Fewer couples with children than 96% of compared French towns: 13%
11% of residents are 15 to 24 in the typical compared French town, against 4.6% in Castelnau-Durban. This Ariège town counted 458 residents and 250 households at the 2023 Census. Here, 43% of households are headed by a retired person. Households in social housing are rarer here than in 99% 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 Castelnau-Durban
One home in four is a second home
The census counted 88 second homes and occasional dwellings in Castelnau-Durban, 25% of its 350 homes: higher than in 94% 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 Castelnau-Durban’s residents are under 52.9 and half over; the median of compared French towns is 44. 28% are 65 or older (France median 22%), 6.5% 80 or older. Ages ↓
Many people living alone
48% of Castelnau-Durban’s households are one person: higher than in 90% of compared French towns; 47% of residents 65 and over live alone. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Castelnau-Durban: 25% of homes are second homes, above 94% 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 households without a car is 6.9%, against 11% in the typical compared French town. The wider picture: 2.1% of homes are second homes in the typical compared French town. Flats account for 8.3%. 5.2% of homes stand empty, fewer than in 72% of compared French towns.
Slower growth than 51% of compared French towns: Castelnau-Durban changed by +5% 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 Ariège town changed +2% and the median compared French town +5%; here the first five years brought +3% and the next six +2%.
Castelnau-Durban is older than 91% of compared French towns: a median age of 52.9
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Castelnau-Durban 52.9. The median compared French town: 44.
Residents aged 65 and over: 28% here and 22% in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 92 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.
A lower share of single-parent households than 96% of compared French towns, at 6%
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
48% of households are one person living alone (typical compared French town: 35%). Across the comparison, one in ten households are single parents in the typical compared French town. The average household has 1.8 people.
Standard of living at the median: €21,160 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 €21,160 a year per consumption unit, lower than in 93% of compared French towns.
Only 7.9% of households are headed by a manual worker in Castelnau-Durban
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
5.9% of households are headed by a manager or professional (typical compared French town: 9.4%). Elsewhere, 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).
9.3% of residents are immigrants, more than in 67% 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.
6.8% of residents are foreign nationals (typical compared French town: 4.3%). Immigrants make up 6.5% in the typical compared French town. The median compared commune in Ariège has 9.1%; immigrants here make up a share higher than in 67% of compared French towns.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Only 34% of residents 15 and over are married in Castelnau-Durban
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, a quarter of residents 15 and over are single; in Castelnau-Durban, 31%. The benchmark for married residents in the typical compared French town: 43%.
Only 12% of adults out of school have no qualification in Castelnau-Durban
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, 30% of adults out of school hold a higher-education qualification; in Castelnau-Durban, 38%. Against that, 19% of adults out of school have no qualification in the typical compared French town.
Of 41 French towns its size (458 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.
No nearby town is as old as Castelnau-Durban
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Castelnau-Durban | 52.9 | 28% | 25% | 9.3% |
| Saint-Girons 6,008 · 9.8 mi | 51.9 | 33% | 6.7% | 9.1% |
| Foix 9,934 · 13.9 mi | 46.8 | 27% | 7.6% | 15% |
| Varilhes 3,487 · 15.3 mi | 46.7 | 26% | 3.7% | 4.1% |
| Montesquieu-Volvestre 3,050 · 15.6 mi | 51.1 | 28% | 6.5% | 5.1% |
| Saint-Jean-du-Falga 2,851 · 15.8 mi | 50 | 30% | 1.8% | 7.6% |
| Pamiers 16,473 · 16.4 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 Castelnau-Durban
What is the population of Castelnau-Durban?
458 at INSEE’s 2023 census, 5% more than in 2012 (438).
How old are Castelnau-Durban’s residents?
The median age is 52.9, older than 91% of compared French towns. 17% are under 18 and 28% 65 or older.
How many second homes are there in Castelnau-Durban?
88, with occasional dwellings: 25% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Castelnau-Durban?
INSEE counts 43 immigrants (born abroad, not French at birth), 9.3% of residents, and 31 foreign nationals (6.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Castelnau-Durban?
€21,160 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 8, 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.