Photo: Pachypodium · CC BY 3.04.4% of homes are flats, below 97% of compared French towns
Households without a car are rarer here than in 92% of compared French towns. The 2023 Census put Treize-Septiers’s population at 3,416, in 1,390 households. The share of households headed by a manual worker stands at 22%. The figure for one-person households is 28% in Treize-Septiers and 35% in the typical compared French town.
Throughout this page, the Vendée 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.
Faster growth than 78% of compared French towns: Treize-Septiers changed by +13% since 2012
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 Vendée town changed +9% and the median compared French town +5%; here the first five years brought +7% and the next six +6%.
A lower share of residents aged 65 and over than 75% of compared French towns, at 18%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Treize-Septiers 41.6. The median compared French town: 44.
With a median age of 41.6, Treize-Septiers is younger than 69% of compared French towns. Residents aged 15 to 24: 11% of the total. Across the comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Vendée 50.9%, France 51.8%.
Treize-Septiers: 33% of households are couples with children, above 87% 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 Vendée median and the France median
Living alone · share
Each household has 2.4 people on average. On single-parent households, Treize-Septiers sits lower than 81% of compared French towns: 7.9%. In the typical compared French town, the share of couples with children is 25%.
Below 93% of compared French towns: 3.3% 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
18% of households have been in place 30 years or more; 9.3% moved in within the last two years. Empty homes make up 6.7% in the typical compared French town. Fewer households in social housing than in 81% of compared French towns: 6.1%. Compared with 2.1% in the typical compared French town, 0.3% of homes are second homes here.
At the median, €25,840 a year to live on
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 €25,840 a year per consumption unit and half below; the level is lower than in 51% of compared French towns. As for poverty, 6.0% of residents are below the line.
Below 74% of compared French towns: 28% of households are headed by a retired person
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
Nearly one in ten households are headed by a manager or professional in the typical compared French town, against 12% in Treize-Septiers. For households headed by a retired person, the comparison in the typical compared French town is 32%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
2.7% of residents are immigrants, fewer than in 85% 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 median compared commune in Vendée has 2.1%; immigrants here make up a share lower than in 85% of compared French towns. Against that, 6.5% of residents are immigrants in the typical compared French town. The share of foreign nationals stands at 1.8%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
In Treize-Septiers, 46% of residents 15 and over are married, more than in 73% 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
The figure for single residents is 23% in Treize-Septiers and 25% in the typical compared French town. On average, 43% of residents 15 and over are married in the typical compared French town.
Only 15% of adults out of school have no qualification in Treize-Septiers
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
In the typical compared French town, the share of graduates of higher education is 30%; Treize-Septiers has 27%. The share of adults with no qualification in the typical compared French town is 19%.
Among 41 French towns of 3,388 to 3,444 people, the 12th 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.
At the ends of the range sit Moult-Chicheboville (35.9), the youngest, and Sainte-Marie-de-Ré (58.5), the oldest.
5 in 6 nearby towns have a higher median age than Treize-Septiers
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Treize-Septiers | 41.6 | 18% | 0.3% | 2.7% |
| La Bruffière 3,987 · 2.3 mi | 41.8 | 19% | 1.5% | 1.5% |
| Montaigu-Vendée 21,134 · 3.9 mi | 41.9 | 18% | 1.3% | 2.8% |
| Boussay 2,884 · 4.6 mi | 44.4 | 19% | 1.9% | 1.7% |
| Cugand-la-Bernardière 5,711 · 4.9 mi | 42.8 | 20% | 2.5% | 1.7% |
| Les Landes-Genusson 2,638 · 5.5 mi | 40.6 | 21% | 1.7% | 2.2% |
| Gétigné 3,883 · 6 mi | 43.3 | 20% | 2.6% | 2.1% |
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 Treize-Septiers
What is the population of Treize-Septiers?
3,416 at INSEE’s 2023 census, 13% more than in 2012 (3,010).
How old are Treize-Septiers’ residents?
The median age is 41.6, younger than 69% of compared French towns. 24% are under 18 and 18% 65 or older.
How many second homes are there in Treize-Septiers?
5, with occasional dwellings: 0.3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Treize-Septiers?
INSEE counts 93 immigrants (born abroad, not French at birth), 2.7% of residents, and 63 foreign nationals (1.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Treize-Septiers?
€25,840 a year per consumption unit in 2023 (median of compared French towns €25,970); 6.0% 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 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.