Households without a car make up 2.6% in La Trinité, less than in 99% of compared French towns
2% of households rent social housing (HLM), against 12% in the typical compared French town. In La Trinité, 32% of households are couples with children. Compared with other places, residents aged 15 to 24 are scarce here: 7.1%, fewer than in 97% of compared French towns. This Savoie town counted 381 residents and 150 households at the 2023 Census.
Throughout this page, the Savoie 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 La Trinité
Growing fast
La Trinité had 300 residents at the 2012 census and 381 in 2023, up 27%: faster growth than in 95% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A +27% change since 2012: La Trinité grew faster than 95% 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
The median compared French town changed +5% over the same years, the median Savoie town +9%. The change was +15% from 2012 to 2017 and +10% from 2017 to 2023.
Younger than 76% of compared French towns: half of La Trinité is under 40.6
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ La Trinité 40.6. The median compared French town: 44.
Compared with 22% in the typical compared French town, 20% of residents are 65 or over here.
Women and men · all residents
51% women, 49% men
About 96 men for every 100 women. Median share of women: Savoie 51.5%, France 51.8%.
Only 22% of households are one person living alone in La Trinité
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 Savoie median and the France median
Living alone · share
On average, 2.5 people share a household. Across the comparison, 35% of households are one person living alone in the typical compared French town. One in ten households are single parents, about the same as in the typical compared French town.
Flats: 5.1%, a lower share than 95% 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
Where 6.7% of homes stand empty in the typical compared French town, La Trinité has 5.1%. This Savoie town has more second homes than 87% of compared French towns, at 9%. By way of comparison, 30% of homes are flats in the typical compared French town.
A median of €28,410 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 residents live in households above €28,410 a year per consumption unit and half below; the level is higher than in 74% of compared French towns.
Households headed by a manual worker: 26%, a higher share than 97% 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
In the typical compared French town, nearly a third of households are headed by a retired person; in La Trinité, 29%. For comparison, 14% of households are headed by a manual worker in the typical compared French town. 16% of households are headed by a manager or professional, or about one in six.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 2.1% in La Trinité, less than in 90% 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.
The share of foreign nationals trails 97% of compared French towns: 0.8%. 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.
Married residents make up 51% in La Trinité, more than in 94% of compared French towns
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, 25% of residents 15 and over are single; in La Trinité, 20%. The benchmark for married residents in the typical compared French town: 43%.
Only 14% of adults out of school have no qualification in La Trinité
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
30% of adults out of school hold a higher-education qualification in the typical compared French town, against 32% in La Trinité. Elsewhere, 19% of adults out of school have no qualification in the typical compared French town.
4th lowest median age among 41 French towns of 381 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.
Every neighbor is older than La Trinité
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| La Trinité | 40.6 | 20% | 9% | 2.1% |
| Valgelon-La Rochette 4,207 · 3.5 mi | 44.1 | 23% | 2.8% | 6.8% |
| Saint-Pierre-d'Albigny 4,217 · 4.5 mi | 45.7 | 24% | 6.8% | 7% |
| Montmélian 4,024 · 4.7 mi | 41.9 | 22% | 1.8% | 16% |
| Porte-de-Savoie 3,974 · 7.3 mi | 42.2 | 19% | 5.5% | 4.2% |
| Pontcharra 7,350 · 8.2 mi | 42.6 | 21% | 1.8% | 8.8% |
| Allevard 3,971 · 8.4 mi | 46 | 22% | 29% | 7.5% |
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 La Trinité
What is the population of La Trinité?
381 at INSEE’s 2023 census, 27% more than in 2012 (300).
How old are La Trinité’s residents?
The median age is 40.6, younger than 76% of compared French towns. 26% are under 18 and 20% 65 or older.
How many second homes are there in La Trinité?
16, with occasional dwellings: 9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in La Trinité?
INSEE counts 8 immigrants (born abroad, not French at birth), 2.1% of residents, and 3 foreign nationals (0.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in La Trinité?
€28,410 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.