Half of Mézilles is over 55.2, older than 94% of compared French towns
By its share of couples with children (12%), Mézilles is below 97% of compared French towns. The 2023 Census counted 520 residents in 280 households. Locally, 7.8% of homes are flats. Compared with other places, households headed by a retired person are common here: 45%, more than in 92% of compared French towns.
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 Mézilles
One home in four is a second home
The census counted 120 second homes and occasional dwellings in Mézilles, 27% of its 430 homes: higher than in 95% of compared French towns. 92% 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
Mézilles had 584 residents at the 2012 census and 520 in 2023, down 11%: slower growth than in 98% of compared French towns. Population ↓
An older town
Half of Mézilles’ residents are under 55.2 and half over; the median of compared French towns is 44. 34% are 65 or older (France median 22%), 7.1% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
27% of homes in Mézilles 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
6.1% of households have no car (typical compared French town: 11%). The wider picture: 2.1% of homes are second homes in the typical compared French town. Across Mézilles, 7.5% of homes stand empty. Households in social housing are rarer here than in 81% of compared French towns.
−11% 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
The median Yonne town changed −4% and the median compared French town +5%; here the first five years brought −6% and the next six −5%.
Mézilles sits below 98% of compared French towns for residents aged 15 to 24 (6.7%)
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Mézilles 55.2. The median compared French town: 44.
In Mézilles, 34% of residents are 65 or over, beside 22% in the typical compared French town. Elsewhere, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Yonne 52.2%, France 51.8%.
In Mézilles, 3.5% 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
Where 35% of households are one person living alone in the typical compared French town, Mézilles has 47%. Across the comparison, 10% of households are single parents in the typical compared French town.
Median living standard: €23,700 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.
Half of Mézilles’ residents live in households with a standard of living below €23,700 a year per consumption unit, and half above: lower than in 75% of compared French towns.
Mézilles ranks below 82% of compared French towns on households headed by a manager or professional: 5.4%
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 manual worker account for 14%. The usual figure: nearly one in ten households are headed by a manager or professional in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants: 3.1%, a lower share than 81% 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.
The share of foreign nationals is 1.7%, against 4.3% in the typical compared French town. The benchmark for immigrants in the typical compared French town: 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
In Mézilles, 40% of residents 15 and over are married, fewer than in 71% 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 Mézilles, 25% of residents 15 and over are single. The share of married residents in the typical compared French town is 43%.
A higher share of adults with no qualification than 68% of compared French towns, at 23%
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, 28% of adults out of school hold a higher-education qualification in Mézilles. For comparison, 19% of adults out of school have no qualification in the typical compared French town.
41 French towns of 520 to 2,582 people: this is the 6th 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.
Nearby, 1 of 3 towns have older populations than Mézilles
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Mézilles | 55.2 | 34% | 27% | 3.1% |
| Toucy 2,571 · 6.2 mi | 52.2 | 32% | 4.2% | 4.3% |
| Charny Orée de Puisaye 4,900 · 13.3 mi | 56 | 35% | 23% | 3.3% |
| Montholon 2,709 · 15.5 mi | 51.9 | 31% | 7.9% | 3.7% |
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 Mézilles
What is the population of Mézilles?
520 at INSEE’s 2023 census, 11% fewer than in 2012 (584).
How old are Mézilles’ residents?
The median age is 55.2, older than 94% of compared French towns. 14% are under 18 and 34% 65 or older.
How many second homes are there in Mézilles?
120, with occasional dwellings: 27% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Mézilles?
INSEE counts 16 immigrants (born abroad, not French at birth), 3.1% of residents, and 9 foreign nationals (1.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Mézilles?
€23,700 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.