Residents aged 15 to 24: 3.9%, a lower share than 99% of compared French towns
Households without a car: 6.1% here and 11% in the typical compared French town. At the 2023 Census Mercy was home to 77 people in 33 households. Across Mercy, 14% of households are headed by a retired person. 29% of households are one person living alone, fewer than in 83% 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 Mercy
One home in eight is a second home
The census counted 5 second homes and occasional dwellings in Mercy, 12% of its 42 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 ↓
Fewer residents than in 2012
Mercy had 81 residents at the 2012 census and 77 in 2023, down 5%: slower growth than in 88% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Second homes: 12%, a higher share than 89% 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
Households in social housing are rarer here than in 99% of compared French towns. In the typical compared French town, second homes come to 2.1%. The share of empty homes stands at 9.5%. One household in 17 has no car, against 11% in the median compared French town.
Mercy changed by −5% from 2012 to 2023, slower than 88% 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 first five years brought ±0%; the six to 2023, −5%.
Only 17% of residents are 65 or over in Mercy
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Mercy 40.5. The median compared French town: 44.
Half of Mercy’s residents are under 40.5, younger than in 76% of compared French towns. Across the comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 92 men for every 100 women. Median share of women: Yonne 52.2%, France 51.8%.
Fewer couples with children than 93% of compared French towns: 14%
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
Single-parent households are rarer here than in 99% of compared French towns. By way of comparison, 25% of households are couples with children in the typical compared French town. The typical household size is 2.3 people.
14% of households are headed by a manager or professional, a share 74% of compared French towns don’t reach
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 are rarer here than in 99% of compared French towns. In the typical compared French town, the share of households headed by a manager or professional is 9.4%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Below 98% of compared French towns: 1.3% of residents are immigrants
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. The wider picture: 6.5% of residents are immigrants in the typical compared French town.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
16% of residents 15 and over are single, fewer than in 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
Where 43% of residents 15 and over are married in the typical compared French town, Mercy has 52%. For single residents, the comparison in the typical compared French town is 25%.
30% of adults hold a diploma above the bac
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
Nearly a fifth of adults out of school have no qualification, fewer than in 53% of compared French towns. Lower than in 51% of compared French towns: 30% of adults out of school hold a higher-education qualification.
Among 41 French towns of 77 to 2,582 people, the 4th youngest
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).
Mercy is younger than every town around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Mercy | 40.5 | 17% | 12% | 1.3% |
| Brienon-sur-Armançon 3,032 · 2.6 mi | 47 | 25% | 7.3% | 6.1% |
| Saint-Florentin 4,164 · 4.8 mi | 47.7 | 28% | 3.5% | 18% |
| Migennes 6,688 · 6.9 mi | 45.1 | 25% | 1.8% | 17% |
| Joigny 9,016 · 11 mi | 43.4 | 25% | 4.8% | 21% |
| Appoigny 3,114 · 12 mi | 50.2 | 28% | 2.7% | 6.2% |
| Monéteau 4,114 · 12.9 mi | 52.1 | 32% | 2% | 6.2% |
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 Mercy
What is the population of Mercy?
77 at INSEE’s 2023 census, 5% fewer than in 2012 (81).
How old are Mercy’s residents?
The median age is 40.5, younger than 76% of compared French towns. 29% are under 18 and 17% 65 or older.
How many second homes are there in Mercy?
5, with occasional dwellings: 12% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Mercy?
INSEE counts 1 immigrants (born abroad, not French at birth), 1.3% of residents, and 0 foreign nationals (0%). The medians of compared French towns are 6.5% and 4.3%.
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.