Seix is older than 94% of compared French towns: a median age of 55
The share of flats trails 85% of compared French towns: 11%. Seix counted 762 residents and 390 households at the 2023 Census. Couples with children account for 14%. 3.9% of households are headed by a manager or professional, fewer than in 93% 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 Seix
One home in two is a second home
The census counted 500 second homes and occasional dwellings in Seix, 53% of its 950 homes: higher than in 98% of compared French towns. 97% 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 Seix’s residents are under 55 and half over; the median of compared French towns is 44. 36% are 65 or older (France median 22%), 13% 80 or older. Ages ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
53% of homes are second homes, a share 98% of compared French towns don’t reach
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 figure for households without a car is 14% in Seix and 11% in the typical compared French town. As a reference point, 2.1% of homes are second homes in the typical compared French town. About one in 19: that is how common households in social housing are in Seix (5.4%). On empty homes, Seix sits lower than 52% of compared French towns: 6.5%.
+1% since 2012, a pace below 66% 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
The change was −7% from 2012 to 2017 and +9% from 2017 to 2023. The median compared French town changed +5% over the same years, the median Ariège town +2%.
Seix sits below 99% of compared French towns for residents aged 15 to 24 (5.1%)
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Seix 55. The median compared French town: 44.
The share of residents aged 65 and over is 36%, against 22% in the typical compared French town. Set beside that, 11% of residents are 15 to 24 in the typical compared French town.
Women and men · all residents
50% women, 50% men
About an even split. Median share of women: Ariège 52.2%, France 51.8%.
One-person households make up 45% in Seix, more than in 85% 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 Ariège median and the France median
Living alone · share
Seix sits close to the norm on single-parent households: 9.1%, about the same as in the typical compared French town. One-person households: 35% in the typical compared French town, for comparison. The average household has 1.9 people.
Median standard of living: €21,410 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.
Per consumption unit, half of residents live on more than €21,410 a year: lower than in 92% of compared French towns.
A higher share of households headed by a retired person than 90% of compared French towns, at 43%
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
Here 6.5% of households are headed by a manual worker, where the figure in the typical compared French town is 14%. The share of households headed by a retired person in the typical compared French town is 32%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
5.6% of residents in Seix 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.
The median compared commune in Ariège has 9.1%; immigrants here make up a share lower than in 58% of compared French towns. Immigrants make up about one in 18 here (5.6%). Foreign nationals: 3.5%, near enough the figure 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.
Seix sits below 70% of compared French towns for married residents (40%)
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 28%, against 25% in the typical compared French town. Married residents: 43% in the typical compared French town, for comparison.
Seix: 34% of adults out of school hold a higher-education qualification, above 65% 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
By its share of adults with no qualification (17%), Seix is below 63% of compared French towns. Graduates of higher education make up 30% in the typical compared French town.
The 6th oldest of 41 French towns of 762 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.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
Seix and the towns around it
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Seix | 55 | 36% | 53% | 5.6% |
| Saint-Girons 6,008 · 8.8 mi | 51.9 | 33% | 6.7% | 9.1% |
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 Seix
What is the population of Seix?
762 at INSEE’s 2023 census, about the same as in 2012 (755).
How old are Seix’s residents?
The median age is 55, older than 94% of compared French towns. 15% are under 18 and 36% 65 or older.
How many second homes are there in Seix?
500, with occasional dwellings: 53% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Seix?
INSEE counts 43 immigrants (born abroad, not French at birth), 5.6% of residents, and 27 foreign nationals (3.5%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Seix?
€21,410 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 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.