Residents aged 15 to 24: 4.6%, a lower share than 99% of compared French towns
Flats make up 2.5%, against 30% in the typical compared French town. Lailly’s 88 households held 199 residents at the 2023 Census. Census figures put households headed by a manual worker at 33% in the town. Lower than in 97% of compared French towns: 3.5% of households have no car.
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 Lailly
One home in five is a second home
The census counted 23 second homes and occasional dwellings in Lailly, 18% of its 120 homes: higher than in 93% 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 ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Lailly ranks above 93% of compared French towns on second homes: 18%
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
With empty homes at 10%, Lailly is ahead of 82% of compared French towns on that count. Elsewhere, 2.1% of homes are second homes in the typical compared French town. Households in social housing are rarer here than in 99% of compared French towns.
−4% since 2012: slower than 84% 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
Between 2012 and 2017 the population moved −7%, then +4% to 2023.
A median age of 49.2: Lailly is older than 80% 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
■ Lailly 49.2. The median compared French town: 44.
Higher than in 56% of compared French towns: 23% of residents are 65 or over.
Women and men · all residents
47% women, 53% men
About 112 men for every 100 women. Median share of women: Yonne 52.2%, France 51.8%.
Couples with children: 28%, a higher share than 64% 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 Yonne median and the France median
Living alone · share
Single-parent households are rarer here than in 99% of compared French towns. For comparison, 25% of households are couples with children in the typical compared French town. About one in three: that is how common one-person households are in Lailly (33%).
At the median, €24,620 a year to live on
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 €24,620 a year per consumption unit and half below; the level is lower than in 65% of compared French towns.
Lailly sits below 75% of compared French towns for households headed by a retired person (28%)
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 manager or professional make up 11%, against 9.4% in the typical compared French town. Against that, 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).
Lailly ranks above 69% of compared French towns on immigrants: 9.7%
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 higher than in 69% of compared French towns. Foreign nationals make up about one in 18 here (5.6%). To put it in context, 6.5% of residents are immigrants 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.
17% of residents 15 and over are single, below 99% 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
The share of married residents trails 74% of compared French towns: 39%. Elsewhere, 25% of residents 15 and over are single in the typical compared French town.
Graduates of higher education make up 23% in Lailly, less than in 74% 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 19% in the typical compared French town, the share of adults with no qualification in Lailly comes in at 23%. The usual figure: 30% of adults out of school hold a higher-education qualification in the typical compared French town.
The 15th oldest of 41 French towns of 199 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.
The youngest is Villejust (37.2), the oldest Prayssac (62.3).
Lailly sits below 3 of its 6 closest neighbors on 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 |
|---|---|---|---|---|
| Lailly | 49.2 | 23% | 18% | 9.7% |
| Aix-Villemaur-Pâlis 3,236 · 10.1 mi | 51.4 | 31% | 9.7% | 2.8% |
| Saint-Clément 2,849 · 10.1 mi | 49.6 | 30% | 2.1% | 14% |
| Sens 27,106 · 10.7 mi | 42.1 | 23% | 2.6% | 20% |
| Paron 4,834 · 12.6 mi | 43.3 | 22% | 1.5% | 12% |
| Pont-sur-Yonne 3,391 · 14.3 mi | 45.2 | 27% | 5.9% | 9.2% |
| Villeneuve-sur-Yonne 5,135 · 15.1 mi | 49.9 | 29% | 7.5% | 6.3% |
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 Lailly
What is the population of Lailly?
199 at INSEE’s 2023 census, 4% fewer than in 2012 (207).
How old are Lailly’s residents?
The median age is 49.2, older than 80% of compared French towns. 21% are under 18 and 23% 65 or older.
How many second homes are there in Lailly?
23, with occasional dwellings: 18% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Lailly?
INSEE counts 19 immigrants (born abroad, not French at birth), 9.7% of residents, and 11 foreign nationals (5.6%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Lailly?
€24,620 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.