF
Cheapest Les Breuleux 13'786 CHF · most expensive Basse-Allaine 16'843 CHF
100'000 CHF:15'970 CHF(~16%)
PorrentruyCanton range JuraSwitzerland median
Show data table
| Gross income | Porrentruy | Jura | Switzerland median |
|---|---|---|---|
| 40'000 | 6.8% | 5.8–7.2% | 5.4% |
| 50'000 | 8.9% | 7.6–9.5% | 7.8% |
| 60'000 | 10.7% | 9.1–11.3% | 10.5% |
| 70'000 | 12.2% | 10.4–12.9% | 11.9% |
| 80'000 | 13.6% | 11.7–14.4% | 13.1% |
| 90'000 | 14.8% | 12.7–15.6% | 14.1% |
| 100'000 | 16% | 13.8–16.8% | 15.3% |
| 110'000 | 17% | 14.7–17.9% | 16.3% |
| 120'000 | 18% | 15.6–19% | 17.2% |
| 130'000 | 19% | 16.5–20% | 18.1% |
| 140'000 | 19.9% | 17.3–21% | 19% |
| 150'000 | 20.7% | 18.1–21.8% | 19.7% |
| 175'000 | 22.6% | 19.8–23.7% | 21.6% |
| 200'000 | 24.1% | 21.2–25.3% | 23.2% |
| 225'000 | 25.4% | 22.4–26.7% | 24.6% |
| 250'000 | 26.6% | 23.5–27.9% | 25.8% |
| 275'000 | 27.7% | 24.5–28.9% | 26.8% |
| 300'000 | 28.5% | 25.3–29.8% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–202010.1 °C
Precipitation 1991–20201'101 mm
10.1 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
580 m
Mean elevation
475 m
Relief
172 m
Mean slope
6.9°
Flat share
47.8%
South-facing
20.1%
Above 2000 m
0.0%
Relief 172 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
62.7 GWh/yr
Roofs + façades
84 GWh/yr
≈ households powered
13'900
Per inhabitant
9'504 kWh/yr
63 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
25.79 Rp./kWh
Energy
7.97 Rp./kWh
Grid usage
11.91 Rp./kWh
Levies + grid surcharge
4 Rp./kWh
25.79 Rp./kWh10.5645.88
Canton median 25.79 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator BKW Energie AG
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 · 2024Standard model, deductible 300678 CHF/mo
Ø premium in canton Jura462 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo
Premiums are set not per municipality but per canton and premium region. Shown is the average adult premium paid in canton Jura (2024, BAG) — it applies canton-wide, not to any single location.
2024 · Federal Office of Public Health (FOPH), retrieved 12.09.2026
Housing
BFS · AREVacancy rate
4.09 %
Second homes
18.3 %
Avg. rooms
3.6
Dwellings
4'255
Built before 194641.2%
Built since 200112.6%
4.09 %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
7'621
Workplaces
836
Services share
76 %
Jobs by sector: Primary 51 (0.7%) · Secondary 1'781 (23.4%) · Tertiary 5'789 (76.0%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
14
Organic share
35.7 %
Farmland
534 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 municipalities6'597 #3 JU · #311 CHGrowing municipalities0.4% #20 JU · #1210 CHShrinking municipalities0.4% #31 JU · #907 CHJobs per resident1.16 #3 JU · #67 CHFamilies & children18% #39 JU · #1676 CHAge structure26.5% #18 JU · #271 CHWomen share51.2% #13 JU · #333 CHForeign residents22.7% #2 JU · #670 CHPopulation density447/km² #2 JU · #559 CHTax burden15'970 #18 JU · #1263 CHTaxes205% #15 JUWarmest municipalities10.1 °C #6 JU · #466 CHSunniest municipalities41.3% #33 JU · #1295 CHRainiest municipalities1'101 mm #31 JU · #1103 CHVoter turnout46.2% #33 JU · #2001 CHAgainst Switzerland23.5% #16 JU · #326 CHAligned with Switzerland76.5% #8 JU · #1171 CHSVP strongholds11.8% #47 JU · #2077 CHSP strongholds31.2% #11 JU · #33 CHCentre strongholds31.8% #14 JU · #210 CHFDP strongholds11.4% #13 JU · #1225 CHGLP strongholds2.1% #24 JU · #1757 CHGreen strongholds10.4% #25 JU · #519 CHLargest by area14.8 km² #22 JU · #660 CHHighest municipalities423 m #45 JU · #1759 CHSecond homes18.3% #16 JU · #388 CHOrganic farming35.7% #5 JU · #242 CHBest-connected municipalities92 min #22 JU · #1602 CHRemotest municipalities92 min #30 JU · #520 CHHighest peaks580 m #45 JU · #1617 CHHighest-lying municipalities475 m #47 JU · #1562 CHGreatest vertical range172 m #43 JU · #1481 CHSteepest municipalities6.9° #37 JU · #1261 CHSolar potential63 GWh #3 JU · #219 CHSolar potential per capita9'504 kWh #45 JU · #1156 CHCheapest electricity25.79 Rp./kWh #28 JU · #808 CHMost expensive electricity25.79 Rp./kWh #40 JU · #1315 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopo- What is the postal code of Porrentruy?
- The postal code of Porrentruy is 2900.
- What is the tax rate in Porrentruy?
- The municipal tax multiplier of Porrentruy is 205% (2026); canton JU levies 285%.
- How much tax do you pay in Porrentruy?
- A single person without children pays about 15'970 CHF income tax in Porrentruy on 100'000 CHF gross income (federal, cantonal, municipal), rank 13 of 51 in canton JU. Source: ESTV (2026).
- How many residents does Porrentruy have?
- Porrentruy has 6'597 residents (2025).
- How many foreign residents live in Porrentruy?
- Porrentruy has 1'498 foreign residents, a share of 22.71% (2025).
Map
OpenStreetMapPorrentruy compared with
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