Data highlights are ordered by what stands out in Treffrin.
Who lives here
Older residents shape Treffrin: 33% are 65 or over, above Côtes-d'Armor’s towns and compared French towns
People aged 15 to 24 make up 7.4% of the town, below both Côtes-d'Armor’s towns (9.3%) and compared French towns (11%). One measure of family life: 14% of residents are under 15. Graduates make up just over a quarter of adults.
52.3median age
TreffrinCôtes-d'Armor medianFrance median
Ages · share of residents
33%
Under 1515–2425–4445–6465+
Highest diploma · residents 15 and older who have left education
No diploma17%
CAP or BEP31%
Baccalauréat21%
Higher education26%
Women and men · all residents
50% women, 50% men
WomenFrance medianMen
About an even split. Median share of women: Côtes-d'Armor 52.9%, France 51.8%.
INSEE, census 2023 · Côtes-d'Armor median and France median: the median of compared communes
History
3 historic monuments, 1 classé
France has no History Grade yet: this card describes, it doesn’t grade.
6.6% of its homes were built before 1919, lower than both Côtes-d'Armor’s towns (10%) and compared French towns (7.4%). Among the classé monuments in Treffrin is Pont gaulois dit de Sainte-Catherine (également sur commune de Plounévézel, dans le Finistère). On the Culture ministry’s list, Treffrin counts 3 historic monuments: 1 classé at the top level of protection and 2 inscrit at the second.
Ministère de la Culture, Mérimée (Licence Ouverte 2.0) · INSEE, census 2023, homes by build period
Work & commute
Only 2.6% of commuters in Treffrin go to work without a car, fewer than in both Côtes-d'Armor’s towns and compared French towns
Jobs based in Treffrin number 50, against 200 residents in work (0.2 per worker). Unemployment stood at 7.8%, below Côtes-d'Armor’s towns (9.6%) and compared French towns (10.1%) alike. After tax and benefits, the median income is €25,620 a year per consumption unit.
3%walk, cycle or take transit
How working residents got to work · census 2023
Driving94%
On foot2%
Public transport1%
Motorbike or scooter1%
Bicycle0%
50
jobs based in Treffrin, 0.2 per working resident
7.8%
unemployment rate, ages 15 to 64 in the labor force · median of compared French towns 10.1%
€25,620
median annual income per consumption unit, 2023 · median of compared French towns €25,970
Source: INSEE, census 2023 (commuting, employment, jobs at place of work); INSEE, Filosofi 2023 · Licence Ouverte
Schools
75.6% of candidates passed the brevet at the two collèges within 5 km, 8.2 points below the expected rate
Primary schools aren’t graded: France doesn’t publish their results by school.
At the lycées within 5 km of Treffrin, 94.6% passed the bac, lower than Côtes-d'Armor’s towns (96.1%) yet higher than compared French towns (92.9%). Collège pupils travel 1.6 mi to the nearest one.
People: INSEE, census 2023. Miles: center to center.
About Treffrin
Commune in Côtes-d'Armor, Brittany
Treffrin is a commune of 516 people in the Communauté de communes Poher communauté. TownRatings compares communes, France’s local unit: each has its own mayor and its own statistics. Its area takes in the town and the countryside around it.
Built from INSEE’s 2026 official geography (COG) and IGN Admin Express boundaries
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.
