Below 99% of compared French towns: 0.5% of homes are flats
In the typical compared French town, the share of residents aged 15 to 24 is 11%; Cosges has 7.5%. Households without a car: 3% of the total. 47% of households are headed by a retired person, more than in 95% of compared French towns. The town is home to 367 residents in 160 households, by the 2023 Census.
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 Cosges
One home in nine is a second home
The census counted 23 second homes and occasional dwellings in Cosges, 11% of its 200 homes: higher than in 89% 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 ↓
An older town
Half of Cosges’ residents are under 52.2 and half over; the median of compared French towns is 44. 28% are 65 or older (France median 22%), 5.1% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Above 89% of compared French towns: 11% of homes are second homes
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
Households in social housing are rarer here than in 99% of compared French towns. As a reference point, 2.1% of homes are second homes in the typical compared French town. Across Cosges, 6% of homes stand empty.
Growth of +7% since 2012 puts Cosges ahead of 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
For comparison, the median compared French town changed +5% and the median Jura town −4%. The first five years brought +6%; the six to 2023, +1%.
A median age of 52.2: Cosges is older than 89% 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
■ Cosges 52.2. The median compared French town: 44.
In the typical compared French town, the share of residents aged 65 and over is 22%; Cosges has 28%.
Women and men · all residents
48% women, 52% men
About 107 men for every 100 women. Median share of women: Jura 52.0%, France 51.8%.
3.1% of households are single parents, below 99% of compared French towns
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
The share of one-person households is 25%, against 35% in the typical compared French town. In the typical compared French town, 10% of households are single parents.
Median standard of living: €26,510 a year
The standard of living (niveau de vie) is a household’s disposable income after taxes and benefits, divided by its consumption units (UC) to allow for its size and make-up: 1 for the first adult, 0.5 for each other person 14 or older, 0.3 for each child under 14.
Medians of compared communes. Source: INSEE, Filosofi 2023.
At €26,510 a year per consumption unit, the median standard of living here is higher than in 56% of compared French towns.
9.3% of households are headed by a manual worker, fewer than in 80% of compared French towns
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
Households headed by a manager or professional are rarer here than in 99% of compared French towns. Against that, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Only 0.8% of residents are immigrants in Cosges
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. In the typical compared French town, 6.5% of residents are immigrants.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Single residents: 15%, a lower share than 99% 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
In the typical compared French town, the share of married residents is 43%; Cosges has 50%. The benchmark for single residents in the typical compared French town: 25%.
Graduates of higher education: 18%, a lower share than 91% of compared French towns
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
Compared with 19% in the typical compared French town, 18% of adults out of school have no qualification here. Graduates of higher education: 30% in the typical compared French town, for comparison.
41 French towns of 367 to 2,582 people: this is the 8th oldest
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).
Nearby, 1 of 4 towns have older populations than Cosges
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Cosges | 52.2 | 28% | 11% | 0.8% |
| Montmorot 3,261 · 7.9 mi | 46.9 | 27% | 3.5% | 5.6% |
| Lons-le-Saunier 16,618 · 9.2 mi | 47.2 | 28% | 5.4% | 12% |
| Louhans-Châteaurenaud 6,446 · 11.1 mi | 55.4 | 37% | 2.9% | 6.1% |
| Poligny 3,976 · 16.1 mi | 46.4 | 28% | 5.2% | 7.6% |
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 Cosges
What is the population of Cosges?
367 at INSEE’s 2023 census, 7% more than in 2012 (344).
How old are Cosges’ residents?
The median age is 52.2, older than 89% of compared French towns. 19% are under 18 and 28% 65 or older.
How many second homes are there in Cosges?
23, with occasional dwellings: 11% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Cosges?
INSEE counts 3 immigrants (born abroad, not French at birth), 0.8% of residents, and 0 foreign nationals (0%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Cosges?
€26,510 a year per consumption unit in 2023 (median of compared French towns €25,970). Source: INSEE, Filosofi.
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.