Fewer households without a car than 99% of compared French towns: 2%
By its share of couples with children (18%), Tréogan is below just over four fifths of compared French towns. 106 residents in 51 households: that is Tréogan at the 2023 Census. The share of households headed by a retired person stands at 36%. With a median age of 45, Tréogan is older than 57% of compared French towns.
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 Tréogan
One home in six is a second home
The census counted 13 second homes and occasional dwellings in Tréogan, 16% of its 80 homes: higher than in 92% of compared French towns. 85% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Empty homes
The census found 16 homes empty (20%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Above 99% of compared French towns: 20% of homes stand empty
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 Tréogan, 16% of homes are second homes, beside 2.1% in the typical compared French town. For comparison, 6.7% of homes stand empty in the typical compared French town.
From 2012 to 2023, Tréogan outgrew 59% of compared French towns: +7%
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%. From 2012 to 2017 the change was +1%; from 2017 to 2023, +6%.
Above 59% of compared French towns: 24% of residents are 65 or over
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Tréogan 45. The median compared French town: 44.
Residents aged 15 to 24 are about as common here as in the typical compared French town: 11%. Typically, 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: Côtes-d'Armor 52.9%, France 51.8%.
In Tréogan, 45% of households are one person living alone, more than in 85% 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 people. Against that, just over a third of households are one person living alone in the typical compared French town. On single-parent households, Tréogan sits lower than 65% of compared French towns: 9.1%.
Households headed by a manual worker: 18%, a higher share than 75% 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 are rarer here than in 99% of compared French towns. The share of households headed by a manual worker in the typical compared French town is 14%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Only 3.8% of residents are immigrants in Tréogan
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 median compared commune in Côtes-d'Armor has 2.7%; immigrants here make up a share lower than in 75% of compared French towns. Foreign nationals account for 1.9%. The wider picture: 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.
Tréogan sits above 89% of compared French towns for single residents (33%)
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
In the typical compared French town, the share of married residents is 43%; Tréogan has 40%. Elsewhere, 25% of residents 15 and over are single in the typical compared French town.
A lower share of adults with no qualification than 68% of compared French towns, at 16%
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
Against a figure of 30% in the typical compared French town, the share of graduates of higher education in Tréogan comes in at 32%. As a reference point, 19% of adults out of school have no qualification in the typical compared French town.
Of 41 French towns its size (106 to 2,582 people), the 20th youngest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
No nearby town is as young as Tréogan
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Tréogan | 45 | 24% | 16% | 3.8% |
| Gourin 3,960 · 4.7 mi | 55.3 | 33% | 7.6% | 4.3% |
| Carhaix-Plouguer 7,412 · 6.2 mi | 52.2 | 32% | 3.9% | 6% |
| Rostrenen 3,282 · 10.5 mi | 54.6 | 34% | 8.3% | 6.8% |
| Le Faouët 2,814 · 10.5 mi | 56.1 | 37% | 8.2% | 3.8% |
| Châteauneuf-du-Faou 3,651 · 13.3 mi | 51.2 | 30% | 15% | 7.4% |
| Scaër 5,178 · 14.2 mi | 51 | 28% | 4.6% | 2.6% |
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 Tréogan
What is the population of Tréogan?
106 at INSEE’s 2023 census, 7% more than in 2012 (99).
How old are Tréogan’s residents?
The median age is 45, older than 57% of compared French towns. 21% are under 18 and 24% 65 or older.
How many second homes are there in Tréogan?
13, with occasional dwellings: 16% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Tréogan?
INSEE counts 4 immigrants (born abroad, not French at birth), 3.8% of residents, and 2 foreign nationals (1.9%). The medians of compared French towns are 6.5% and 4.3%.
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.