Photo: Circhirello Eddy · CC BY-SA 3.0Couples with children: 36%, a higher share than 94% of compared French towns
The figure for households headed by a retired person is 23% in Saint-Just and 32% in the typical compared French town. This Hérault town has fewer residents aged 65 and over than 88% of compared French towns, at 16%. At the 2023 Census, 3,293 people lived locally, in 1,340 households. Here, 4.8% of households have no car.
Throughout this page, the Hérault 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-Just
A town of families
36% of households are couples with children and 13% single parents with children; 20% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A growing town: +15% since 2012, faster than 81% 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 +14% to 2017, then +1% to 2023. Medians for comparison: +5% across compared French towns, +13% in Hérault.
Half of Saint-Just is under 40.5, younger than 76% 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-Just 40.5. The median compared French town: 44.
Roughly one in ten: just over one in ten residents are 15 to 24.
Women and men · all residents
51% women, 49% men
About an even split. Median share of women: Hérault 52.0%, France 51.8%.
Fewer one-person households than 95% of compared French towns: 24%
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 Hérault median and the France median
Living alone · share
Single-parent households: 13% here and 10% in the typical compared French town. In the typical compared French town, the share of one-person households is 35%. Households average 2.5 people.
Saint-Just ranks below 90% of compared French towns on empty homes: 3.7%
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
Long tenure is the mark of 14% of households (30 years or more), short tenure of 11% (under two years). Compared with other places, households in social housing are scarce here: 7.8%, fewer than in 72% of compared French towns. As a reference point, 6.7% of homes stand empty in the typical compared French town. The share of flats trails just over four fifths of compared French towns: 13%.
Half of residents have a standard of living above €26,750 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 €26,750 a year per consumption unit: higher than in 59% of compared French towns. As for poverty, 13.0% of residents are below the line.
In Saint-Just, 11% of households are headed by a manager or professional, more than in 60% 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
The share of households headed by a manual worker stands at 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).
Saint-Just: 6.1% 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.
That is lower than in 54% of compared French towns; the median compared commune in Hérault has 6.8%. Across Saint-Just, 3.4% 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.
Married residents make up 48% in Saint-Just, more than in 83% of compared French towns
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: 22% here and 25% in the typical compared French town. Elsewhere, 43% of residents 15 and over are married in the typical compared French town.
Adults with no qualification: 16%, a lower share than 69% 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 Saint-Just comes in at 32%. Measured more widely, nearly a fifth of adults out of school have no qualification in the typical compared French town.
Of 41 French towns its size (3,255 to 3,331 people), the 6th youngest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Amfreville-la-Mi-Voie is the youngest (36.8); Carantec the oldest (60.5).
Around Saint-Just, 5 of 6 towns have a higher median age
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Saint-Just | 40.5 | 16% | 1.7% | 6.1% |
| Lunel 26,623 · 1.6 mi | 44.5 | 23% | 1.2% | 16% |
| Lunel-Viel 4,507 · 1.9 mi | 42.1 | 20% | 1.3% | 6.7% |
| Lansargues 3,233 · 2.1 mi | 43.8 | 20% | 3.6% | 6.5% |
| Marsillargues 6,988 · 2.8 mi | 43.3 | 22% | 6.7% | 7.4% |
| Mudaison 3,009 · 3.9 mi | 41.6 | 18% | 2.9% | 5.6% |
| Saint-Brès 3,623 · 4.2 mi | 39.4 | 16% | 1% | 5% |
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-Just
What is the population of Saint-Just?
3,293 at INSEE’s 2023 census, 15% more than in 2012 (2,867).
How old are Saint-Just’s residents?
The median age is 40.5, younger than 76% of compared French towns. 25% are under 18 and 16% 65 or older.
How many second homes are there in Saint-Just?
23, with occasional dwellings: 1.7% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Saint-Just?
INSEE counts 200 immigrants (born abroad, not French at birth), 6.1% of residents, and 110 foreign nationals (3.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Saint-Just?
€26,750 a year per consumption unit in 2023 (median of compared French towns €25,970); 13.0% of residents live below the poverty line. 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.