Lajoux (JU): population and statistics
Lajoux (JU) has a population of 712 (2025) across 12.4 km², or 57.5 people per km². It ranks 1,648 of 2,115 municipalities by population. Its population is growing: +7.9% between 2015 and 2025.
- 712 residents
- 12.4 km²
- 58 people/km²
- 959 m
Key points
Among the 50 municipalities in Jura, Lajoux (JU) ranks No. 27 by population.
Share of sole proprietorships among registered entities: 46.9% in Lajoux (JU), compared with an average of 31.4% in Jura and 26.1% nationally.
Rooftop solar potential per inhabitant: 17,697 kWh/inh. in Lajoux (JU), compared with an average of 13,301 kWh/inh. in Jura and 7,100 kWh/inh. nationally.
A 1 kWp solar panel tilted at 38° generates about 1,140 kWh a year here.
Lajoux (JU) in numbers
Where is Lajoux (JU)?
Population of Lajoux (JU) over time
Lajoux (JU) had 660 residents in 2015 and 712 in 2025.
| Year | Population |
|---|---|
| 2020 | 671 |
| 2021 | 701 |
| 2022 | 705 |
| 2023 | 710 |
| 2024 | 720 |
| 2025 | 712 |
Did you know?
- “Share of sole proprietorships among registered entities”: higher than in 98% of municipalities.
- “Rooftop solar potential per inhabitant”: higher than in 92% of municipalities.
- Its area is roughly equal to 1,734 football pitches.
- Its population density is 4.0 times lower than the national average.
- The nearest municipality is Saulcy, 2.4 km away.
- The nearest more populous municipality is Tramelan (4,670 residents), 6.9 km away.
- A 4 kWp rooftop solar system here would generate about 4,560 kWh a year, roughly what an average household uses.
All indicators for Lajoux (JU)
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 | Lajoux (JU) | Jura | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 65 and over (2025) | 23.6% | 23.3% | 20.7% | ranked 440 of 1,811 |
Housing
| Indicator | Lajoux (JU) | Jura | National | Position? | Rank |
|---|---|---|---|---|---|
| Dwellings (2026) | 384 | 42,518 | 4,927,050 | ranked 1,656 of 2,108 | |
| Dwellings in buildings built before 1946 (2026) | 35.2% | 31.6% | 23.3% | ranked 406 of 1,806 | |
| Dwellings in buildings built since 2001 (2026) | 19.5% | 20.0% | 25.3% | ranked 1,275 of 1,806 | |
| Share of single-family houses among residential buildings (2026) | 78.2% | 75.3% | 69.5% | ranked 324 of 1,806 |
Energy
| Indicator | Lajoux (JU) | Jura | National | Position? | Rank |
|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 48.9% | 57.3% | 53.5% | ranked 1,068 of 1,806 | |
| Heat pumps as main heating (2026) | 17.0% | 19.5% | 13.7% | ranked 723 of 1,806 | |
| Wood heating systems (2026) | 25.1% | 13.2% | 12.4% | ranked 368 of 1,806 | |
| District heating (2026) | 0.8% | 4.1% | 1.4% | ranked 1,069 of 1,806 | |
| Photovoltaic installations (2026) | 83 | 5,556 | 329,600 | ranked 1,229 of 2,108 | |
| Installed photovoltaic capacity per 1,000 inhabitants (2026) | 1,847 kW | 1,771 kW | 1,134 kW | ranked 284 of 1,806 | |
| Rooftop solar electricity potential (2026) | 12.6 GWh/year | 1,000.0 GWh/year | 64,783 GWh/year | ranked 1,375 of 2,114 | |
| Rooftop solar potential per inhabitant (2026) | 17,697 kWh/inh. | 13,301 kWh/inh. | 9,356 kWh/inh. | ranked 140 of 1,810 |
Economy
| Indicator | Lajoux (JU) | Jura | National | Position? | Rank |
|---|---|---|---|---|---|
| Establishments (2024) | 48 | 6,862 | 728,011 | ranked 1,720 of 2,112 | |
| Entities listed in the commercial register (2026) | 32 | 6,411 | 762,757 | ranked 1,778 of 2,115 | |
| Entities in the commercial register per 1,000 inhabitants (2026) | 44.9 | 85.3 | 64.9 | ranked 1,666 of 1,811 | |
| Share of limited companies (AG, GmbH) among registered entities (2026) | 50.0% | 63.0% | 65.7% | ranked 1,722 of 1,808 | |
| Share of sole proprietorships among registered entities (2026) | 46.9% | 31.4% | 29.0% | ranked 39 of 1,808 |
Employment
| Indicator | Lajoux (JU) | Jura | National | Position? | Rank |
|---|---|---|---|---|---|
| Jobs (2024) | 198 | 47,549 | 5,679,518 | ranked 1,624 of 2,111 | |
| Jobs per 1,000 inhabitants (2024) | 278.1 | 632.5 | 362.9 | ranked 1,253 of 1,810 | |
| Share of jobs in services (2024) | 45.5% | 51.6% | 63.6% | ranked 1,469 of 1,804 | |
| Share of jobs in industry and construction (2024) | 34.9% | 38.5% | 24.2% | ranked 442 of 1,776 |
Society
| Indicator | Lajoux (JU) | Jura | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 9.1% | 16.5% | 18.9% | ranked 1,589 of 1,811 |
Sunshine and temperatures: Lajoux (JU)
Frequently asked questions
What is the population of Lajoux (JU)?
Lajoux (JU) has 712 residents (2025), ranking 1,648 of 2,115 municipalities.
How big is Lajoux (JU)?
Lajoux (JU) covers 12.4 km², with a density of 58 people per km².
Is the population of Lajoux (JU) growing?
Between 2015 and 2025, the population of Lajoux (JU) went from 660 to 712, a change of +7.9%.
Where is Lajoux (JU)?
Lajoux (JU) is in Jura. It belongs to District des Franches-Montagnes (district). Latitude 47.281, longitude 7.138.
Share of sole proprietorships among registered entities: what is the figure for Lajoux (JU)?
In Lajoux (JU), “Share of sole proprietorships among registered entities” stands at 46.9% (2026), ranking 39 of 1,808 municipalities; the national median is 29.0%.
Rooftop solar potential per inhabitant: what is the figure for Lajoux (JU)?
In Lajoux (JU), “Rooftop solar potential per inhabitant” stands at 17,697 kWh/inh. (2026), ranking 140 of 1,810 municipalities; the national median is 9,356 kWh/inh..
How much electricity does a solar panel produce in Lajoux (JU)?
In Lajoux (JU), a 1 kWp south-facing system tilted at 38° produces about 1,140 kWh a year.
Which municipalities border Lajoux (JU)?
The nearest to Lajoux (JU) are Saulcy (2.4 km), Saint-Brais (2.7 km), Les Genevez (JU) (3.4 km), Rebévelier (4.4 km), Petit-Val (6.0 km).