Jagny-sous-Bois sits below 99% of compared French towns for households without a car (2.9%)
Compared with 30% in the typical compared French town, 5.6% of homes are flats here. Jagny-sous-Bois counted 269 residents and 100 households at the 2023 Census. About one in 11: that is how common second homes are in Jagny-sous-Bois (8.9%). More households headed by a manager or professional than in 96% of compared French towns: 29%.
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 Jagny-sous-Bois
A town of families
34% of households are couples with children and 24% single parents with children; 16% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
+8% since 2012, a pace 62% of compared French towns didn’t match
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 first five years brought +3%; the six to 2023, +4%. For comparison, the median compared French town changed +5% and the median Val-d'Oise town +8%.
16% of residents are 65 or over, fewer than in 88% 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
■ Jagny-sous-Bois 44.2. The median compared French town: 44.
The share of residents aged 15 to 24 is 13%, against 11% in the typical compared French town. The median age in Jagny-sous-Bois is 44.2, higher than in 51% of compared French towns. As a yardstick, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 93 men for every 100 women. Median share of women: Val-d'Oise 51.5%, France 51.8%.
Jagny-sous-Bois ranks below 97% of compared French towns on one-person households: 24%
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
Couples with children: 34%, above 90% of compared French towns. Households average 2.7 people. On single-parent households, Jagny-sous-Bois sits higher than 99% of compared French towns: 24%. To put it in context, 35% of households are one person living alone in the typical compared French town.
8.1% of homes stand empty, a share 65% of compared French towns don’t reach
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
Recent arrivals (under two years) make up 6.8% of households; long-stayers (30 years or more) 26%. Households in social housing are rarer here than in 99% of compared French towns. The wider picture: 6.7% of homes stand empty in the typical compared French town.
Per consumption unit, the median standard of living is €32,430 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 Jagny-sous-Bois’ residents live in households with a standard of living below €32,430 a year per consumption unit, and half above: higher than in 92% of compared French towns.
33% of households are headed by a retired person, more than in 53% 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
Across Jagny-sous-Bois, 14% of households are headed by a manual worker. 29% of Jagny-sous-Bois’ households are headed by a manager or professional, against 9.4% in the median compared French town; 33% by a retired person (32%).
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
8.5% of residents are immigrants, a share 63% 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.
Here, 4.8% of residents are foreign nationals. On average, 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.
Jagny-sous-Bois: 48% of residents 15 and over are married, above 85% 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
Single residents make up 28%, against 25% in the typical compared French town. In the typical compared French town, married residents come to 43%.
Only 14% of adults out of school have no qualification in Jagny-sous-Bois
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
Compared with 30% in the typical compared French town, 39% of adults out of school hold a higher-education qualification here. Typically, 19% of adults out of school have no qualification in the typical compared French town.
16th lowest median age among 41 French towns of 269 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.
Villejust is the youngest (37.2); Prayssac the oldest (62.3).
1 in 6 nearby towns have a higher median age than Jagny-sous-Bois
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Jagny-sous-Bois | 44.2 | 16% | 8.9% | 8.5% |
| Luzarches 5,008 · 2.6 mi | 40.7 | 17% | 1.9% | 9% |
| Puiseux-en-France 3,765 · 3 mi | 38.7 | 14% | 0.6% | 14% |
| Marly-la-Ville 6,022 · 3 mi | 38.6 | 15% | 1% | 12% |
| Chaumontel 3,332 · 3.2 mi | 44.8 | 21% | 2% | 9.9% |
| Fosses 10,570 · 3.4 mi | 36.1 | 13% | 0.8% | 21% |
| Goussainville 31,301 · 3.4 mi | 34.4 | 12% | 3.3% | 34% |
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 Jagny-sous-Bois
What is the population of Jagny-sous-Bois?
269 at INSEE’s 2023 census, 8% more than in 2012 (250).
How old are Jagny-sous-Bois’ residents?
The median age is 44.2, older than 51% of compared French towns. 20% are under 18 and 16% 65 or older.
How many second homes are there in Jagny-sous-Bois?
11, with occasional dwellings: 8.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Jagny-sous-Bois?
INSEE counts 23 immigrants (born abroad, not French at birth), 8.5% of residents, and 13 foreign nationals (4.8%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Jagny-sous-Bois?
€32,430 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.