Photo: Pymouss · CC BY-SA 4.0In Le Plessis-Bouchard, 34% of households are couples with children, more than in 90% of compared French towns
Just over a fifth of households are headed by a manager or professional (typical compared French town: 9.4%). With a median age of 40.6, Le Plessis-Bouchard is younger than three quarters of compared French towns. At the 2023 Census Le Plessis-Bouchard was home to 8,518 people in 3,520 households. Across Le Plessis-Bouchard, 47% of homes are flats.
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 Le Plessis-Bouchard
A town of families
34% of households are couples with children and 10% single parents with children; 19% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
Le Plessis-Bouchard’s population changed by +9% since 2012, more than in 65% 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 median Val-d'Oise town changed +8% and the median compared French town +5%; here the first five years brought +7% and the next six +1%.
A smaller share of residents aged 65 and over than 81% of compared French towns: 17%
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Le Plessis-Bouchard 40.6. The median compared French town: 44.
At 11%, residents aged 15 to 24 sit close to the figure in the typical compared French town. Across the comparison, 22% of residents are 65 or over in the typical compared French town.
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Median share of women: Val-d'Oise 51.5%, France 51.8%.
Le Plessis-Bouchard ranks below 78% of compared French towns on one-person households: 30%
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
A household here holds 2.4 people on average. In the typical compared French town, one-person households come to 35%. 10% of households are single parents, a higher share than in 51% of compared French towns.
Households in social housing: 7.5%, a lower share than 74% 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 11 has no car (median compared French town: 11%). On average, 12% of households rent social housing (HLM) in the typical compared French town. Second homes: 0.9% of the total. Lower than in four fifths of compared French towns: 4.6% of homes stand empty.
A median standard of living of €32,130 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.
Per consumption unit, half of residents live on more than €32,130 a year: higher than in 91% of compared French towns. 8.0% of residents have a standard of living below 60% of France’s median.
Fewer households headed by a retired person than 80% of compared French towns: 26%
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
The share of households headed by a manual worker trails 74% of compared French towns: 10%. For comparison, 32% 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).
A higher share of immigrants than 74% of compared French towns, at 11%
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 Val-d'Oise has 16%; immigrants here make up a share higher than in nearly three quarters of compared French towns. The benchmark for immigrants in the typical compared French town: 6.5%. Put another way, about one in 14: 6.9% of residents are foreign nationals.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
Above 71% of compared French towns: 46% of residents 15 and over are married
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
Fewer single residents than in 54% of compared French towns: 25%. In the typical compared French town, 43% of residents 15 and over are married.
Le Plessis-Bouchard ranks below 90% of compared French towns on adults with no qualification: 11%
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 30% in the typical compared French town, the share of graduates of higher education in Le Plessis-Bouchard comes in at 45%. Measured more widely, 19% of adults out of school have no qualification in the typical compared French town.
41 French towns of 8,431 to 8,606 people: this is the 9th 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.
Varces-Allières-et-Risset is the youngest (35.8); Le Grau-du-Roi the oldest (62.3).
A younger town than 2 of the 6 around it: Le Plessis-Bouchard
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Le Plessis-Bouchard | 40.6 | 17% | 0.9% | 11% |
| Franconville 37,754 · 0.9 mi | 36.6 | 15% | 0.9% | 19% |
| Saint-Leu-la-Forêt 16,138 · 0.9 mi | 41.7 | 18% | 0.7% | 12% |
| Ermont 29,489 · 1.1 mi | 38.2 | 17% | 0.8% | 19% |
| Saint-Prix 7,612 · 1.2 mi | 43 | 19% | 0.8% | 13% |
| Taverny 27,593 · 1.7 mi | 39 | 16% | 2.1% | 15% |
| Montigny-lès-Cormeilles 22,457 · 1.9 mi | 34.9 | 13% | 0.7% | 24% |
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 Le Plessis-Bouchard
What is the population of Le Plessis-Bouchard?
8,518 at INSEE’s 2023 census, 9% more than in 2012 (7,840).
How old are Le Plessis-Bouchard’s residents?
The median age is 40.6, younger than 75% of compared French towns. 23% are under 18 and 17% 65 or older.
How many second homes are there in Le Plessis-Bouchard?
34, with occasional dwellings: 0.9% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Le Plessis-Bouchard?
INSEE counts 930 immigrants (born abroad, not French at birth), 11% of residents, and 580 foreign nationals (6.9%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Le Plessis-Bouchard?
€32,130 a year per consumption unit in 2023 (median of compared French towns €25,970); 8.0% 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 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.