Switzerland · Canton JU
Porrentruy
2900JU CANTON2900
Residents
6'597
Area
14.8 km²
Population density
447 pop./km²
Elevation
423 m a.s.l.
Tax multiplier
205%
Postal codes
1
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%
STATPOP 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026 · swisstopo, retrieved 24.08.2026
14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)Federal● Accepted · 52.5% Yes
39.4% YesNo 60.6%
14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected · 45.2% Yes
34.2% YesNo 65.8%
08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected · 29.3% Yes
37.3% YesNo 62.7%
08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected · 38.1% Yes
32.8% YesNo 67.2%
08.03.2026Bargeldinitiative und Gegenvorschlag: StichfrageFederal● Rejected · 37.4% Yes
47.7% YesNo 52.3%
08.03.2026Bundesbeschluss über die schweizerische Währung und die Bargeldversorgung (Gegenvorschlag zur Bargeldinitiative)Federal● Accepted · 73.4% Yes
66.8% YesNo 33.2%
08.03.2026Volksinitiative «Ja zu einer unabhängigen, freien Schweizer Währung mit Münzen oder Banknoten (Bargeld ist Freiheit)»Federal● Rejected · 45.6% Yes
57.4% YesNo 42.6%
30.11.2025Volksinitiative «Für eine soziale Klimapolitik – steuerlich gerecht finanziert (Initiative für eine Zukunft)»Federal● Rejected · 21.7% Yes
28.2% YesNo 71.8%
30.11.2025Volksinitiative «Für eine engagierte Schweiz (Service-citoyen-Initiative)»Federal● Rejected · 15.9% Yes
16.3% YesNo 83.7%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 31.08.2026
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 31.08.2026
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 31.08.2026
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
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 31.08.2026
Electricity
ElCom · 2026Tariff H4
27.9 Rp./kWh
Energy
10.89 Rp./kWh
Grid usage
11.25 Rp./kWh
Levies + grid surcharge
4 Rp./kWh
27.9 Rp./kWh9.6443.61
Canton median 27.9 Rp./kWhSwiss median 27.7 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.
2026 · Federal Electricity Commission (ElCom), retrieved 28.08.2026
Housing
BFSVacancy rate
4.09 %
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 31.08.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026
Accessibility
ARE · NPVMNational Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 28.08.2026
Municipality
Wikidata · CC0Websiteporrentruy.ch ↗
Wikidata · continuously updated, retrieved 31.08.2026
Rankings
31Largest municipalities6'597 #3 JU · #311 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 turnout44.4% #32 JU · #2024 CHAgainst Switzerland24% #16 JU · #321 CHAligned with Switzerland76% #8 JU · #1175 CHSVP strongholds11.8% #46 JU · #2072 CHSP strongholds31.2% #11 JU · #33 CHCentre strongholds31.8% #14 JU · #209 CHFDP strongholds11.4% #13 JU · #1223 CHGLP strongholds2.1% #23 JU · #1754 CHGreen strongholds10.4% #25 JU · #517 CHLargest by area14.8 km² #22 JU · #660 CHHighest municipalities423 m #45 JU · #1759 CHRemotest municipalities92 min #30 JU · #520 CHBest-connected municipalities92 min #22 JU · #1602 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 CHCheapest electricity27.9 Rp./kWh #30 JU · #1092 CHMost expensive electricity27.9 Rp./kWh #43 JU · #1037 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
- Porrentruy vs. Delémont
- Porrentruy vs. Haute-Sorne
- Porrentruy vs. Courrendlin
- Porrentruy vs. Courroux
- Porrentruy vs. Val Terbi
- Porrentruy vs. Courtételle
- Porrentruy vs. Saignelégier
- Porrentruy vs. Courgenay
- Porrentruy vs. Alle
- Porrentruy vs. Le Noirmont
- Porrentruy vs. Delémont
- Porrentruy vs. Haute-Sorne
- Porrentruy vs. Courrendlin
- Porrentruy vs. Courroux
- Porrentruy vs. Val Terbi
- Porrentruy vs. Courtételle
- Porrentruy vs. Saignelégier
- Porrentruy vs. Courgenay
- Porrentruy vs. Alle
- Porrentruy vs. Le Noirmont
- Porrentruy vs. Baden
- Porrentruy vs. Schwende-Rüte
- Porrentruy vs. Herisau
- Porrentruy vs. Bern
- Porrentruy vs. Allschwil
- Porrentruy vs. Basel
- Porrentruy vs. Fribourg
- Porrentruy vs. Geneva
- Porrentruy vs. Glarus Nord
- Porrentruy vs. Chur
- Porrentruy vs. Lucerne
- Porrentruy vs. Neuchâtel
- Porrentruy vs. Stans
- Porrentruy vs. Sarnen
- Porrentruy vs. St. Gallen
- Porrentruy vs. Schaffhausen
- Porrentruy vs. Olten
- Porrentruy vs. Freienbach
- Porrentruy vs. Frauenfeld
- Porrentruy vs. Lugano
- Porrentruy vs. Altdorf
- Porrentruy vs. Lausanne
- Porrentruy vs. Sion
- Porrentruy vs. Zug
- Porrentruy vs. Zurich