2.1% of homes are flats, fewer than in 99% of compared French towns
The share of residents aged 15 to 24 is 7.2%, against 11% in the typical compared French town. Households headed by a manager or professional come to 29% in Avilly-Saint-Léonard, about three in ten. Compared with other places, single-parent households are scarce here: 6.9%, fewer than in 91% of compared French towns. The 2023 Census counted 852 residents in 370 households.
Throughout this page, the Oise 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 Avilly-Saint-Léonard
Fewer residents than in 2012
Avilly-Saint-Léonard had 924 residents at the 2012 census and 852 in 2023, down 8%: slower growth than in 94% of compared French towns. Population ↓
Many graduates
57% of residents 15 and over who have left education hold a diploma above the bac, 28% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
From 2012 to 2023, 94% of compared French towns grew faster than Avilly-Saint-Léonard: −8%
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
Medians for comparison: +5% across compared French towns, +2% in Oise. Here the change came as −4% to 2017, then −4% to 2023.
Older than 78% of compared French towns: half of Avilly-Saint-Léonard is over 48.8
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Avilly-Saint-Léonard 48.8. The median compared French town: 44.
Higher than in 57% of compared French towns: 23% of residents are 65 or over.
Women and men · all residents
51% women, 49% men
About 96 men for every 100 women. Median share of women: Oise 51.7%, France 51.8%.
27% of households are one person living alone, below 90% 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 Oise median and the France median
Living alone · share
28% of households are couples with children (typical compared French town: 25%). To put it in context, 35% of households are one person living alone in the typical compared French town. On average, 2.3 people share a household.
A larger share of second homes than 84% of compared French towns: 7.5%
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 without a car make up 5.3%, against 11% in the typical compared French town. 5.2% of homes stand empty, a lower share than in 72% of compared French towns. To put it in context, 2.1% of homes are second homes in the typical compared French town. Turnover: 5.9% of households moved in less than two years ago, and 25% have lived in their home 30 years or more.
Per consumption unit, the median standard of living is €37,150 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 Avilly-Saint-Léonard is €37,150 a year per consumption unit: higher than in 97% of compared French towns.
2.7% of households are headed by a manual worker, below 99% 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
Against a figure of 32% in the typical compared French town, the share of households headed by a retired person in Avilly-Saint-Léonard comes in at 37%. In the typical compared French town, households headed by a manual worker come to 14%.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Avilly-Saint-Léonard: 6.7% of residents are foreign nationals, above 68% 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 immigrants is 7.9%, against 6.5% in the typical compared French town. That is higher than in 60% of compared French towns; the median compared commune in Oise has 7.4%. Measured more widely, 4.3% of residents are foreign nationals 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.
In Avilly-Saint-Léonard, 55% of residents 15 and over are married, more than in 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
18% of residents 15 and over are single; in the typical compared French town the figure is 25%. The benchmark for married residents in the typical compared French town: 43%.
A larger share of graduates of higher education than 97% of compared French towns: 57%
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
Adults with no qualification: 10%, below 95% of compared French towns. The comparison figure for graduates of higher education is 30% in the typical compared French town.
The 15th oldest of 41 French towns of 852 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).
No nearby town is as old as Avilly-Saint-Léonard
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Avilly-Saint-Léonard | 48.8 | 23% | 7.5% | 7.9% |
| Chantilly 10,591 · 2.6 mi | 44 | 23% | 3.9% | 11% |
| Senlis 15,157 · 3 mi | 42.2 | 19% | 2.9% | 12% |
| Saint-Maximin 3,335 · 3.9 mi | 36.4 | 15% | 0.5% | 14% |
| Coye-la-Forêt 3,915 · 4.2 mi | 44.5 | 20% | 3.2% | 8.8% |
| Orry-la-Ville 3,583 · 4.3 mi | 45.1 | 22% | 2.3% | 7.4% |
| Gouvieux 8,867 · 4.5 mi | 47.9 | 25% | 4.6% | 10% |
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 Avilly-Saint-Léonard
What is the population of Avilly-Saint-Léonard?
852 at INSEE’s 2023 census, 8% fewer than in 2012 (924).
How old are Avilly-Saint-Léonard’s residents?
The median age is 48.8, older than 78% of compared French towns. 21% are under 18 and 23% 65 or older.
How many second homes are there in Avilly-Saint-Léonard?
32, with occasional dwellings: 7.5% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Avilly-Saint-Léonard?
INSEE counts 67 immigrants (born abroad, not French at birth), 7.9% of residents, and 57 foreign nationals (6.7%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Avilly-Saint-Léonard?
€37,150 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.