In Boissy-l'Aillerie, 24% of households are one person living alone, fewer than in 95% of compared French towns
Set against 12% in the typical compared French town, 4.7% of households rent social housing (HLM) in Boissy-l'Aillerie. The share of households without a car stands at 6.3%. Households headed by a retired person are rarer here than in 88% of compared French towns. The town had 2,120 residents in 820 households at the 2023 census.
Throughout this page, the Val-d'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 Boissy-l'Aillerie
A town of families
34% of households are couples with children and 12% single parents with children; 20% of residents are under 15. Households ↓
A young town
Half of Boissy-l'Aillerie’s residents are under 38.7 and half over; the median of compared French towns is 44. 20% are under 15 and 15% are 65 or older. Ages ↓
Growing fast
Boissy-l'Aillerie had 1,794 residents at the 2012 census and 2,120 in 2023, up 18%: faster growth than in 88% of compared French towns. Population ↓
Many graduates
47% of residents 15 and over who have left education hold a diploma above the bac, 16% a master’s or more (bac+5). Qualifications ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
A +18% change since 2012: Boissy-l'Aillerie grew faster than 88% 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
The change was +1% from 2012 to 2017 and +17% from 2017 to 2023. The median compared French town changed +5% over the same years, the median Val-d'Oise town +8%.
Younger than 85% of compared French towns: half of Boissy-l'Aillerie is under 38.7
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Boissy-l'Aillerie 38.7. The median compared French town: 44.
The share of residents aged 15 to 24 tops just over four fifths of compared French towns: 13%. Residents aged 65 and over are rarer here than in 91% of compared French towns.
Women and men · all residents
51% women, 49% men
About 95 men for every 100 women. Median share of women: Val-d'Oise 51.5%, France 51.8%.
A higher share of couples with children than 89% of compared French towns, at 34%
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 Val-d'Oise median and the France median
Living alone · share
Compared with 10% in the typical compared French town, 12% of households are single parents here. By way of comparison, 25% of households are couples with children in the typical compared French town. There are 2.5 people in the average household.
Boissy-l'Aillerie sits below 85% of compared French towns for empty homes (4.2%)
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 16 has no car, against 11% in the median compared French town. Fewer flats than in nearly two thirds of compared French towns: 22%. The comparison figure for empty homes is 6.7% in the typical compared French town. On the census count, 1.3% of homes are second homes.
The middle resident’s standard of living: €31,680 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 Boissy-l'Aillerie’s residents live in households with a standard of living below €31,680 a year per consumption unit, and half above: higher than in 90% of compared French towns.
Households headed by a manager or professional make up 16% in Boissy-l'Aillerie, more than in 79% 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
Compared with 14% in the typical compared French town, 11% of households are headed by a manual worker here. Elsewhere, 9.4% of households are headed by a manager or professional in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
8.9% of residents are immigrants, a share 65% of compared French towns don’t reach
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.
Foreign nationals: 6.2%, above nearly two thirds of compared French towns. In the typical compared French town, 6.5% of residents are immigrants.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
A larger share of married residents than 70% of compared French towns: 46%
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
About one in four: that is how common single residents are in Boissy-l'Aillerie (26%). The wider picture: 43% of residents 15 and over are married in the typical compared French town.
In Boissy-l'Aillerie, 9.6% of adults out of school have no qualification, fewer than in 96% 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
The figure for graduates of higher education is 47% in Boissy-l'Aillerie and 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.
Among 41 French towns of 2,120 to 2,582 people, the 2nd youngest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Ages run from 37.2 in Villejust to 62.3 in Prayssac.
Every neighbor is younger than Boissy-l'Aillerie
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 Boissy-l'Aillerie
What is the population of Boissy-l'Aillerie?
2,120 at INSEE’s 2023 census, 18% more than in 2012 (1,794).
How old are Boissy-l'Aillerie’s residents?
The median age is 38.7, younger than 85% of compared French towns. 24% are under 18 and 15% 65 or older.
How many second homes are there in Boissy-l'Aillerie?
11, with occasional dwellings: 1.3% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Boissy-l'Aillerie?
INSEE counts 190 immigrants (born abroad, not French at birth), 8.9% of residents, and 130 foreign nationals (6.2%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Boissy-l'Aillerie?
€31,680 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 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.