Only 6.7% of households are couples with children in Chastellux-sur-Cure
Households in social housing are rarer here than in 99% of compared French towns. The 2023 Census put Chastellux-sur-Cure’s population at 129, in 67 households. 6.1% of residents are 15 to 24. The share of empty homes tops 84% of compared French towns: 11%.
Throughout this page, the Yonne 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 Chastellux-sur-Cure
One home in two is a second home
The census counted 70 second homes and occasional dwellings in Chastellux-sur-Cure, 45% of its 150 homes: higher than in 97% 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 ↓
Fewer residents than in 2012
Chastellux-sur-Cure had 147 residents at the 2012 census and 129 in 2023, down 12%: slower growth than in 98% of compared French towns. Population ↓
An older town
Half of Chastellux-sur-Cure’s residents are under 53.9 and half over; the median of compared French towns is 44. 32% are 65 or older (France median 22%), 9.2% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Second homes: 45%, a higher share than 97% of compared French towns
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
In the last two years, 7.4% of households moved in; at the other end, 21% have stayed 30 years or more. Compared with other places, flats are scarce here: 1.3%, fewer than in 99% of compared French towns. The wider picture: 2.1% of homes are second homes in the typical compared French town. Where just over one in ten households have no car in the typical compared French town, Chastellux-sur-Cure has 2.9%.
−12% since 2012: slower than 98% 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
From 2012 to 2017 the population moved −7%, and from 2017 to 2023 −5%; the median compared French town changed +5% and the median Yonne town −4%.
Older than 92% of compared French towns: half of Chastellux-sur-Cure is over 53.9
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Chastellux-sur-Cure 53.9. The median compared French town: 44.
Here 32% of residents are 65 or over, where the figure in the typical compared French town is 22%.
Women and men · all residents
53% women, 47% men
About 90 men for every 100 women. Median share of women: Yonne 52.2%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
A larger share of one-person households than 88% of compared French towns: 47%
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 Yonne median and the France median
Living alone · share
The typical household size is 1.9 people. For one-person households, the comparison in the typical compared French town is 35%. Single-parent households make up about one in eight here (13%).
Median living standard: €22,810 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.
Per consumption unit, half of residents live on more than €22,810 a year: lower than in 83% of compared French towns.
Chastellux-sur-Cure: 40% of households are headed by a retired person, above 83% 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
Where nearly one in ten households are headed by a manager or professional in the typical compared French town, Chastellux-sur-Cure has 13%. To put it in context, nearly a third of households are headed by a retired person in the typical compared French town. Households headed by a manual worker account for 20%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Below 97% of compared French towns: 0.8% of residents are foreign nationals
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.
Against a figure of 6.5% in the typical compared French town, the share of immigrants in Chastellux-sur-Cure comes in at 3.1%. That is lower than in 81% of compared French towns; the median compared commune in Yonne has 9.2%. Foreign nationals: 4.3% in the typical compared French town, for comparison.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Chastellux-sur-Cure sits above 59% of compared French towns for single residents (27%)
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
Census figures put married residents at 44% in Chastellux-sur-Cure. In the typical compared French town, single residents come to 25%.
A smaller share of adults with no qualification than 55% of compared French towns: 18%
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
Across Chastellux-sur-Cure, 29% of adults out of school hold a higher-education qualification. The benchmark for adults with no qualification in the typical compared French town: 19%.
Among 41 French towns of 129 to 2,582 people, the 7th 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
Chastellux-sur-Cure is older than every town around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
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 Chastellux-sur-Cure
What is the population of Chastellux-sur-Cure?
129 at INSEE’s 2023 census, 12% fewer than in 2012 (147).
How old are Chastellux-sur-Cure’s residents?
The median age is 53.9, older than 92% of compared French towns. 15% are under 18 and 32% 65 or older.
How many second homes are there in Chastellux-sur-Cure?
70, with occasional dwellings: 45% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Chastellux-sur-Cure?
INSEE counts 4 immigrants (born abroad, not French at birth), 3.1% of residents, and 1 foreign nationals (0.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Chastellux-sur-Cure?
€22,810 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.