A lower share of households in social housing than 97% of compared French towns, at 1.7%
In the typical compared French town, just over one in ten households have no car; in Chemilly-sur-Yonne, 4%. On one-person households, Chemilly-sur-Yonne sits lower than 89% of compared French towns: 27%. There were 400 households here at the 2023 Census, home to 887 residents. 5.1% of homes are flats.
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 Chemilly-sur-Yonne
Fewer residents than in 2012
Chemilly-sur-Yonne had 975 residents at the 2012 census and 887 in 2023, down 9%: slower growth than in 96% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Since 2012, Chemilly-sur-Yonne has changed by −9%, slower than 96% 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
The change was −7% from 2012 to 2017 and −3% from 2017 to 2023. The median compared French town changed +5% over the same years, the median Yonne town −4%.
A lower share of residents aged 15 to 24 than 84% of compared French towns, at 8.9%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Chemilly-sur-Yonne 45.7. The median compared French town: 44.
The median age in Chemilly-sur-Yonne is 45.7, higher than in just over three fifths of compared French towns. Elsewhere, 11% of residents are 15 to 24 in the typical compared French town. Residents aged 65 and over make up about one in four here (23%).
Women and men · all residents
49% women, 51% men
About an even split. Median share of women: Yonne 52.2%, France 51.8%.
In Chemilly-sur-Yonne, 5.1% of households are single parents, fewer than in 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
Households here average 2.2 people each. Higher than in 73% of compared French towns: 29% of households are couples with children. In the typical compared French town, single-parent households come to 10%.
95% of homes are houses
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
Turnover: one in ten households moved in less than two years ago, and 29% have lived in their home 30 years or more. Nothing unusual on second homes: 2.1%, close to the figure in the typical compared French town.
Standard of living at the median: €26,600 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.
The midpoint of living standards here is €26,600 a year per consumption unit, higher than in 57% of compared French towns.
In Chemilly-sur-Yonne, 19% of households are headed by a manual worker, more than in 78% 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 retired person make up 35%, against 32% in the typical compared French town. The census found that 11% of households are headed by a manager or professional in Chemilly-sur-Yonne. Elsewhere, 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).
A smaller share of foreign nationals than 96% of compared French towns: 0.9%
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.
The median compared commune in Yonne has 9.2%; immigrants here make up a share lower than in 85% of compared French towns. On average, 4.3% of residents are foreign nationals in the typical compared French town. In Chemilly-sur-Yonne, 2.7% 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.
A smaller share of single residents than 96% of compared French towns: 19%
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
Against a figure of 43% in the typical compared French town, the share of married residents in Chemilly-sur-Yonne comes in at 49%. Across the comparison, a quarter of residents 15 and over are single in the typical compared French town.
Only 22% of adults out of school hold a higher-education qualification in Chemilly-sur-Yonne
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
On the census count, a fifth of adults out of school have no qualification. The benchmark for graduates of higher education in the typical compared French town: 30%.
41 French towns of 887 to 2,582 people: this is the 21st 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.
Median age: 4 of the 6 towns around Chemilly-sur-Yonne are older
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Chemilly-sur-Yonne | 45.7 | 23% | 2.1% | 2.7% |
| Appoigny 3,114 · 2.4 mi | 50.2 | 28% | 2.7% | 6.2% |
| Monéteau 4,114 · 3.5 mi | 52.1 | 32% | 2% | 6.2% |
| Migennes 6,688 · 5.2 mi | 45.1 | 25% | 1.8% | 17% |
| Saint-Georges-sur-Baulche 3,151 · 6.7 mi | 56.9 | 38% | 1.5% | 6.3% |
| Auxerre 35,097 · 7 mi | 44.1 | 24% | 3.1% | 13% |
| Brienon-sur-Armançon 3,032 · 7.2 mi | 47 | 25% | 7.3% | 6.1% |
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 Chemilly-sur-Yonne
What is the population of Chemilly-sur-Yonne?
887 at INSEE’s 2023 census, 9% fewer than in 2012 (975).
How old are Chemilly-sur-Yonne’s residents?
The median age is 45.7, older than 61% of compared French towns. 20% are under 18 and 23% 65 or older.
How many second homes are there in Chemilly-sur-Yonne?
9, with occasional dwellings: 2.1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Chemilly-sur-Yonne?
INSEE counts 24 immigrants (born abroad, not French at birth), 2.7% of residents, and 8 foreign nationals (0.9%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Chemilly-sur-Yonne?
€26,600 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.