11% of homes in Saint-Justin are second homes
7.8% of homes are flats, against 30% in the typical compared French town. Saint-Justin is home to 1,008 residents in 470 households, by the 2023 Census. On the census count, 8.6% of residents are 15 to 24. Households in social housing are rarer here than in 99% of compared French towns.
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.
What stands out about the people of Saint-Justin
One home in nine is a second home
The census counted 64 second homes and occasional dwellings in Saint-Justin, 11% of its 600 homes: higher than in 88% of compared French towns. 96% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A higher share of empty homes than 82% of compared French towns, at 11%
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%, against 11% in the typical compared French town. Typically, 6.7% of homes stand empty in the typical compared French town.
A change of +5% since 2012 leaves Saint-Justin behind 50% 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
Here the change came as +1% to 2017, then +3% to 2023.
A median age of 49.2: Saint-Justin is older than 80% 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
■ Saint-Justin 49.2. The median compared French town: 44.
28% of residents are 65 or over; in the typical compared French town the figure is 22%.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Landes 51.9%, France 51.8%.
Saint-Justin sits above 61% of compared French towns for single-parent households (11%)
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
On average, 2.1 people share a household. For comparison, one in ten households are single parents in the typical compared French town. 24% of households are couples with children (typical compared French town: 25%).
Half of residents have a standard of living above €24,410 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.
Half of Saint-Justin’s residents live in households with a standard of living below €24,410 a year per consumption unit, and half above: lower than in 67% of compared French towns.
A larger share of households headed by a manual worker than 91% of compared French towns: 23%
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, 37% of households are headed by a retired person in Saint-Justin. The share of households headed by a manual worker in the typical compared French town is 14%. About one in 19: that is how common households headed by a manager or professional are in Saint-Justin (5.4%).
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Only 3.3% of residents are immigrants in Saint-Justin
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.
2.6% of residents are foreign nationals (typical compared French town: 4.3%). That is lower than in nearly four fifths of compared French towns; the median compared commune in Landes has 5.4%. Set beside 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.
Saint-Justin ranks below 88% of compared French towns on single residents: 21%
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
Against a figure of 43% in the typical compared French town, the share of married residents in Saint-Justin comes in at 44%. The benchmark for single residents in the typical compared French town: 25%.
Only 22% of adults out of school hold a higher-education qualification in Saint-Justin
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%. Graduates of higher education make up 30% in the typical compared French town.
The 14th oldest of 41 French towns of 1,008 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).
Every neighbor is younger than Saint-Justin
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Saint-Justin | 49.2 | 28% | 11% | 3.3% |
| Villeneuve-de-Marsan 2,508 · 7.4 mi | 48.9 | 29% | 2.7% | 4.2% |
| Mont-de-Marsan 31,592 · 14.3 mi | 42.8 | 22% | 2.9% | 9.3% |
| Saint-Pierre-du-Mont 10,092 · 15.6 mi | 44.5 | 22% | 2.2% | 10% |
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 Saint-Justin
What is the population of Saint-Justin?
1,008 at INSEE’s 2023 census, 5% more than in 2012 (962).
How old are Saint-Justin’s residents?
The median age is 49.2, older than 80% of compared French towns. 18% are under 18 and 28% 65 or older.
How many second homes are there in Saint-Justin?
64, with occasional dwellings: 11% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Saint-Justin?
INSEE counts 34 immigrants (born abroad, not French at birth), 3.3% of residents, and 26 foreign nationals (2.6%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Saint-Justin?
€24,410 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.