Lainsecq is older than 94% of compared French towns: a median age of 54.8
In the typical compared French town, the share of households without a car is 11%; Lainsecq has 2.7%. There were 140 households here at the 2023 Census, home to 328 residents. Here, 1.4% of households rent social housing (HLM). Compared with other places, single-parent households are scarce here: 6.9%, fewer than in 91% of compared French towns.
Throughout this page, the Yonne 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 Lainsecq
One home in three is a second home
The census counted 78 second homes and occasional dwellings in Lainsecq, 30% of its 260 homes: higher than in 95% of compared French towns. 93% 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 Lainsecq’s residents are under 54.8 and half over; the median of compared French towns is 44. 35% are 65 or older (France median 22%), 12% 80 or older. Ages ↓
Fewer residents than in 2012
Lainsecq had 352 residents at the 2012 census and 328 in 2023, down 7%: slower growth than in 93% of compared French towns. Population ↓
Empty homes
The census found 37 homes empty (15%): for sale, to let, awaiting work or simply unused. Homes & cars ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
More second homes than 95% of compared French towns: 30%
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
Nearly one in ten households arrived within the last two years, while 32% have stayed 30 years or more. At 15%, the share of empty homes is higher than in 95% of compared French towns. The wider picture: 2.1% of homes are second homes in the typical compared French town.
Since 2012, Lainsecq has changed by −7%, slower than 93% 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
Over the whole period the median compared French town changed +5%, and the median Yonne town −4%.
More residents aged 65 and over than 94% of compared French towns: 35%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Lainsecq 54.8. The median compared French town: 44.
Nearly one in ten residents are 15 to 24 (typical compared French town: 11%). Across the comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
51% women, 49% men
About 95 men for every 100 women. Median share of women: Yonne 52.2%, France 51.8%.
A larger share of one-person households than 80% of compared French towns: 43%
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 Yonne median and the France median
Living alone · share
A household here holds 2 people on average. Typically, just over a third of households are one person living alone in the typical compared French town. 26% of households are couples with children, more than in 51% of compared French towns.
A median standard of living of €23,360 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 residents live in households above €23,360 a year per consumption unit and half below; the level is lower than in 78% of compared French towns.
17% of households are headed by a manager or professional, more than in 83% 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
32% of households are headed by a retired person in the typical compared French town, against 34% in Lainsecq. The share of households headed by a manager or professional in the typical compared French town is 9.4%. For Lainsecq, the census puts households headed by a manual worker at 14%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
3.3% of residents are immigrants, below 79% of compared French towns
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 Yonne has 9.2%; immigrants here make up a share lower than in nearly four fifths of compared French towns. In the typical compared French town, 6.5% of residents are immigrants. 2.1% of residents are foreign nationals, or about one in 48.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
A smaller share of married residents than 93% of compared French towns: 34%
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
Where a quarter of residents 15 and over are single in the typical compared French town, Lainsecq has 29%. The benchmark for married residents in the typical compared French town: 43%.
A higher share of adults with no qualification than 72% of compared French towns, at 24%
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
Graduates of higher education make up 33%, against 30% in the typical compared French town. Set beside that, 19% of adults out of school have no qualification in the typical compared French town.
7th highest median age among 41 French towns of 328 to 2,582
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.
Lainsecq is older than every town around it
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 Lainsecq
What is the population of Lainsecq?
328 at INSEE’s 2023 census, 7% fewer than in 2012 (352).
How old are Lainsecq’s residents?
The median age is 54.8, older than 94% of compared French towns. 15% are under 18 and 35% 65 or older.
How many second homes are there in Lainsecq?
78, with occasional dwellings: 30% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Lainsecq?
INSEE counts 11 immigrants (born abroad, not French at birth), 3.3% of residents, and 7 foreign nationals (2.1%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Lainsecq?
€23,360 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 October 30, 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.