Households headed by a manager or professional: 15%, a higher share than 78% of compared French towns
By its share of households in social housing (6.9%), Trets is below 77% of compared French towns. For Trets, the census puts one-person households at 33%. Half are older than 44.5, older than 53% of compared French towns. This Bouches-du-Rhône town counted 10,946 residents and 4,920 households at the 2023 Census.
Throughout this page, the Bouches-du-Rhône 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.
Trets grew +5% from 2012 to 2023, ahead of 52% 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 years 2012 to 2017 brought +2%; 2017 to 2023, +3%.
A smaller share of residents aged 15 to 24 than 73% of compared French towns: 9.5%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Trets 44.5. The median compared French town: 44.
Half of Trets’s residents are over 44.5, older than in 53% of compared French towns. Across the comparison, 11% of residents are 15 to 24 in the typical compared French town. Here, 22% of residents are 65 or over.
Women and men · all residents
53% women, 47% men
About 90 men for every 100 women. Median share of women: Bouches-du-Rhône 51.9%, France 51.8%.
Trets sits above 58% of compared French towns for single-parent households (11%)
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 Bouches-du-Rhône median and the France median
Living alone · share
Households here average 2.2 people each. Single-parent households: 10% in the typical compared French town, for comparison. Here 26% of households are couples with children, where the figure in the typical compared French town is 25%.
A higher share of flats than 55% of compared French towns, at 33%
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
11% of households have no car in the typical compared French town, against 9.5% in Trets. In the last two years, 13% of households moved in; at the other end, 17% have stayed 30 years or more. Compared with other places, empty homes are scarce here: 5.8%, fewer than in 62% of compared French towns.
A median standard of living of €28,330 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 €28,330 a year per consumption unit, higher than in 73% of compared French towns. One measure of hardship: 11.0% of residents are below the poverty line.
In Trets, 30% of households are headed by a retired person, fewer than in 62% 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
13% of households are headed by a manual worker. In the typical compared French town, the share of households headed by a retired person is 32%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
7.1% of residents in Trets are immigrants
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.
Immigrants make up about one in 14 here (7.1%). That is higher than in 54% of compared French towns; the median compared commune in Bouches-du-Rhône has 6.3%. Trets sits close to the norm on foreign nationals: 4.4%, about the same as 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.
Trets ranks below 70% of compared French towns on single residents: 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
44% of residents 15 and over are married. In the typical compared French town, single residents come to 25%.
Trets ranks above 71% of compared French towns on graduates of higher education: 37%
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
For Trets, the census puts adults with no qualification at 19%. Measured more widely, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
41 French towns of 10,759 to 11,139 people: this is the 18th oldest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Chanteloup-les-Vignes is the youngest (33.7); Arcachon the oldest (67.4).
2 in 6 nearby towns have a higher median age than Trets
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Trets | 44.5 | 22% | 2.7% | 7.1% |
| Peynier 3,739 · 2.6 mi | 44.4 | 21% | 3.5% | 3.7% |
| Rousset 5,425 · 4 mi | 41.6 | 19% | 7.9% | 7.4% |
| Saint-Zacharie 5,879 · 4.3 mi | 46.5 | 24% | 4.4% | 3.6% |
| Pourrières 5,642 · 4.8 mi | 44.2 | 18% | 3.5% | 3.7% |
| La Bouilladisse 6,547 · 5.4 mi | 46.1 | 23% | 3.2% | 3.1% |
| Auriol 13,037 · 5.6 mi | 44.5 | 21% | 4.2% | 4.8% |
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 Trets
What is the population of Trets?
10,946 at INSEE’s 2023 census, 5% more than in 2012 (10,383).
How old are Trets’ residents?
The median age is 44.5, older than 53% of compared French towns. 20% are under 18 and 22% 65 or older.
How many second homes are there in Trets?
150, with occasional dwellings: 2.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Trets?
INSEE counts 770 immigrants (born abroad, not French at birth), 7.1% of residents, and 480 foreign nationals (4.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Trets?
€28,330 a year per consumption unit in 2023 (median of compared French towns €25,970); 11.0% of residents live below the poverty line. 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.