Second homes make up 34% in Tréflez, more than in 95% of compared French towns
Against a figure of 30% in the typical compared French town, the share of flats in Tréflez comes in at 1.3%. This Finistère town has fewer residents aged 15 to 24 than 92% of compared French towns, at 8.1%. Census day 2023: 991 residents and 450 households here. The share of households without a car stands at 3.1%.
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.
What stands out about the people of Tréflez
One home in three is a second home
The census counted 250 second homes and occasional dwellings in Tréflez, 34% of its 750 homes: higher than in 95% of compared French towns. 97% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Tréflez sits below 98% of compared French towns for households in social housing (1.3%)
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
Empty homes: 5.6% here and 6.7% in the typical compared French town. Elsewhere, 12% of households rent social housing (HLM) in the typical compared French town.
From 2012 to 2023, Tréflez outgrew 66% of compared French towns: +9%
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
Over the same years the median compared French town changed +5%, the median Finistère town +4%.
Tréflez is older than 83% of compared French towns: a median age of 50.1
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Tréflez 50.1. The median compared French town: 44.
Residents aged 65 and over make up 24%, against 22% in the typical compared French town.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Finistère 51.7%, France 51.8%.
Only 30% of households are one person living alone in Tréflez
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
With single-parent households at 8.9%, Tréflez is behind 68% of compared French towns on that count. There are 2.2 people in the average household. The town has more couples with children than 52% of compared French towns, at 26%. As a reference point, just over a third of households are one person living alone in the typical compared French town.
A typical living standard of €25,520 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 €25,520 a year: lower than in 54% of compared French towns.
A smaller share of households headed by a retired person than 75% of compared French towns: 28%
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
The share of households headed by a manual worker tops 67% of compared French towns: 17%. Set beside that, 32% of households are headed by a retired person in the typical compared French town. Put another way, about one in 11: nearly one in ten households are headed by a manager or professional.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
1.9% of residents are immigrants, below 93% 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.
In the typical compared French town, the share of foreign nationals is 4.3%; Tréflez has 1.2%. The median compared commune in Finistère has 2.4%; immigrants here make up a share lower than in 93% of compared French towns. The usual figure: 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 single residents than 93% of compared French towns: 20%
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
With married residents at 50%, Tréflez is ahead of 91% of compared French towns on that count. The usual figure: a quarter of residents 15 and over are single in the typical compared French town.
Below 87% of compared French towns: 12% of adults out of school have no qualification
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
Lower than in 53% of compared French towns: 29% of adults out of school hold a higher-education qualification. Set beside that, nearly a fifth of adults out of school have no qualification in the typical compared French town.
14th highest median age among 41 French towns of 991 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.
2 of 6 neighbors are older than Tréflez
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Tréflez | 50.1 | 24% | 34% | 1.9% |
| Plouescat 3,554 · 4.2 mi | 54.5 | 34% | 27% | 2% |
| Lesneven 7,566 · 4.6 mi | 46.5 | 25% | 2.6% | 2% |
| Le Folgoët 3,315 · 5.6 mi | 48.1 | 26% | 0.9% | 1.2% |
| Ploudaniel 3,732 · 7 mi | 43.4 | 21% | 2.2% | 1.6% |
| Cléder 3,584 · 7 mi | 53.1 | 28% | 26% | 1.8% |
| Plouédern 3,103 · 10.2 mi | 40 | 18% | 1.6% | 1.7% |
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 Tréflez
What is the population of Tréflez?
991 at INSEE’s 2023 census, 9% more than in 2012 (911).
How old are Tréflez’s residents?
The median age is 50.1, older than 83% of compared French towns. 19% are under 18 and 24% 65 or older.
How many second homes are there in Tréflez?
250, with occasional dwellings: 34% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Tréflez?
INSEE counts 19 immigrants (born abroad, not French at birth), 1.9% of residents, and 12 foreign nationals (1.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Tréflez?
€25,520 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 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.