Photo: Thérèse Gaigé · CC0A larger share of empty homes than 97% of compared French towns: 16%
In La Trinité, 23% of households are single parents, beside 10% in the typical compared French town. Its 5,410 households held 11,454 residents at the 2023 Census. Second homes account for 7.8%. Households without a car are more common here than in 94% of compared French towns.
Throughout this page, the Martinique 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
Fewer residents than in 2012
La Trinité had 13,352 residents at the 2012 census and 11,454 in 2023, down 14%: slower growth than in 99% of compared French towns. Population ↓
Empty homes
The census found 1,150 homes empty (16%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
−14% since 2012, a pace below 99% 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 first five years brought −8%; the six to 2023, −6%. For comparison, the median compared French town changed +5% and the median Martinique town ±0%.
Half of La Trinité is over 49.9, older than 83% 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
■ La Trinité 49.9. The median compared French town: 44.
By its share of residents aged 65 and over (25%), La Trinité is above just over two thirds of compared French towns. Here, just over one in ten residents are 15 to 24.
Women and men · all residents
57% women, 43% men
About 76 men for every 100 women. Median share of women: France 51.8%.
15% of households are couples with children, below 91% 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 Martinique median and the France median
Living alone · share
35% of households are one person living alone in the typical compared French town, against 41% in La Trinité. Typically, 25% of households are couples with children in the typical compared French town. Average household size: 2.1 people.
La Trinité sits above 80% of compared French towns for households in social housing (21%)
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
One household in four has no car (median compared French town: 11%). For La Trinité, the census puts flats at 38%. Against that, just over one in ten households rent social housing (HLM) in the typical compared French town.
A smaller share of households headed by a manual worker than 79% of compared French towns: 9.5%
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
On the census count, 8.3% of households are headed by a manager or professional. La Trinité sits close to the norm on households headed by a retired person: 32%, about the same as in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Only 1.4% of residents are immigrants in La Trinité
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.
With foreign nationals at 1%, La Trinité is behind 94% of compared French towns on that count. That is lower than in 97% of compared French towns. Immigrants: 6.5% in the typical compared French town, for comparison.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
La Trinité ranks above 99% of compared French towns on single residents: 49%
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%; La Trinité has 29%. Across the comparison, a quarter of residents 15 and over are single in the typical compared French town.
Adults with no qualification make up 28% in La Trinité, more than in 86% 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
Set against 30% in the typical compared French town, 28% of adults out of school hold a higher-education qualification in La Trinité. On average, nearly a fifth of adults out of school have no qualification in the typical compared French town.
5th highest median age among 41 French towns of 11,271 to 11,647
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Épinay-sous-Sénart is the youngest (33.8); Villefranche-de-Rouergue the oldest (52.7).
Median age: 4 of the 6 towns around La Trinité are older
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 | 49.9 | 25% | 7.8% | 1.4% |
| Gros-Morne 9,610 · 4.1 mi | 53.1 | 29% | 2.5% | 1.3% |
| Le Robert 21,553 · 4.3 mi | 47.1 | 22% | 9% | 1.4% |
| Sainte-Marie 14,756 · 4.4 mi | 52.7 | 27% | 2.1% | 1.1% |
| Saint-Joseph 16,258 · 7.3 mi | 49.9 | 25% | 1.5% | 1.5% |
| Le Marigot 2,948 · 7.4 mi | 54.2 | 28% | 3.9% | 0.8% |
| Le Lamentin 39,400 · 8.2 mi | 44.6 | 19% | 1.6% | 3.1% |
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?
11,454 at INSEE’s 2023 census, 14% fewer than in 2012 (13,352).
How old are La Trinité’s residents?
The median age is 49.9, older than 83% of compared French towns. 20% are under 18 and 25% 65 or older.
How many second homes are there in La Trinité?
560, with occasional dwellings: 7.8% of all homes, against 2.1% for the median compared French town.
How many immigrants live in La Trinité?
INSEE counts 160 immigrants (born abroad, not French at birth), 1.4% of residents, and 110 foreign nationals (1%). 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 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.