Castelner sits below 97% of compared French towns for households headed by a retired person (18%)
Flats are rarer here than in 99% of compared French towns. The share of single-parent households stands at 27%. The 2023 Census put Castelner’s population at 120, in 56 households. Residents aged 15 to 24 make up 8.4%, against 11% in the typical compared French town.
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.
Castelner’s population changed by +9% since 2012, more than in 67% 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
From 2012 to 2017 the population moved −3%, and from 2017 to 2023 +12%; the median compared French town changed +5% and the median Landes town +9%.
Older than 82% of compared French towns: half of Castelner is over 49.6
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Castelner 49.6. The median compared French town: 44.
Set against 22% in the typical compared French town, 26% of residents are 65 or over in Castelner.
Women and men · all residents
45% women, 55% men
About 80 women for every 100 men. Median share of women: Landes 51.9%, France 51.8%.
Couples with children: 27%, a higher share than 61% 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 Landes median and the France median
Living alone · share
Average household size: 2.1 people. In the typical compared French town, couples with children come to 25%. 36% of households are one person living alone, more than in 55% of compared French towns.
More second homes than 81% of compared French towns: 6.2%
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. The census found that 7.1% of households have no car in Castelner.
Median living standard: €24,270 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.
Living standards centre on €24,270 a year per consumption unit: lower than in 68% of compared French towns.
Households headed by a manual worker make up 27% in Castelner, more than in 99% of compared French towns
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
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Only 0.8% of residents are foreign nationals in Castelner
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.
With immigrants at 3.4%, Castelner is behind 79% of compared French towns on that count. In the typical compared French town, 4.3% of residents are foreign nationals.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Fewer married residents than 66% of compared French towns: 41%
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
Single residents make up 24%, against 25% in the typical compared French town. As a yardstick, 43% of residents 15 and over are married in the typical compared French town.
Graduates of higher education make up 21% in Castelner, less than in 82% 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
On the census count, 20% of adults out of school have no qualification. Measured more widely, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
41 French towns of 120 to 2,582 people: this is the 14th 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.
At the ends of the range sit Villejust (37.2), the youngest, and Prayssac (62.3), the oldest.
Castelner and its 6 nearest towns: 3 of them are older
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
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 Castelner
What is the population of Castelner?
120 at INSEE’s 2023 census, 9% more than in 2012 (110).
How old are Castelner’s residents?
The median age is 49.6, older than 82% of compared French towns. 19% are under 18 and 26% 65 or older.
How many second homes are there in Castelner?
4, with occasional dwellings: 6.2% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Castelner?
INSEE counts 4 immigrants (born abroad, not French at birth), 3.4% of residents, and 1 foreign nationals (0.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Castelner?
€24,270 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.