Demographics
BFS · 2025Women
378 53.1%
Men
334 46.9%
Children & youth (0–19)
140 19.7%
Swiss citizens
647 90.9%
Foreign residents
65 9.1%
Population density
57 pop./km²
0–19 · 140 · 19.7%20–64 · 404 · 56.7%65+ · 168 · 23.6%
Foreign residents 9.1%0%64.0%
Population change 2025: −8 (−1.1%) · 4 births · 3 deaths · net migration −9
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 des Franches-Montagnes: 29.3% Yes
36.0% YesNo 64.0%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict District des Franches-Montagnes: 23.4% Yes
23.4% YesNo 76.6%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict District des Franches-Montagnes: 34.2% Yes
26.2% YesNo 73.8%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict District des Franches-Montagnes: 33.7% Yes
30.3% YesNo 69.8%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict District des Franches-Montagnes: 56.5% Yes
54.9% YesNo 45.1%
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 des Franches-Montagnes: 37.5% Yes
50.9% YesNo 49.1%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict District des Franches-Montagnes: 30.8% Yes
22.8% YesNo 77.2%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict District des Franches-Montagnes: 49.8% Yes
48.7% YesNo 51.3%
08.03.2026Federal decree on Swiss currency and cash supply (counter-proposal to Cash Initiative)Federal● Accepted · 73.4% YesDistrict District des Franches-Montagnes: 65.4% Yes
67.2% YesNo 32.8%
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 des Franches-Montagnes: 58.2% Yes
57.0% YesNo 43.0%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023SP34.5% · strongest party
SP34.5%
GRÜNE22.0%
Mitte19.2%
SVP12.7%
FDP6.9%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier220%
Cantonal tax multiplier285%
220%JU range 130%235%
Tax rank 29 of 51 in canton JuraTax burden
Single, 100'000 CHF gross income
16'407 CHF(16.4%)
Rank 29 of 51 in the canton · 1510 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:16'407 CHF(~16.4%)
LajouxCanton range JuraSwitzerland median
Show data table
| Gross income | Lajoux | Jura | Switzerland median |
|---|---|---|---|
| 40'000 | 7% | 5.8–7.2% | 5.4% |
| 50'000 | 9.2% | 7.6–9.5% | 7.8% |
| 60'000 | 11% | 9.1–11.3% | 10.5% |
| 70'000 | 12.5% | 10.4–12.9% | 11.9% |
| 80'000 | 14% | 11.7–14.4% | 13.1% |
| 90'000 | 15.2% | 12.7–15.6% | 14.1% |
| 100'000 | 16.4% | 13.8–16.8% | 15.3% |
| 110'000 | 17.5% | 14.7–17.9% | 16.3% |
| 120'000 | 18.5% | 15.6–19% | 17.2% |
| 130'000 | 19.5% | 16.5–20% | 18.1% |
| 140'000 | 20.4% | 17.3–21% | 19% |
| 150'000 | 21.3% | 18.1–21.8% | 19.7% |
| 175'000 | 23.2% | 19.8–23.7% | 21.6% |
| 200'000 | 24.7% | 21.2–25.3% | 23.2% |
| 225'000 | 26.1% | 22.4–26.7% | 24.6% |
| 250'000 | 27.3% | 23.5–27.9% | 25.8% |
| 275'000 | 28.3% | 24.5–28.9% | 26.8% |
| 300'000 | 29.2% | 25.3–29.8% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–20207.3 °C
Precipitation 1991–20201'442 mm
7.3 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
1'061 m
Mean elevation
979 m
Relief
239 m
Mean slope
8.4°
Flat share
36.9%
South-facing
14.4%
Above 2000 m
0.0%
Relief 239 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
12.6 GWh/yr
Roofs + façades
16.1 GWh/yr
≈ households powered
2'800
Per inhabitant
17'697 kWh/yr
13 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
25.99 Rp./kWh
Energy
7.97 Rp./kWh
Grid usage
11.91 Rp./kWh
Levies + grid surcharge
4.2 Rp./kWh
25.99 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
1.31 %
Second homes
12.7 %
Avg. rooms
4.3
Dwellings
381
Built before 194635.4%
Built since 200119.4%
1.31 %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
198
Workplaces
48
Services share
45.5 %
Jobs by sector: Primary 39 (19.7%) · Secondary 69 (34.8%) · Tertiary 90 (45.5%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
17
Organic share
29.4 %
Farmland
543 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 municipalities712 #27 JU · #1644 CHGrowing municipalities-1.1% #39 JU · #1843 CHShrinking municipalities-1.1% #12 JU · #270 CHJobs per resident0.28 #39 JU · #1407 CHFamilies & children19.7% #32 JU · #1257 CHAge structure23.6% #25 JU · #571 CHWomen share53.1% #4 JU · #37 CHForeign residents9.1% #22 JU · #1781 CHPopulation density57/km² #25 JU · #1744 CHTax burden16'407 #31 JU · #1512 CHTaxes220% #29 JUWarmest municipalities7.3 °C #45 JU · #1823 CHSunniest municipalities41.6% #17 JU · #1201 CHRainiest municipalities1'442 mm #6 JU · #300 CHVoter turnout50.6% #13 JU · #1739 CHSVP strongholds12.7% #43 JU · #2055 CHSP strongholds34.5% #6 JU · #15 CHCentre strongholds19.2% #44 JU · #578 CHFDP strongholds6.9% #30 JU · #1727 CHGLP strongholds2.6% #18 JU · #1672 CHGreen strongholds22% #2 JU · #13 CHLargest by area12.4 km² #30 JU · #784 CHHighest municipalities960 m #9 JU · #288 CHSecond homes12.7% #38 JU · #813 CHOrganic farming29.4% #12 JU · #349 CHBest-connected municipalities97 min #26 JU · #1671 CHRemotest municipalities97 min #25 JU · #444 CHHighest peaks1'061 m #15 JU · #692 CHHighest-lying municipalities979 m #5 JU · #434 CHGreatest vertical range239 m #35 JU · #1187 CHSteepest municipalities8.4° #34 JU · #1079 CHSolar potential13 GWh #26 JU · #1374 CHSolar potential per capita17'697 kWh #25 JU · #271 CHCheapest electricity25.99 Rp./kWh #39 JU · #883 CHMost expensive electricity25.99 Rp./kWh #15 JU · #1227 CH
Postal codes (2)
swisstopoLocalities
swisstopo · 3Nearby municipalities
swisstopo- What is the postal code of Lajoux?
- Lajoux has 2 postal codes: 2362, 2718.
- What is the tax rate in Lajoux?
- The municipal tax multiplier of Lajoux is 220% (2026); canton JU levies 285%.
- How much tax do you pay in Lajoux?
- A single person without children pays about 16'407 CHF income tax in Lajoux on 100'000 CHF gross income (federal, cantonal, municipal), rank 29 of 51 in canton JU. Source: ESTV (2026).
- How many residents does Lajoux have?
- Lajoux has 712 residents (2025).
- How many foreign residents live in Lajoux?
- Lajoux has 65 foreign residents, a share of 9.13% (2025).
Map
OpenStreetMapLajoux compared with
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