A median age of 55.5: Lassay-les-Châteaux is older than 95% of compared French towns
In Lassay-les-Châteaux, 4.5% of homes are flats, beside 30% in the typical compared French town. Census day 2023: 2,247 residents and 1,010 households here. Single-parent households account for 6.5%. Few places have so few households in social housing: 6.6% here, fewer than in nearly four fifths of compared French towns.
Throughout this page, the Mayenne 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 Lassay-les-Châteaux
One home in eight is a second home
The census counted 170 second homes and occasional dwellings in Lassay-les-Châteaux, 12% of its 1,390 homes: higher than in 90% 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 Lassay-les-Châteaux’s residents are under 55.5 and half over; the median of compared French towns is 44. 33% are 65 or older (France median 22%), 13% 80 or older. Ages ↓
Fewer residents than in 2012
Lassay-les-Châteaux had 2,390 residents at the 2012 census and 2,247 in 2023, down 6%: slower growth than in 91% of compared French towns. Population ↓
Empty homes
The census found 200 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.
Empty homes make up 15% in Lassay-les-Châteaux, more than in 95% of compared French towns
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
One household in 14 has no car (median compared French town: 11%). Second homes make up about one in eight here (12%). Lower than in 71% of compared French towns: 7.2% of households have no car. The usual figure: 6.7% of homes stand empty in the typical compared French town.
A −6% change since 2012: slower than 91% 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
For comparison, the median compared French town changed +5% and the median Mayenne town ±0%.
Lassay-les-Châteaux sits above 92% of compared French towns for residents aged 65 and over (33%)
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Lassay-les-Châteaux 55.5. The median compared French town: 44.
Against a figure of 11% in the typical compared French town, the share of residents aged 15 to 24 in Lassay-les-Châteaux comes in at 8.5%. By way of comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
51% women, 49% men
About 96 men for every 100 women. Median share of women: Mayenne 52.1%, France 51.8%.
In Lassay-les-Châteaux, 39% of households are one person living alone, more than in 67% 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 Mayenne median and the France median
Living alone · share
A quarter of households are couples with children in the typical compared French town, against 22% in Lassay-les-Châteaux. On average, just over a third of households are one person living alone in the typical compared French town. Average household size: 2 people.
A median standard of living of €25,190 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.
The median standard of living in Lassay-les-Châteaux is €25,190 a year per consumption unit: lower than in 58% of compared French towns. Under the poverty line sit 12.0% of residents.
Above 87% of compared French towns: 41% of households are headed by a retired person
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
15% of households are headed by a manual worker, against 14% in the typical compared French town. The wider picture: 32% of households are headed by a retired person in the typical compared French town. The share of households headed by a manager or professional stands at 6%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants: 4.9%, a lower share than 65% 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 share of foreign nationals stands at 4%. For immigrants, the comparison in the typical compared French town is 6.5%.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Lassay-les-Châteaux ranks below 86% 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
In the typical compared French town, 43% of residents 15 and over are married; in Lassay-les-Châteaux, 48%. The comparison figure for single residents is 25% in the typical compared French town.
A smaller share of graduates of higher education than 85% of compared French towns: 20%
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
27% of adults out of school have no qualification, against 19% in the typical compared French town. Typically, 30% of adults out of school hold a higher-education qualification in the typical compared French town.
41 French towns of 2,247 to 2,582 people: this is the 5th 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).
Of the 6 towns nearest Lassay-les-Châteaux, 2 are older
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Lassay-les-Châteaux | 55.5 | 33% | 12% | 4.9% |
| Ambrières-les-Vallées 2,619 · 6.4 mi | 49.6 | 30% | 7.5% | 3.1% |
| Rives d'Andaine 2,844 · 6.4 mi | 54.6 | 31% | 10% | 3.4% |
| Bagnoles de l'Orne Normandie 2,699 · 8.8 mi | 61.9 | 45% | 54% | 7.1% |
| Mayenne 12,883 · 10.9 mi | 47 | 28% | 1.8% | 5.3% |
| Villaines-la-Juhel 2,671 · 11.9 mi | 57.5 | 38% | 3.9% | 3.3% |
| La Ferté Macé 5,071 · 12.2 mi | 53.8 | 32% | 3.2% | 6.1% |
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 Lassay-les-Châteaux
What is the population of Lassay-les-Châteaux?
2,247 at INSEE’s 2023 census, 6% fewer than in 2012 (2,390).
How old are Lassay-les-Châteaux’s residents?
The median age is 55.5, older than 95% of compared French towns. 18% are under 18 and 33% 65 or older.
How many second homes are there in Lassay-les-Châteaux?
170, with occasional dwellings: 12% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Lassay-les-Châteaux?
INSEE counts 110 immigrants (born abroad, not French at birth), 4.9% of residents, and 91 foreign nationals (4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Lassay-les-Châteaux?
€25,190 a year per consumption unit in 2023 (median of compared French towns €25,970); 12.0% 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 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.