Chassy ranks below 99% of compared French towns on flats: 2.9%
In the typical compared French town, just over one in ten households have no car; in Chassy, 5.1%. Census day 2023: 472 residents and 220 households locally. The census found that 6.9% of residents are 15 to 24 in the town. More empty homes than in 79% of compared French towns: 10%.
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 Chassy
One home in eight is a second home
The census counted 35 second homes and occasional dwellings in Chassy, 12% of its 280 homes: higher than in 90% 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 ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A town of second homes: 12% of its 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
Of all households, 6% moved in during the last two years and 22% have stayed three decades or more. Households in social housing are rarer here than in 99% of compared French towns. As a yardstick, 2.1% of homes are second homes in the typical compared French town.
A change of +3% since 2012 leaves Chassy behind 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
From 2012 to 2017 the change was ±0%; from 2017 to 2023, +3%. Over the same years the median compared French town changed +5%, the median Yonne town −4%.
Half of Chassy is over 44.6, older than 54% 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
■ Chassy 44.6. The median compared French town: 44.
Residents aged 65 and over make up about one in five here (22%).
Women and men · all residents
48% women, 52% men
About 106 men for every 100 women. Median share of women: Yonne 52.2%, France 51.8%.
Single-parent households: 2.3%, a lower share than 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 Yonne median and the France median
Living alone · share
Average household size: 2.2 people. The usual figure: 10% of households are single parents in the typical compared French town. Higher than in three quarters of compared French towns: 30% of households are couples with children. At 35%, the share of one-person households is in line with the figure in the typical compared French town.
Half of residents have a standard of living above €28,560 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.
Living standards centre on €28,560 a year per consumption unit: higher than in 75% of compared French towns.
More households headed by a retired person than 83% of compared French towns: 40%
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
The share of households headed by a manager or professional is 7%, against 9.4% in the typical compared French town. Households headed by a manual worker make up about one in five here (21%). Against that, nearly a third 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).
Fewer immigrants than 82% of compared French towns: 3%
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.
In the typical compared French town, 4.3% of residents are foreign nationals; in Chassy, 1.9%. The share of immigrants in the typical compared French town is 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
A lower share of single residents than 99% of compared French towns, at 17%
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
Here, 44% of residents 15 and over are married. Single residents: 25% in the typical compared French town, for comparison.
In Chassy, 15% of adults out of school have no qualification, fewer than in 75% 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
Graduates of higher education come to 31% in Chassy, about three in ten. As a reference point, 19% of adults out of school have no qualification in the typical compared French town.
The 17th youngest of 41 French towns of 472 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.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
5 of 6 neighbors are older than Chassy
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 Chassy
What is the population of Chassy?
472 at INSEE’s 2023 census, 3% more than in 2012 (459).
How old are Chassy’s residents?
The median age is 44.6, older than 54% of compared French towns. 21% are under 18 and 22% 65 or older.
How many second homes are there in Chassy?
35, with occasional dwellings: 12% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Chassy?
INSEE counts 14 immigrants (born abroad, not French at birth), 3% of residents, and 9 foreign nationals (1.9%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Chassy?
€28,560 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 4, 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.