Older than 99% of compared French towns: half of Île-d'Arz is over 63
Here 1.7% of homes are flats, where the figure in the typical compared French town is 30%. Île-d'Arz had 321 residents in 180 households at the 2023 census. Single-parent households: 5.6% of the total. Households headed by a manual worker are rarer here than in 95% of compared French towns.
Throughout this page, the Morbihan 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 Île-d'Arz
One home in two is a second home
The census counted 360 second homes and occasional dwellings in Île-d'Arz, 63% of its 580 homes: higher than in 99% of compared French towns. 99% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
An older town
Half of Île-d'Arz’s residents are under 63 and half over; the median of compared French towns is 44. 46% are 65 or older (France median 22%), 8.5% 80 or older. Ages ↓
Growing fast
Île-d'Arz had 246 residents at the 2012 census and 321 in 2023, up 30%: faster growth than in 97% of compared French towns. Population ↓
Many graduates
49% of residents 15 and over who have left education hold a diploma above the bac, 18% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Île-d'Arz ranks above 99% of compared French towns on second homes: 63%
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: nearly one in ten households moved in less than two years ago, and 19% have lived in their home 30 years or more. Against that, 2.1% of homes are second homes in the typical compared French town. 51% of households have no car, more than in 99% of compared French towns. There is little gap on empty homes: 6.1%, about the same as in the typical compared French town.
Since 2012, Île-d'Arz has grown +30%, faster than 97% 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 compared French town changed +5% over the same years, the median Morbihan town +7%. The change was −9% from 2012 to 2017 and +43% from 2017 to 2023.
Residents aged 65 and over make up 46% in Île-d'Arz, more than in 99% 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
■ Île-d'Arz 63. The median compared French town: 44.
2.9% of residents are 15 to 24 (typical compared French town: 11%). For comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
49% women, 51% men
About an even split. Median share of women: Morbihan 51.6%, France 51.8%.
Fewer couples with children than 99% of compared French towns: 8.6%
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 Morbihan median and the France median
Living alone · share
One-person households make up 41%, against 35% in the typical compared French town. Typically, 25% of households are couples with children in the typical compared French town. Households average 1.8 people.
Median living standard: €29,530 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 residents live in households above €29,530 a year per consumption unit and half below; the level is higher than in 82% of compared French towns.
Households headed by a retired person: 50%, a higher share than 97% 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 manager or professional account for 8.3%. Across the comparison, 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).
Below 99% of compared French towns: 0.9% 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.
The share of foreign nationals is 0.3%, against 4.3% in the typical compared French town. Elsewhere, 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.
Île-d'Arz sits below 99% of compared French towns for single residents (14%)
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
55% of residents 15 and over are married; in the typical compared French town the figure is 43%. The benchmark for single residents in the typical compared French town: 25%.
Adults with no qualification make up 9% in Île-d'Arz, less than in 97% 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
Where 30% of adults out of school hold a higher-education qualification in the typical compared French town, Île-d'Arz has 49%. In the typical compared French town, the share of adults with no qualification is 19%.
The oldest of 41 French towns of 321 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 Île-d'Arz (63).
Older than Île-d'Arz: 1 of the 6 towns nearby
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 Île-d'Arz
What is the population of Île-d'Arz?
321 at INSEE’s 2023 census, 30% more than in 2012 (246).
How old are Île-d'Arz’s residents?
The median age is 63, older than 99% of compared French towns. 7.7% are under 18 and 46% 65 or older.
How many second homes are there in Île-d'Arz?
360, with occasional dwellings: 63% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Île-d'Arz?
INSEE counts 3 immigrants (born abroad, not French at birth), 0.9% of residents, and 1 foreign nationals (0.3%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Île-d'Arz?
€29,530 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.