Tréflaouénan sits below 99% of compared French towns for flats (0.7%)
The share of second homes is 8.7%, against 2.1% in the typical compared French town. Tréflaouénan had 518 residents in 230 households at the 2023 Census. For Tréflaouénan, the census puts households without a car at 3%. 24% of households are headed by a manual worker, a higher share than in 95% of compared French towns.
Throughout this page, the Finistère 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.
Slower growth than 76% of compared French towns: Tréflaouénan changed by −2% 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
For comparison, the median compared French town changed +5% and the median Finistère town +4%. The first five years brought −3%; the six to 2023, +2%.
Only 16% of residents are 65 or over in Tréflaouénan
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Tréflaouénan 43.1. The median compared French town: 44.
Against a figure of 11% in the typical compared French town, the share of residents aged 15 to 24 in Tréflaouénan comes in at 8.5%. Typically, 22% of residents are 65 or over in the typical compared French town. The median age here is 43.1, lower than in 57% of compared French towns.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Finistère 51.7%, France 51.8%.
In Tréflaouénan, 30% of households are couples with children, more than in 75% 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 Finistère median and the France median
Living alone · share
Households average 2.3 people. For comparison, 25% of households are couples with children in the typical compared French town. Single-parent households are rarer here than in 70% of compared French towns. Tréflaouénan sits close to the norm on one-person households: 35%, about the same as in the typical compared French town.
Empty homes: 9.1%, a higher share than 73% 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
Compared with 12% in the typical compared French town, nearly one in ten households rent social housing (HLM) here. The comparison figure for empty homes is 6.7% in the typical compared French town. Households that moved in under two years ago: 7.5%. Those in their home 30 years or more: 23%.
A median of €25,500 a year per consumption unit
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 Tréflaouénan’s residents live in households with a standard of living below €25,500 a year per consumption unit, and half above: lower than in 54% of compared French towns.
Below 83% of compared French towns: 25% of households are headed by a retired person
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
Nearly one in ten households are headed by a manager or professional. The share of households headed by a retired person in the typical compared French town is 32%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Below 63% of compared French towns: 5% 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 stands at 4.8%. By way of comparison, 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.
Fewer married residents than 58% of compared French towns: 42%
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
26% of residents 15 and over are single. In the median compared French town 43% are married and 6.1% in a PACS; here it is 42% and 11%, and 6.3% are widowed.
A lower share of adults with no qualification than 88% of compared French towns, at 12%
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
In the typical compared French town, the share of graduates of higher education is 30%; Tréflaouénan has 28%. The usual figure: 19% of adults out of school have no qualification in the typical compared French town.
12th lowest median age among 41 French towns of 518 to 2,582
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.
Tréflaouénan is younger than every town around it
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 Tréflaouénan
What is the population of Tréflaouénan?
518 at INSEE’s 2023 census, 2% fewer than in 2012 (526).
How old are Tréflaouénan’s residents?
The median age is 43.1, younger than 57% of compared French towns. 24% are under 18 and 16% 65 or older.
How many second homes are there in Tréflaouénan?
24, with occasional dwellings: 8.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Tréflaouénan?
INSEE counts 26 immigrants (born abroad, not French at birth), 5% of residents, and 25 foreign nationals (4.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Tréflaouénan?
€25,500 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.