More couples with children than 99% of compared French towns: 50%
The share of residents aged 15 to 24 is 7.1%, against 11% in the typical compared French town. The 2023 Census counted 42 residents in 19 households. In Sentenac-de-Sérou, 7.4% of homes are flats. Empty homes are more common here than in 84% of compared French towns.
Throughout this page, the Ariège 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 Sentenac-de-Sérou
One home in two is a second home
The census counted 29 second homes and occasional dwellings in Sentenac-de-Sérou, 54% of its 54 homes: higher than in 98% of compared French towns. 97% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
A town of families
50% of households are couples with children and 25% single parents with children; 21% of residents are under 15. Households ↓
Growing fast
Sentenac-de-Sérou had 36 residents at the 2012 census and 42 in 2023, up 17%: faster growth than in 85% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A larger share of second homes than 98% of compared French towns: 54%
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
Households in social housing are rarer here than in 99% of compared French towns. Elsewhere, 2.1% of homes are second homes in the typical compared French town. 16% of households arrived within the last two years, while 26% have stayed 30 years or more. At 11%, households without a car sit close to the figure in the typical compared French town.
A +17% change since 2012: Sentenac-de-Sérou grew faster than 85% 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
In two steps, +44% to 2017 and −19% after, the town’s change compares with +5% for the median compared French town and +2% in Ariège.
Sentenac-de-Sérou is younger than 82% of compared French towns: a median age of 39.5
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Sentenac-de-Sérou 39.5. The median compared French town: 44.
With residents aged 65 and over at 24%, Sentenac-de-Sérou is ahead of three fifths of compared French towns on that count.
Women and men · all residents
43% women, 57% men
About 75 women for every 100 men. Median share of women: Ariège 52.2%, France 51.8%.
A higher share of single-parent households than 99% of compared French towns, at 25%
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 Ariège median and the France median
Living alone · share
Against a figure of 35% in the typical compared French town, the share of one-person households in Sentenac-de-Sérou comes in at 25%. In the typical compared French town, single-parent households come to 10%. On average, 2.2 people share a household.
More households headed by a manual worker than 96% of compared French towns: 25%
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
Set against 32% in the typical compared French town, 25% of households are headed by a retired person in Sentenac-de-Sérou. In the typical compared French town, 14% of households are headed by a manual worker. Households headed by a manager or professional are rarer here than in 99% of compared French towns.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
More foreign nationals than 91% of compared French towns: 14%
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.
That is higher than in 54% of compared French towns; the median compared commune in Ariège has 9.1%. The usual figure: 4.3% of residents are foreign nationals in the typical compared French town. The share of immigrants stands at 7.1%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Sentenac-de-Sérou: 39% of residents 15 and over are single, above 97% 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
Where 43% of residents 15 and over are married in the typical compared French town, Sentenac-de-Sérou has 36%. Single residents make up 25% in the typical compared French town.
Sentenac-de-Sérou ranks below 95% of compared French towns on adults with no qualification: 10%
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
About one in three: that is how common graduates of higher education are in Sentenac-de-Sérou (30%). The comparison figure for adults with no qualification is 19% in the typical compared French town.
41 French towns of 42 to 2,582 people: this is the 2nd 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 Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
Every neighbor is older than Sentenac-de-Sérou
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Sentenac-de-Sérou | 39.5 | 24% | 54% | 7.1% |
| Foix 9,934 · 11 mi | 46.8 | 27% | 7.6% | 15% |
| Saint-Girons 6,008 · 12.4 mi | 51.9 | 33% | 6.7% | 9.1% |
| Varilhes 3,487 · 13.2 mi | 46.7 | 26% | 3.7% | 4.1% |
| Tarascon-sur-Ariège 3,085 · 13.8 mi | 51.4 | 32% | 8% | 18% |
| Saint-Jean-du-Falga 2,851 · 14.2 mi | 50 | 30% | 1.8% | 7.6% |
| Pamiers 16,473 · 15.2 mi | 39.8 | 21% | 2.7% | 13% |
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 Sentenac-de-Sérou
What is the population of Sentenac-de-Sérou?
42 at INSEE’s 2023 census, 17% more than in 2012 (36).
How old are Sentenac-de-Sérou’s residents?
The median age is 39.5, younger than 82% of compared French towns. 24% are under 18 and 24% 65 or older.
How many second homes are there in Sentenac-de-Sérou?
29, with occasional dwellings: 54% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Sentenac-de-Sérou?
INSEE counts 3 immigrants (born abroad, not French at birth), 7.1% of residents, and 6 foreign nationals (14%). 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 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.