A median age of 61.3: Groix is older than 99% of compared French towns
Set against 32% in the typical compared French town, 53% of households are headed by a retired person in Groix. About one in 17: that is how common single-parent households are in Groix (5.9%). On flats, Groix sits lower than 93% of compared French towns: 6.4%. The 2023 Census counted 2,310 residents in 1,260 households.
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 Groix
One home in two is a second home
The census counted 1,510 second homes and occasional dwellings in Groix, 54% of its 2,810 homes: higher than in 98% of compared French towns. 94% 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 Groix’s residents are under 61.3 and half over; the median of compared French towns is 44. 43% are 65 or older (France median 22%), 12% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Above 98% of compared French towns: 54% of homes 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
In the typical compared French town, the share of households without a car is 11%; Groix has 19%. 1.5% of homes stand empty, or about one in 67. At 12%, the share of households in social housing is lower than in just over half of compared French towns. For second homes, the comparison in the typical compared French town is 2.1%.
Slower growth than 54% of compared French towns: Groix changed by +4% since 2012
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
Against +5% for the median compared French town and +7% for the median Morbihan town, the change came in two steps: +2% from 2012 to 2017, then +2% to 2023.
43% of residents are 65 or over, 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
■ Groix 61.3. The median compared French town: 44.
Where 11% of residents are 15 to 24 in the typical compared French town, Groix has 5.9%. To put it in context, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
53% women, 47% men
About 90 men for every 100 women. Median share of women: Morbihan 51.6%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
Couples with children: 12%, a lower share than 97% 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 Morbihan median and the France median
Living alone · share
The share of one-person households is 47%, against 35% in the typical compared French town. For comparison, a quarter of households are couples with children in the typical compared French town. There are 1.8 people in the average household.
Per consumption unit, the median standard of living is €26,190 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.
Per consumption unit, half of residents live on more than €26,190 a year: higher than in 52% of compared French towns. Poverty touches 15.0% of residents.
4.4% of households are headed by a manager or professional, below 90% 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
Set against 14% in the typical compared French town, nearly one in ten households are headed by a manual worker in Groix. As a reference point, 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).
In Groix, 3.4% of residents are immigrants, fewer than in 78% 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.
Against a figure of 4.3% in the typical compared French town, the share of foreign nationals in Groix comes in at 2.2%. To put it in context, 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.
20% of residents 15 and over are single, below 91% 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
The figure for married residents is 47% in Groix and 43% in the typical compared French town. To put it in context, 25% of residents 15 and over are single in the typical compared French town.
Groix: 32% of adults out of school hold a higher-education qualification, above 58% 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
Adults with no qualification account for 18%. For comparison, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
Of 41 French towns its size (2,310 to 2,582 people), the 2nd 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
No nearby town is as old as Groix
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Groix | 61.3 | 43% | 54% | 3.4% |
| Larmor-Plage 8,418 · 6.2 mi | 60.6 | 42% | 20% | 2.3% |
| Ploemeur 18,872 · 6.4 mi | 55.9 | 34% | 15% | 2.3% |
| Port-Louis 2,608 · 7 mi | 57.7 | 38% | 26% | 1.6% |
| Locmiquélic 4,093 · 8.2 mi | 53.5 | 31% | 10% | 1.7% |
| Riantec 5,865 · 8.4 mi | 54.3 | 33% | 12% | 1.5% |
| Lorient 58,329 · 8.6 mi | 41.7 | 23% | 3.8% | 10% |
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 Groix
What is the population of Groix?
2,310 at INSEE’s 2023 census, 4% more than in 2012 (2,223).
How old are Groix’s residents?
The median age is 61.3, older than 99% of compared French towns. 12% are under 18 and 43% 65 or older.
How many second homes are there in Groix?
1,510, with occasional dwellings: 54% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Groix?
INSEE counts 79 immigrants (born abroad, not French at birth), 3.4% of residents, and 51 foreign nationals (2.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Groix?
€26,190 a year per consumption unit in 2023 (median of compared French towns €25,970); 15.0% of residents live below the poverty line. 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.