Only 0.3% of households rent social housing (HLM) in Trébry
Nearly a quarter of households are headed by a manual worker (typical compared French town: 14%). The 2023 Census put Trébry’s population at 844, in 390 households. Locally, 3.6% of households have no car. On single-parent households, Trébry sits lower than 94% of compared French towns: 6.4%.
Throughout this page, the Côtes-d'Armor 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 Trébry
One home in eight is a second home
The census counted 63 second homes and occasional dwellings in Trébry, 13% of its 490 homes: higher than in 90% of compared French towns. 98% 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.
Trébry ranks below 96% of compared French towns on flats: 4.5%
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
23% of households have been in place 30 years or more; 12% moved in within the last two years. Second homes are more common here than in 90% of compared French towns. At 7.1%, empty homes sit close to the figure in the typical compared French town.
A change of +2% since 2012 leaves Trébry behind 60% 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
Over the same years the median compared French town changed +5%, the median Côtes-d'Armor town +3%.
Half of Trébry is under 42.6, younger than 61% 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
■ Trébry 42.6. The median compared French town: 44.
The figure for residents aged 65 and over is 20% in Trébry and 22% in the typical compared French town. Compared with other places, residents aged 15 to 24 are scarce here: 9.8%, fewer than in two thirds of compared French towns.
Women and men · all residents
48% women, 52% men
About 107 men for every 100 women. Median share of women: Côtes-d'Armor 52.9%, France 51.8%.
One-person households make up 36% in Trébry, more than in 54% 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 Côtes-d'Armor median and the France median
Living alone · share
Households average 2.2 people. The usual figure: just over a third of households are one person living alone in the typical compared French town. At 26%, the share of couples with children is higher than in 52% of compared French towns.
Standard of living at the median: €25,020 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.
The midpoint of living standards here is €25,020 a year per consumption unit, lower than in 60% of compared French towns.
A higher share of households headed by a retired person than 62% of compared French towns, at 35%
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
Here, 9% of households are headed by a manager or professional. Households headed by a retired person make up 32% in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Trébry ranks below 83% of compared French towns on immigrants: 2.8%
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, 4.3% of residents are foreign nationals; in Trébry, 2.7%. As a reference point, 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.
A lower share of single residents than 68% of compared French towns, at 23%
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
For Trébry, the census puts married residents at 43%. To put it in context, a quarter of residents 15 and over are single in the typical compared French town.
13% of adults out of school have no qualification, fewer than in 82% 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, Trébry has 24%. In the typical compared French town, adults with no qualification come to 19%.
Ranked by age, 10th youngest of 41 French towns this size
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.
Around Trébry, 5 of 6 towns have a higher median age
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Trébry | 42.6 | 20% | 13% | 2.8% |
| Le Mené 6,556 · 4.5 mi | 46.1 | 25% | 13% | 13% |
| Plénée-Jugon 2,579 · 6.8 mi | 43.8 | 22% | 7.6% | 2.9% |
| Quessoy 3,969 · 7.3 mi | 42.3 | 22% | 3.3% | 1.5% |
| Lamballe-Armor 17,241 · 9 mi | 47.1 | 25% | 6.7% | 5.4% |
| Plœuc-L'Hermitage 4,103 · 10.3 mi | 46.3 | 25% | 5% | 3.3% |
| Yffiniac 5,074 · 10.4 mi | 44 | 21% | 2.4% | 4% |
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 Trébry
What is the population of Trébry?
844 at INSEE’s 2023 census, 2% more than in 2012 (825).
How old are Trébry’s residents?
The median age is 42.6, younger than 61% of compared French towns. 21% are under 18 and 20% 65 or older.
How many second homes are there in Trébry?
63, with occasional dwellings: 13% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Trébry?
INSEE counts 24 immigrants (born abroad, not French at birth), 2.8% of residents, and 23 foreign nationals (2.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Trébry?
€25,020 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.