6% of homes are flats, below 94% of compared French towns
4.6% of households have no car; in the typical compared French town the figure is 11%. Households in social housing are rarer here than in 99% of compared French towns. At the 2023 Census, 593 people lived in Castelnau-Chalosse, in 260 households. Locally, 37% of households are headed by a retired person.
Throughout this page, the Landes 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.
Castelnau-Chalosse’s population moved ±0% on 2012, less than in 69% 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
For comparison, the median compared French town changed +5% and the median Landes town +9%. The first five years brought +2%; the six to 2023, −1%.
A median age of 47.8: Castelnau-Chalosse is older than 74% of compared French towns
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Castelnau-Chalosse 47.8. The median compared French town: 44.
Here nearly a quarter of residents are 65 or over, where the figure in the typical compared French town is 22%. On residents aged 15 to 24, 11% here is much the same as in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 93 men for every 100 women. Median share of women: Landes 51.9%, France 51.8%.
A larger share of single-parent households than 89% of compared French towns: 13%
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 Landes median and the France median
Living alone · share
Households average 2.2 people. By way of comparison, 10% of households are single parents in the typical compared French town. Few places have so few one-person households: 31% here, fewer than in 73% of compared French towns. Castelnau-Chalosse sits close to the norm on couples with children: 25%, about the same as in the typical compared French town.
Empty homes make up 9.7% in Castelnau-Chalosse, more than in 78% 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
Castelnau-Chalosse sits close to the norm on second homes: 3%, about the same as in the typical compared French town. In the typical compared French town, 6.7% of homes stand empty. Newcomers of less than two years account for 10% of households, residents of 30 years or more for 25%.
Half above, half below €24,830 a year in standard of living
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 €24,830 a year per consumption unit, lower than in 62% of compared French towns.
Castelnau-Chalosse sits below 79% of compared French towns for households headed by a manager or professional (5.8%)
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
In the typical compared French town, the share of households headed by a manual worker is 14%; Castelnau-Chalosse has 15%. Households headed by a manager or professional make up 9.4% in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
1.9% of residents are immigrants, fewer than in 93% 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.
Compared with 4.3% in the typical compared French town, 1.9% of residents are foreign nationals here. Against that, 6.5% of residents are immigrants 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.
Castelnau-Chalosse ranks below 82% of compared French towns on single residents: 22%
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
Married residents: 46%, above 70% of compared French towns. For single residents, the comparison in the typical compared French town is 25%.
Graduates of higher education make up 25% in Castelnau-Chalosse, less than in 68% 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
The share of adults with no qualification stands at 20%. The usual figure: 30% of adults out of school hold a higher-education qualification in the typical compared French town.
The 15th oldest of 41 French towns of 593 to 2,582 people
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
Older than Castelnau-Chalosse: 4 of the 6 towns nearby
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Castelnau-Chalosse | 47.8 | 24% | 3% | 1.9% |
| Pouillon 3,134 · 8.5 mi | 52.3 | 29% | 5.2% | 3% |
| Narrosse 3,387 · 8.6 mi | 49.3 | 27% | 3% | 7.6% |
| Pontonx-sur-l'Adour 3,021 · 9.8 mi | 46.9 | 25% | 4.4% | 4.1% |
| Saint-Vincent-de-Paul 3,402 · 10 mi | 47.7 | 24% | 2.8% | 5.2% |
| Dax 22,109 · 10.7 mi | 49.3 | 29% | 17% | 9.7% |
| Saint-Paul-lès-Dax 14,481 · 11.7 mi | 51.3 | 32% | 10% | 6.6% |
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-Chalosse
What is the population of Castelnau-Chalosse?
593 at INSEE’s 2023 census, about the same as in 2012 (592).
How old are Castelnau-Chalosse’s residents?
The median age is 47.8, older than 74% of compared French towns. 19% are under 18 and 24% 65 or older.
How many second homes are there in Castelnau-Chalosse?
9, with occasional dwellings: 3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Castelnau-Chalosse?
INSEE counts 11 immigrants (born abroad, not French at birth), 1.9% of residents, and 11 foreign nationals (1.9%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Castelnau-Chalosse?
€24,830 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 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.