Second homes make up 36% in Fontenu, more than in 96% of compared French towns
5.8% of homes are flats (typical compared French town: 30%). Fontenu counted 72 residents and 31 households at the 2023 Census. The census found that 3.1% of households rent social housing (HLM) in the town. Households headed by a manager or professional are rarer here than in 99% of compared French towns.
Throughout this page, the Jura median and the France median are the median of compared communes (those with an overall grade), each figure its own median. Source: INSEE, census 2023.
What stands out about the people of Fontenu
One home in three is a second home
The census counted 18 second homes and occasional dwellings in Fontenu, 36% of its 50 homes: higher than in 96% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
A town of families
33% of households are couples with children and 17% single parents with children; 17% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Below 98% of compared French towns: 3.1% of households have no car
Every home the census counted: main residences, second homes and occasional dwellings (INSEE counts them together), and empty homes. Owning and renting are on Cost of living.
All homes · share of homes
Type of home
Cars per household · share of households
Empty homes: 2% here and 6.7% in the typical compared French town. In the typical compared French town, the share of households without a car is 11%. Newcomers of less than two years account for 13% of households, residents of 30 years or more for 13%.
Fontenu changed by +3% from 2012 to 2023, slower than 58% of compared French towns
Residents at INSEE’s last three censuses, each recast in the 2026 commune boundaries. France has no yearly estimate by commune between censuses.
2012 to 2023
2017 to 2023
Medians for comparison: +5% across compared French towns, −4% in Jura.
Residents aged 65 and over make up 24% in Fontenu, more than in 61% of compared French towns
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Fontenu 44.8. The median compared French town: 44.
Half of Fontenu’s residents are over 44.8, older than in 55% of compared French towns. Measured more widely, 22% of residents are 65 or over in the typical compared French town. Residents aged 15 to 24 come to 11% in the town, about one in ten.
Women and men · all residents
44% women, 56% men
About 79 women for every 100 men. Median share of women: Jura 52.0%, France 51.8%.
Above 98% of compared French towns: 17% of households are single parents
A household is everyone who shares a main home (résidence principale). Household types come from INSEE’s fuller sample of a quarter of census forms.
Against the Jura median and the France median
Living alone · share
In the typical compared French town, 35% of households are one person living alone; in Fontenu, 33%. Each household has 2.3 people on average. Couples with children are more common here than in 88% of compared French towns. Set beside that, one in ten households are single parents in the typical compared French town.
Fewer households headed by a retired person than 98% of compared French towns: 17%
Households by the socio-professional group (PCS) of their reference person, INSEE’s own categories. Jobs and commuting are on the Work & commute page.
Households by reference person’s group · share of households
In the typical compared French town, the share of households headed by a manual worker is 14%; Fontenu has 33%. The usual figure: 32% of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
In Fontenu, 2.7% of residents are immigrants, fewer than in 85% of compared French towns
INSEE publishes two measures, which overlap but aren’t the same. Neither is the UK’s “born abroad”.
Share of residents · census 2023
Immigrant (immigré)
Born abroad, not French at birth. Someone stays an immigrant after becoming French. A French citizen born abroad (for example in Algeria before 1962) is not one.
Foreign national (étranger)
Not a French citizen today, wherever born. A child born in France to foreign parents can be a foreign national without being an immigrant.
Foreign nationals are rarer here than in 99% of compared French towns. The comparison figure for immigrants is 6.5% in the typical compared French town.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Married residents make up 47% in Fontenu, more than in 77% of compared French towns
Residents 15 and over by how they live: the census asks both the legal status and whether people live as a couple.
Residents 15 and over · share
Just over a quarter of residents 15 and over are single. In the typical compared French town, the share of married residents is 43%.
A lower share of adults with no qualification than 99% of compared French towns, at 6.9%
Highest diploma of residents 15 and over who have left education, in French terms: the levels don’t map one-to-one to UK or U.S. ones.
Highest diploma · 15 and over, out of education
Set against 30% in the typical compared French town, 22% of adults out of school hold a higher-education qualification in Fontenu. In the typical compared French town, 19% of adults out of school have no qualification.
The 18th youngest of 41 French towns of 72 to 2,582 people
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Fontenu is younger than 5 of its 6 nearest neighbors
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Fontenu | 44.8 | 24% | 36% | 2.7% |
| Champagnole 8,036 · 6.6 mi | 50.7 | 31% | 1.5% | 7.9% |
| Lons-le-Saunier 16,618 · 12.6 mi | 47.2 | 28% | 5.4% | 12% |
| Poligny 3,976 · 12.9 mi | 46.4 | 28% | 5.2% | 7.6% |
| Hauts de Bienne 5,032 · 13.8 mi | 39.5 | 17% | 6.8% | 20% |
| Montmorot 3,261 · 13.9 mi | 46.9 | 27% | 3.5% | 5.6% |
| Arbois 3,114 · 16.5 mi | 55 | 35% | 6.1% | 5.1% |
Health, work, housing and schools
What this data can and can’t tell you
- Census 2023. INSEE’s census is a rolling survey: a fifth of small communes each year, 8% of homes in large ones each year. “2023” pools the surveys of 2021 to 2025, so the figures describe the town around 2023, not on one day.
- Medians of compared communes. The comparisons are the median of the département’s compared communes and of France’s (those with an overall grade), each figure its own median: not the total for the département or for France, which large cities pull towards their own figures.
- Immigrants and foreign nationals. INSEE’s two measures: an immigrant was born abroad without French nationality; a foreign national isn’t French today. Neither is a count of people born abroad, which INSEE doesn’t publish by commune.
- Second homes. Homes used for holidays or weekends, with occasional dwellings (kept for work, for example), which INSEE counts together. Their owners are counted where they live, not here.
- Standard of living. INSEE’s Filosofi: disposable income per consumption unit, from tax and benefit files, 2023. The poverty rate is the share of residents below 60% of France’s median. Not published for the smallest communes.
- What France doesn’t ask. The French census asks nothing about ethnicity, religion, language or health, so this page has no such section.
Questions about who lives in Fontenu
What is the population of Fontenu?
72 at INSEE’s 2023 census, 3% more than in 2012 (70).
How old are Fontenu’s residents?
The median age is 44.8, older than 55% of compared French towns. 23% are under 18 and 24% 65 or older.
How many second homes are there in Fontenu?
18, with occasional dwellings: 36% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Fontenu?
INSEE counts 2 immigrants (born abroad, not French at birth), 2.7% of residents, and 0 foreign nationals (0%). The medians of compared French towns are 6.5% and 4.3%.
Sources: INSEE, census 2023 (population, ages, households, homes, marital status, diplomas, immigrants, foreign nationals, employment), 2026 geography · INSEE, Filosofi 2023 (standard of living, poverty) · IGN Admin Express (boundaries) · Medians and percentiles: TownRatings, over compared French towns, updated November 9, 2026. Under the Licence Ouverte / Open Licence 2.0 (Etalab).
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.