Half of La Bastide-de-Sérou is over 52.7, older than 90% of compared French towns
Here 15% of households are couples with children, where the figure in the typical compared French town is 25%. La Bastide-de-Sérou counted 965 residents and 460 households at the 2023 Census. On the census count, 40% of households are headed by a retired person. Fewer households in social housing than in 79% of compared French towns: 6.6%.
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 La Bastide-de-Sérou
One home in seven is a second home
The census counted 90 second homes and occasional dwellings in La Bastide-de-Sérou, 14% of its 630 homes: higher than in 91% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
An older town
Half of La Bastide-de-Sérou’s residents are under 52.7 and half over; the median of compared French towns is 44. 32% are 65 or older (France median 22%), 13% 80 or older. Ages ↓
Empty homes
The census found 86 homes empty (14%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Second homes make up 14% in La Bastide-de-Sérou, more than in 91% 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
The share of flats trails 74% of compared French towns: 16%. As a yardstick, 2.1% of homes are second homes in the typical compared French town. Across La Bastide-de-Sérou, 13% of households have no car. On empty homes, La Bastide-de-Sérou sits higher than 93% of compared French towns: 14%.
Slower growth than 66% of compared French towns: La Bastide-de-Sérou changed by +1% 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
Over those years, the median Ariège town changed +2% and the median compared French town +5%. Between 2012 and 2017 the population moved ±0%, then +1% to 2023.
Fewer residents aged 15 to 24 than 97% of compared French towns: 7%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ La Bastide-de-Sérou 52.7. The median compared French town: 44.
The share of residents aged 65 and over tops 89% of compared French towns: 32%. On average, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Median share of women: Ariège 52.2%, France 51.8%. Women live longer than men, so towns with many older residents have more women.
One-person households make up 42% in La Bastide-de-Sérou, more than in 75% 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 Ariège median and the France median
Living alone · share
The average household has 1.9 people. Against that, just over a third of households are one person living alone in the typical compared French town. 12% of households are single parents, more than in 75% of compared French towns.
A median of €20,680 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.
Per consumption unit, half of residents live on more than €20,680 a year: lower than in 95% of compared French towns.
La Bastide-de-Sérou sits below 78% of compared French towns for households headed by a manual worker (9.8%)
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
Households headed by a manager or professional are more common here than in 52% of compared French towns. Set beside that, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
La Bastide-de-Sérou: 5.7% of residents 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.
The median compared commune in Ariège has 9.1%; immigrants here make up a share lower than in 57% of compared French towns. Put another way, about one in 18: 5.7% of residents are immigrants. Foreign nationals are about as common here as in the typical compared French town: 3.6%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Below 93% of compared French towns: 33% of residents 15 and over are married
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
Here 30% of residents 15 and over are single, where the figure in the typical compared French town is 25%. Married residents make up 43% in the typical compared French town.
Adults with no qualification: 21%, a higher share than 60% 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
Against a figure of 30% in the typical compared French town, the share of graduates of higher education in La Bastide-de-Sérou comes in at 28%. In the typical compared French town, nearly a fifth of adults out of school have no qualification.
Of 41 French towns its size (965 to 2,582 people), the 8th 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
La Bastide-de-Sérou is older than every town around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| La Bastide-de-Sérou | 52.7 | 32% | 14% | 5.7% |
| Foix 9,934 · 10 mi | 46.8 | 27% | 7.6% | 15% |
| Varilhes 3,487 · 10.7 mi | 46.7 | 26% | 3.7% | 4.1% |
| Saint-Jean-du-Falga 2,851 · 11.3 mi | 50 | 30% | 1.8% | 7.6% |
| Pamiers 16,473 · 12 mi | 39.8 | 21% | 2.7% | 13% |
| La Tour-du-Crieu 3,230 · 13.2 mi | 44.8 | 23% | 1.3% | 6.3% |
| Saint-Girons 6,008 · 14.3 mi | 51.9 | 33% | 6.7% | 9.1% |
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 Bastide-de-Sérou
What is the population of La Bastide-de-Sérou?
965 at INSEE’s 2023 census, about the same as in 2012 (957).
How old are La Bastide-de-Sérou’s residents?
The median age is 52.7, older than 90% of compared French towns. 16% are under 18 and 32% 65 or older.
How many second homes are there in La Bastide-de-Sérou?
90, with occasional dwellings: 14% of all homes, against 2.1% for the median compared French town.
How many immigrants live in La Bastide-de-Sérou?
INSEE counts 55 immigrants (born abroad, not French at birth), 5.7% of residents, and 34 foreign nationals (3.6%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in La Bastide-de-Sérou?
€20,680 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 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.