11% of households are couples with children, fewer than in 99% of compared French towns
3.2% of homes stand empty; in the typical compared French town the figure is 6.7%. There were 44 households in Seich at the 2023 Census, home to 89 residents. In Seich, 1.5% of homes are flats. Few places have as many households headed by a manager or professional: 22% here, more than in 91% of compared French towns.
Throughout this page, the Hautes-Pyrénées 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 Seich
One home in three is a second home
The census counted 21 second homes and occasional dwellings in Seich, 32% of its 67 homes: higher than in 95% of compared French towns. 100% of them are houses. Their owners live elsewhere, so they aren’t in the population figures on this page. Homes & cars ↓
Growing fast
Seich had 71 residents at the 2012 census and 89 in 2023, up 25%: faster growth than in 94% of compared French towns. Population ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
32% of homes are second homes, a share 95% 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
Households in social housing are rarer here than in 99% of compared French towns. By way of comparison, 2.1% of homes are second homes in the typical compared French town. Of all households, 6.7% moved in during the last two years and 22% have stayed three decades or more.
Growth of +25% since 2012 puts Seich ahead of 94% 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
In Seich, 7.6% of residents are 15 to 24, fewer than in 95% 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
■ Seich 47. The median compared French town: 44.
The share of residents aged 65 and over is 25%, against 22% in the typical compared French town. The wider picture: 11% of residents are 15 to 24 in the typical compared French town. The median age in Seich is 47, higher than in 69% of compared French towns.
Women and men · all residents
47% women, 53% men
About 114 men for every 100 women. Median share of women: Hautes-Pyrénées 53.4%, France 51.8%.
In Seich, 44% of households are one person living alone, more than in 82% 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 Hautes-Pyrénées median and the France median
Living alone · share
Just over one in ten households are single parents (typical compared French town: 10%). The comparison figure for one-person households is 35% in the typical compared French town. Households average 2 people.
In Seich, 33% of households are headed by a retired person, more than in 55% 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
Households headed by a manual worker are rarer here than in 99% of compared French towns. As a yardstick, nearly a third of households are headed by a retired person in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Seich sits above 67% of compared French towns for foreign nationals (6.5%)
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.
Immigrants make up a share higher than in 64% of compared French towns; the median compared commune in Hautes-Pyrénées has 7.4%. The share of foreign nationals in the typical compared French town is 4.3%. For Seich, the census puts immigrants at 8.7%.
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 36% in Seich, less than in 88% 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
Here, 25% of residents 15 and over are single. Married residents: 43% in the typical compared French town, for comparison.
Seich sits below 77% of compared French towns for adults with no qualification (14%)
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
With graduates of higher education at 34%, Seich is ahead of 64% of compared French towns on that count. To put it in context, nearly a fifth of adults out of school have no qualification in the typical compared French town.
41 French towns of 89 to 2,582 people: this is the 15th 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.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
Every neighbor is older than Seich
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Seich | 47 | 25% | 32% | 8.7% |
| Montréjeau 2,648 · 6.4 mi | 53.9 | 35% | 4% | 8.1% |
| Lannemezan 5,811 · 9.2 mi | 51.8 | 30% | 3.2% | 10% |
| Saint-Gaudens 12,139 · 13.7 mi | 50.1 | 31% | 2.3% | 11% |
| Bagnères-de-Bigorre 7,114 · 17.6 mi | 56 | 37% | 43% | 7.5% |
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 Seich
What is the population of Seich?
89 at INSEE’s 2023 census, 25% more than in 2012 (71).
How old are Seich’s residents?
The median age is 47, older than 69% of compared French towns. 24% are under 18 and 25% 65 or older.
How many second homes are there in Seich?
21, with occasional dwellings: 32% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Seich?
INSEE counts 8 immigrants (born abroad, not French at birth), 8.7% of residents, and 6 foreign nationals (6.5%). The medians of compared French towns are 6.5% and 4.3%.
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.